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ASN lookup
Find out who announces an IP address or range. Search by AS number, by IPv4 or IPv6 address, or by network name: the answer comes from the public global routing table, refreshed daily.
An AS number says who announces an address, not whether that address is risky. Maskbreak deliberately keeps routing data out of its risk score — see any AS page for why. New to AS numbers? What an ASN is, and how to find the ASN of an IP address.
ASN Directory: the largest networks
Every autonomous system that announces significant IPv4 space or sells infrastructure — 6,784 of them. Showing the 500 largest by announced address space.
AS749
DNIC-AS-00749 - United States Department of Defense (DoD)
222M addresses · 1,879 ranges · US
AS16509
AMAZON-02 - Amazon.com, Inc.
157.4M addresses · 4,560 ranges · US
AS4134
CHINANET-BACKBONE - No.31,Jin-rong Street
99M addresses · 3,453 ranges · CN
AS7018
ATT-INTERNET4 - AT&T Enterprises, LLC
90M addresses · 1,986 ranges · US
AS8075
MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
80.7M addresses · 934 ranges · US
AS4837
CHINA169-Backbone - CHINA UNICOM China169 Backbone
57.2M addresses · 1,096 ranges · CN
AS4766
KIXS-AS-KR-KR - Korea Telecom
46.4M addresses · 1,830 ranges · KR
AS7922
COMCAST-7922 - Comcast Cable Communications, LLC
42.2M addresses · 1,528 ranges · US
AS701
UUNET - Verizon Business
40.6M addresses · 1,349 ranges · US
AS17676
GIGAINFRA - SoftBank Corp.
38.4M addresses · 102 ranges · JP
AS3320
DTAG Deutsche Telekom AG
34.2M addresses · 720 ranges · DE
AS721
DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD)
29.5M addresses · 2,291 ranges · US
AS4713
OCN - NTT DOCOMO BUSINESS,Inc.
28.6M addresses · 125 ranges · JP
AS3356
LEVEL3 - Level 3 Parent, LLC
27.4M addresses · 2,030 ranges · US
AS174
COGENT-174 - Cogent Communications, LLC
24.7M addresses · 5,163 ranges · US
AS396982
GOOGLE-CLOUD-PLATFORM - Google LLC
22M addresses · 561 ranges · US
AS14618
AMAZON-AES - Amazon.com, Inc.
21.6M addresses · 994 ranges · US
AS3215
AS3215 Orange S.A.
20.1M addresses · 252 ranges · FR
AS3269
ASN-IBSNAZ Telecom Italia S.p.A.
19.7M addresses · 127 ranges · IT
AS6167
CELLCO-PART - Verizon Business
18.1M addresses · 236 ranges · US
AS2516
KDDI - KDDI CORPORATION
18.1M addresses · 288 ranges · JP
AS9808
CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd.
17.3M addresses · 2,776 ranges · CN
AS714
APPLE-ENGINEERING - Apple Inc.
16.9M addresses · 384 ranges · US
AS31399
DAIMLER-AS Mercedes-Benz Group AG
16.8M addresses · 8 ranges · DE
AS4538
ERX-CERNET-BKB - China Education and Research Network Center
16.4M addresses · 878 ranges · CN
AS15557
LDCOMNET Societe Francaise Du Radiotelephone - SFR SA
15.8M addresses · 123 ranges · FR
AS209
CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC
15.7M addresses · 1,793 ranges · US
AS9318
SKB-AS-KR - SK Broadband Co Ltd
15M addresses · 804 ranges · KR
AS2856
BT-UK-AS British Telecommunications Limited
13.9M addresses · 423 ranges · GB
AS8151
AS8151 - UNINET
13.5M addresses · 883 ranges · MX
AS1221
ASN-TELSTRA - Telstra Limited
13.4M addresses · 191 ranges · AU
AS21928
T-MOBILE-AS21928 - T-Mobile USA, Inc.
13.1M addresses · 53 ranges · US
AS22773
ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc.
12.9M addresses · 1,188 ranges · US
AS3209
VODANET Vodafone GmbH
12.8M addresses · 168 ranges · DE
AS20115
CHARTER-20115 - Charter Communications LLC
12.4M addresses · 503 ranges · US
AS22394
CELLCO - Verizon Business
12.3M addresses · 256 ranges · US
AS3462
HINET - Data Communication Business Group
12.2M addresses · 78 ranges · TW
AS7377
UCSD - University of California, San Diego
12.1M addresses · 251 ranges · US
AS26599
AS26599 - TELEFONICA BRASIL S.A
10.8M addresses · 173 ranges · BR
AS5650
FRONTIER-FRTR - Frontier Communications of America, Inc.
10.7M addresses · 755 ranges · US
AS7029
WINDSTREAM - Windstream Communications LLC
10.4M addresses · 1,147 ranges · US
AS3352
Telefonica_de_EspaNa TELEFONICA DE ESPANA S.A.U.
10.4M addresses · 134 ranges · ES
AS17858
POWERVIS-AS-KR-KR - LG POWERCOMM
10.3M addresses · 52 ranges · KR
AS28573
AS28573 - Claro NXT Telecomunicacoes Ltda
10M addresses · 198 ranges · BR
AS37963
ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd.
9.4M addresses · 124 ranges · CN
AS12389
ROSTELECOM-AS PJSC Rostelecom
9.2M addresses · 1,068 ranges · RU
AS26615
AS26615 - TIM S/A
8.9M addresses · 245 ranges · BR
AS12322
PROXAD Free SAS
8.8M addresses · 16 ranges · FR
AS2907
SINET-AS - Research Organization of Information and Systems, National Institute of Informatics
8.8M addresses · 410 ranges · JP
AS5089
NTL Virgin Media Limited
8.5M addresses · 82 ranges · GB
AS7303
AS7303 - Telecom Argentina S.A.
8.4M addresses · 147 ranges · AR
AS6805
TDDE-ASN1 Telefonica Germany GmbH & Co.OHG
8.4M addresses · 33 ranges · DE
AS20940
AKAMAI-ASN1 Akamai International B.V.
8.2M addresses · 2,329 ranges · NL
AS3786
LGDACOM-KR - LG DACOM Corporation
8.1M addresses · 964 ranges · KR
AS4812
CHINANET-SH-AP - China Telecom (Group)
7.9M addresses · 345 ranges · CN
AS56
DNIC-AS-00056 - United States Department of Defense (DoD)
7.8M addresses · 318 ranges · US
AS680
DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
7.7M addresses · 247 ranges · DE
AS45899
VNPT-AS-VN - VNPT Corp
7.6M addresses · 398 ranges · VN
AS8452
TE-AS - IDDQD-AS
7.6M addresses · 114 ranges · EG
AS1540
DNIC-ASBLK-01534-01546 - Headquarters, USAISC
7.4M addresses · 663 ranges · US
AS10796
TWC-10796-MIDWEST - Charter Communications Inc
7.4M addresses · 333 ranges · US
AS1267
ASN-WINDTRE WIND TRE S.P.A.
7.4M addresses · 49 ranges · IT
AS1136
KPN KPN B.V.
7.3M addresses · 199 ranges · NL
AS20001
TWC-20001-PACWEST - Charter Communications Inc
7.2M addresses · 387 ranges · US
AS1103
SURFNET-NL SURF B.V.
7.2M addresses · 72 ranges · NL
AS4808
CHINA169-BJ - China Unicom Beijing Province Network
7.2M addresses · 407 ranges · CN
AS9644
SKTELECOM-NET-AS-KR - SK Telecom
7.1M addresses · 39 ranges · KR
AS5410
BOUYGTEL-ISP Bouygues Telecom SA
7.1M addresses · 20 ranges · FR
AS12479
UNI2-AS Orange Espagne SA
7M addresses · 1,077 ranges · ES
AS786
JANET Jisc Services Limited
6.9M addresses · 169 ranges · GB
AS577
BACOM - Bell Canada
6.9M addresses · 518 ranges · CA
AS9121
TTNet Turk Telekomunikasyon Anonim Sirketi
6.7M addresses · 210 ranges · TR
AS33915
TNF-AS Vodafone Libertel B.V.
6.6M addresses · 121 ranges · NL
AS2828
XO-AS15 - Verizon Business
6.5M addresses · 302 ranges · US
AS3301
TELIANET-SWEDEN Telia Company AB
6.5M addresses · 232 ranges · SE
AS1257
SWIPNET - Tele2 Sverige AB
6.5M addresses · 298 ranges · EU
AS3561
CENTURYLINK-LEGACY-SAVVIS - CenturyLink Communications, LLC
6.4M addresses · 615 ranges · US
AS36992
ETISALAT MISR - ETISALAT MISR
6.3M addresses · 264 ranges · EG
AS45090
TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited
6.2M addresses · 103 ranges · CN
AS9829
BSNL-NIB - National Internet Backbone
6.2M addresses · 165 ranges · IN
AS5607
BSKYB-BROADBAND-AS Sky UK Limited
6.1M addresses · 20 ranges · GB
AS6713
Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM - Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM
5.9M addresses · 122 ranges · MA
AS11427
TWC-11427-TEXAS - Charter Communications Inc
5.8M addresses · 300 ranges · US
AS31898
ORACLE-BMC-31898 - Oracle Corporation
5.8M addresses · 794 ranges · US
AS812
ROGERS-COMMUNICATIONS - Rogers Communications Canada Inc.
5.8M addresses · 372 ranges · CA
AS702
UUNET - Verizon Business
5.7M addresses · 311 ranges · US
AS33363
BHN-33363 - Charter Communications, Inc
5.7M addresses · 175 ranges · US
AS30722
VODAFONE-IT-ASN Fastweb SpA
5.6M addresses · 75 ranges · IT
AS45102
ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd.
5.6M addresses · 181 ranges · CN
AS1659
ERX-TANET-ASN1 - Taiwan Academic Network (TANet) Information Center
5.5M addresses · 42 ranges · TW
AS5617
TPNET Orange Polska Spolka Akcyjna
5.5M addresses · 68 ranges · PL
AS17506
UCOM - ARTERIA Networks Corporation
5.4M addresses · 26 ranges · JP
AS6327
SHAW - Shaw Communications
5.3M addresses · 176 ranges · CA
AS4804
MPX-AS - Microplex PTY LTD
5.3M addresses · 50 ranges · AU
AS3292
TDC TDC Holding A/S
5.2M addresses · 112 ranges · DK
AS4230
AS4230 - CLARO S.A.
5.2M addresses · 31 ranges · BR
AS7552
VIETEL-AS-AP - Viettel Group
5M addresses · 345 ranges · VN
AS6128
CABLE-NET-1 - Cablevision Systems Corp.
4.9M addresses · 334 ranges · US
AS2914
NTT-DATA-2914 - NTT America, Inc.
4.8M addresses · 1,509 ranges · US
AS852
ASN852 - TELUS Communications Inc.
4.8M addresses · 530 ranges · CA
AS9824
JTCL-JP-AS - JCOM Co., Ltd.
4.7M addresses · 20 ranges · JP
AS6079
RCN-AS - RCN
4.7M addresses · 1,296 ranges · US
AS16276
OVH OVH SAS
4.7M addresses · 622 ranges · FR
AS27699
AS27699 - TELEFONICA BRASIL S.A
4.6M addresses · 79 ranges · BR
AS18881
AS18881 - TELEFONICA BRASIL S.A
4.6M addresses · 168 ranges · BR
AS3549
LVLT-3549 - Level 3 Parent, LLC
4.5M addresses · 1,320 ranges · US
AS37069
The Egyptian Company for Mobile Services (Mobinil) - The Egyptian Company for Mobile Services (Mobinil)
4.5M addresses · 11 ranges · EG
AS306
DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)
4.5M addresses · 143 ranges · US
AS26611
AS26611 - COMUNICACION CELULAR S.A. COMCEL S.A.
4.5M addresses · 32 ranges · CO
AS25019
SAUDINETSTC-AS Saudi Telecom Company JSC
4.4M addresses · 344 ranges · SA
AS11426
TWC-11426-CAROLINAS - Charter Communications Inc
4.4M addresses · 194 ranges · US
AS11351
TWC-11351-NORTHEAST - Charter Communications Inc
4.3M addresses · 110 ranges · US
AS36947
Telecom Algeria - Telecom Algeria
4.3M addresses · 37 ranges · DZ
AS7713
telkomnet-as-ap - PT Telekomunikasi Indonesia
4.3M addresses · 648 ranges · ID
AS2119
TELENOR-NORGE-AS Telenor Norge AS
4.2M addresses · 83 ranges · NO
AS6389
BELLSOUTH-NET-BLK - AT&T Enterprises, LLC
4.2M addresses · 161 ranges · US
AS13489
AS13489 - UNE EPM TELECOMUNICACIONES S.A.
4.2M addresses · 54 ranges · CO
AS55836
RELIANCEJIO-IN - Reliance Jio Infocomm Limited
4.2M addresses · 238 ranges · IN
AS16625
AKAMAI-AS - Akamai Technologies, Inc.
4.1M addresses · 1,070 ranges · US
AS3257
GTT-BACKBONE GTT Communications Inc.
4.1M addresses · 2,684 ranges · US
AS2497
IIJ - Internet Initiative Japan Inc.
4.1M addresses · 174 ranges · JP
AS11003
PANDG - The Procter and Gamble Company
4.1M addresses · 45 ranges · US
AS22927
AS22927 - Telefonica de Argentina
4M addresses · 110 ranges · AR
AS20057
ATT-MOBILITY-LLC-AS20057 - AT&T Enterprises, LLC
4M addresses · 374 ranges · US
AS13285
OPALTELECOM-AS TalkTalk Communications Limited
4M addresses · 45 ranges · GB
AS5432
PROXIMUS-ISP-AS Proximus NV
3.9M addresses · 38 ranges · BE
AS2527
So-net - Sony Network Communications Inc.
3.9M addresses · 71 ranges · JP
AS17557
PKTELECOM-AS-PK - Pakistan Telecommunication Company Limited
3.7M addresses · 209 ranges · PK
AS719
ELISA-AS Elisa Oyj
3.7M addresses · 123 ranges · FI
AS2518
BIGLOBE - BIGLOBE Inc.
3.7M addresses · 26 ranges · JP
AS12430
VODAFONE_ES VODAFONE ESPANA S.A.U.
3.7M addresses · 55 ranges · ES
AS36351
SOFTLAYER - IBM Cloud
3.6M addresses · 214 ranges · US
AS56046
CMNET-Jiangsu-AP - China Mobile communications corporation
3.6M addresses · 740 ranges · CN
AS4847
CNIX-AP - China Networks Inter-Exchange
3.6M addresses · 421 ranges · CN
AS12874
FASTWEB Fastweb SpA
3.6M addresses · 62 ranges · IT
AS3303
SWISSCOM Swisscom (Schweiz) AG
3.5M addresses · 247 ranges · CH
AS45609
BHARTI-MOBILITY-AS-AP - Bharti Airtel Ltd. AS for GPRS Service
3.4M addresses · 208 ranges · IN
AS4249
LILLY-AS - Eli Lilly and Company
3.3M addresses · 70 ranges · US
AS1759
TSF-IP-Core Telia Finland Oyj
3.3M addresses · 94 ranges · FI
AS4788
TTSSB-MY - TM TECHNOLOGY SERVICES SDN. BHD.
3.2M addresses · 64 ranges · MY
AS24940
HETZNER-AS Hetzner Online GmbH
3.2M addresses · 83 ranges · DE
AS58224
TCI Iran Telecommunication Company PJS
3.2M addresses · 312 ranges · IR
AS14061
DIGITALOCEAN-ASN - DigitalOcean, LLC
3.2M addresses · 104 ranges · US
AS4155
USDA-1 - USDA
3.1M addresses · 19 ranges · US
AS33491
COMCAST-33491 - Comcast Cable Communications, LLC
3.1M addresses · 305 ranges · US
AS3816
AS3816 - COLOMBIA TELECOMUNICACIONES S.A. ESP BIC
3.1M addresses · 211 ranges · CO
AS7545
TPG-INTERNET-AP - TPG Telecom Limited
3.1M addresses · 1,195 ranges · AU
AS19901
BRIGHTSPEED - Brightspeed
3M addresses · 312 ranges · US
AS17511
OPTAGE - OPTAGE Inc.
3M addresses · 56 ranges · JP
AS56041
CMNET-Zhejiang-AP - China Mobile communications corporation
3M addresses · 344 ranges · CN
AS9299
IPG-AS-AP - Philippine Long Distance Telephone Company
3M addresses · 94 ranges · PH
AS12271
TWC-12271-NYC - Charter Communications Inc
2.9M addresses · 97 ranges · US
AS19108
SUDDENLINK-COMMUNICATIONS - Optimum
2.8M addresses · 311 ranges · US
AS5769
VIDEOTRON - Videotron Ltee
2.8M addresses · 125 ranges · CA
AS137
ASGARR Consortium GARR
2.8M addresses · 62 ranges · IT
AS1761
TDIR-CAPNET - General Services Commission
2.8M addresses · 18 ranges · US
AS8447
A1TELEKOM-AT A1 Telekom Austria AG
2.7M addresses · 130 ranges · AT
AS35819
Mobily-AS Etihad Etisalat, a joint stock company
2.7M addresses · 75 ranges · SA
AS9394
CTTNET - China TieTong Telecommunications Corporation
2.7M addresses · 35 ranges · CN
AS17816
CHINA169-GZ - China Unicom IP network China169 Guangdong province
2.7M addresses · 200 ranges · CN
AS8434
TELENOR-SE Telenor Sverige AB
2.6M addresses · 75 ranges · SE
AS2200
FR-RENATER - Renater
2.6M addresses · 99 ranges · FR
AS668
DNIC-AS-00668 - United States Department of Defense (DoD)
2.5M addresses · 128 ranges · US
AS9605
docomo - NTT DOCOMO, INC.
2.5M addresses · 134 ranges · JP
AS5378
Vodafone Limited
2.5M addresses · 9 ranges · GB
AS8048
AS8048 - CANTV Servicios, Venezuela
2.5M addresses · 97 ranges · VE
AS36903
Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM - Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM
2.5M addresses · 48 ranges · MA
AS16637
MTN SA - MTN SA
2.5M addresses · 81 ranges · ZA
AS37693
OOREDOO TUNISIE SA - OOREDOO TUNISIE SA
2.5M addresses · 28 ranges · TN
AS5384
EMIRATES-INTERNET EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
2.4M addresses · 325 ranges · AE
AS36925
MEDITELECOM - MEDITELECOM
2.4M addresses · 28 ranges · MA
AS7418
AS7418 - TELEFONICA CHILE S.A.
2.4M addresses · 69 ranges · CL
AS3741
Dimension Data - Dimension Data
2.3M addresses · 311 ranges · ZA
AS9158
TELENOR_DANMARK_AS Telenor A/S
2.3M addresses · 24 ranges · DK
AS6848
TELENET-AS Telenet BV
2.3M addresses · 64 ranges · BE
AS197207
MCCI-AS Mobile Communication Company of Iran PLC
2.3M addresses · 107 ranges · IR
AS11404
AS-WAVE-1 - Wave Broadband
2.3M addresses · 455 ranges · US
AS33651
CMCS - Comcast Cable Communications, LLC
2.3M addresses · 181 ranges · US
AS8167
AS8167 - V tal
2.2M addresses · 407 ranges · BR
AS16591
GOOGLE-FIBER - Google Fiber Inc.
2.2M addresses · 18 ranges · US
AS237
MERIT-AS-14 - Merit Network Inc.
2.2M addresses · 54 ranges · US
AS559
Switch SWITCH
2.2M addresses · 77 ranges · CH
AS24560
AIRTELBROADBAND-AS-AP - Bharti Airtel Ltd., Telemedia Services
2.2M addresses · 539 ranges · IN
AS132203
TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue
2.2M addresses · 175 ranges · CN
AS6057
AS6057 - Administracion Nacional de Telecomunicaciones
2.2M addresses · 19 ranges · UY
AS23724
CHINANET-IDC-BJ-AP - IDC, China Telecommunications Corporation
2.2M addresses · 357 ranges · CN
AS12400
PARTNER-AS Partner Communications Ltd.
2.1M addresses · 48 ranges · IL
AS9498
BBIL-AP - BHARTI Airtel Ltd.
2.1M addresses · 956 ranges · IN
AS553
BELWUE Universitaet Stuttgart
2.1M addresses · 60 ranges · DE
AS6871
Plusnet British Telecommunications Limited
2.1M addresses · 48 ranges · GB
AS1273
CW - IDDQD-AS
2.1M addresses · 169 ranges · EU
AS2514
InfoSphere - NTT PC Communications, Inc.
2.1M addresses · 210 ranges · JP
AS6730
SUNRISE Sunrise GmbH
2M addresses · 95 ranges · CH
AS6799
OTENET-GR Ote SA (Hellenic Telecommunications Organisation)
2M addresses · 48 ranges · GR
AS56045
CMNET-Jiangxi-AP - China Mobile communications corporation
2M addresses · 240 ranges · CN
AS81
NCREN - MCNC
2M addresses · 69 ranges · US
AS13999
AS13999 - Mega Cable, S.A. de C.V.
2M addresses · 452 ranges · MX
AS10013
FBDC - FreeBit Co.,Ltd.
1.9M addresses · 145 ranges · JP
AS37492
Orange Tunisie - Orange Tunisie
1.9M addresses · 51 ranges · TN
AS24445
CMNET-V4henan-AS-AP - Henan Mobile Communications Co.,Ltd
1.9M addresses · 246 ranges · CN
AS50266
Odido Odido Netherlands B.V.
1.9M addresses · 26 ranges · NL
AS4725
ODN - SoftBank Corp.
1.9M addresses · 106 ranges · JP
AS2152
CENIC-2152 - CENIC
1.9M addresses · 524 ranges · US
AS16086
DNA DNA Oyj
1.9M addresses · 69 ranges · FI
AS5972
DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)
1.9M addresses · 209 ranges · US
AS270
AS270 - National Aeronautics and Space Administration
1.9M addresses · 79 ranges · US
AS33668
CMCS - Comcast Cable Communications, LLC
1.9M addresses · 175 ranges · US
AS24444
CMNET-V4shandong-AS-AP - Shandong Mobile Communication Company Limited
1.8M addresses · 269 ranges · CN
AS1213
Asiera ASIERA TECHNOLOGY SERVICES CLG
1.8M addresses · 17 ranges · IE
AS3
MIT-GATEWAYS - Massachusetts Institute of Technology
1.8M addresses · 28 ranges · US
AS3243
MEO-RESIDENCIAL MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.
1.8M addresses · 16 ranges · PT
AS9674
FET-TW - Far EastTone Telecommunication Co., Ltd.
1.8M addresses · 31 ranges · TW
AS4760
HKTIMS-AP - HKT Limited
1.8M addresses · 207 ranges · HK
AS8881
VERSATEL 1&1 Versatel GmbH
1.8M addresses · 348 ranges · DE
AS10620
AS10620 - Telmex Colombia S.A.
1.8M addresses · 473 ranges · CO
AS4181
TDS-AS - TDS TELECOM
1.8M addresses · 164 ranges · US
AS2116
GlobalConnect-AS2116 GLOBALCONNECT AS
1.8M addresses · 127 ranges · NO
AS6739
ONO-AS VODAFONE ONO, S.A.
1.8M addresses · 77 ranges · ES
AS9304
HUTCHISON-AS-AP - HGC Global Communications Limited
1.8M addresses · 764 ranges · HK
AS9812
CNNIC-CN-COLNET - Oriental Cable Network Co., Ltd.
1.8M addresses · 28 ranges · CN
AS8708
DIGI-RO DIGI ROMANIA S.A.
1.8M addresses · 121 ranges · RO
AS16232
ASN-TIM Telecom Italia S.p.A.
1.8M addresses · 9 ranges · IT
AS1101
IP-EEND-AS SURF B.V.
1.8M addresses · 12 ranges · NL
AS2860
NOS_COMUNICACOES NOS COMUNICACOES, S.A.
1.8M addresses · 49 ranges · PT
AS8402
CORBINA-AS PJSC "Vimpelcom"
1.8M addresses · 127 ranges · RU
AS36935
Vodafone Data - Vodafone Data
1.8M addresses · 104 ranges · EG
AS33652
CMCS - Comcast Cable Communications, LLC
1.8M addresses · 161 ranges · US
AS33771
Safaricom Limited - Safaricom Limited
1.8M addresses · 27 ranges · KE
AS29975
Vodacom - Vodacom
1.7M addresses · 22 ranges · ZA
AS24835
Vodafone Data - Vodafone Data
1.7M addresses · 106 ranges · EG
AS20214
COMCAST-20214 - Comcast Cable Communications, LLC
1.7M addresses · 184 ranges · US
AS37168
Cell C (Pty) Ltd - Cell C (Pty) Ltd
1.7M addresses · 7 ranges · ZA
AS4755
TATACOMM-AS - TATA Communications formerly VSNL is Leading ISP
1.7M addresses · 591 ranges · IN
AS16135
TURKCELL-AS TURKCELL ILETISIM HIZMETLERI A.S.
1.7M addresses · 58 ranges · TR
AS6306
AS6306 - TELEFONICA VENEZOLANA, C.A.
1.7M addresses · 22 ranges · VE
AS17421
EMOME-NET - Mobile Business Group
1.7M addresses · 34 ranges · TW
AS10429
AS10429 - TELEFONICA BRASIL S.A
1.6M addresses · 60 ranges · BR
AS5483
MAGYAR-TELEKOM-MAIN-AS Magyar Telekom Plc.
1.6M addresses · 131 ranges · HU
AS4780
SEEDNET - Digital United Inc.
1.6M addresses · 527 ranges · TW
AS9141
AS9141 P4 Sp. z o.o.
1.6M addresses · 27 ranges · PL
AS55990
HWCSNET - Huawei Cloud Service data center
1.6M addresses · 65 ranges · CN
AS6461
ZAYO-6461 - Zayo Bandwidth
1.6M addresses · 527 ranges · US
AS7385
ABUL-14-7385 - Allstream Business US, LLC
1.6M addresses · 162 ranges · US
AS27064
DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD)
1.6M addresses · 579 ranges · US
AS24863
Link Egypt (Link.NET) - Link Egypt (Link.NET)
1.6M addresses · 176 ranges · EG
AS9009
M247 M247 Europe SRL
1.6M addresses · 2,250 ranges · RO
AS23693
TELKOMSEL-ASN-ID - PT. Telekomunikasi Selular
1.6M addresses · 86 ranges · ID
AS22085
AS22085 - Claro S/A
1.6M addresses · 10 ranges · BR
AS7016
CCCH-3 - Comcast Cable Communications, LLC
1.6M addresses · 184 ranges · US
AS37457
Telkom SA Ltd. - Telkom SA Ltd.
1.6M addresses · 180 ranges · ZA
AS1680
NV-ASN - Cellcom Fixed Line Communication L.P
1.6M addresses · 48 ranges · IL
AS25400
TELIA-NORWAY-AS Telia Norge AS
1.6M addresses · 79 ranges · NO
AS22047
AS22047 - VTR BANDA ANCHA S.A.
1.6M addresses · 20 ranges · CL
AS8412
TMA T-Mobile Austria GmbH
1.6M addresses · 60 ranges · AT
AS33657
CMCS - Comcast Cable Communications, LLC
1.6M addresses · 173 ranges · US
AS5610
O2-CZECH-REPUBLIC O2 Czech Republic, a.s.
1.5M addresses · 46 ranges · CZ
AS8359
MTS MTS PJSC
1.5M addresses · 268 ranges · RU
AS9269
HKBN-AS-AP - Hong Kong Broadband Network Ltd.
1.5M addresses · 146 ranges · HK
AS6147
AS6147 - INTEGRATEL PERU S.A.A.
1.5M addresses · 555 ranges · PE
AS9595
XEPHION - NTT-ME Corporation
1.5M addresses · 29 ranges · JP
AS9924
TFN-TW - Taiwan Fixed Network, Telco and Network Service Provider.
1.5M addresses · 179 ranges · TW
AS140292
CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK - CHINATELECOM Jiangsu province Suzhou 5G network
1.5M addresses · 1,105 ranges · CN
AS2510
INFOWEB - FUJITSU LIMITED
1.5M addresses · 94 ranges · JP
AS34984
TELLCOM-AS Superonline Iletisim Hizmetleri A.S.
1.5M addresses · 436 ranges · TR
AS18126
CTCX - Chubu Telecommunications Company, Inc.
1.5M addresses · 35 ranges · JP
AS10695
WAL-MART - Wal-Mart Stores, Inc.
1.5M addresses · 39 ranges · US
AS3479
PEACHNET-AS3479 - Board of Regents of the University System of Georgia
1.5M addresses · 16 ranges · US
AS10010
TOKAI - TOKAI Communications Corporation
1.5M addresses · 103 ranges · JP
AS8220
COLT COLT Technology Services Group Limited
1.5M addresses · 146 ranges · GB
AS15830
Equinix Equinix (EMEA) Acquisition Enterprises B.V.
1.5M addresses · 592 ranges · NL
AS20473
AS-VULTR - The Constant Company, LLC
1.5M addresses · 654 ranges · US
AS9198
KAZTELECOM-AS JSC Kazakhtelecom
1.5M addresses · 192 ranges · KZ
AS11830
AS11830 - Instituto Costarricense de Electricidad y Telecom.
1.5M addresses · 451 ranges · CR
AS7725
COMCAST-7725 - Comcast Cable Communications, LLC
1.5M addresses · 248 ranges · US
AS9050
RTD Orange Romania S.A.
1.5M addresses · 45 ranges · RO
AS2519
VECTANT - ARTERIA Networks Corporation
1.5M addresses · 116 ranges · JP
AS30036
MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp
1.5M addresses · 203 ranges · US
AS5713
Telkom SA Ltd. - Telkom SA Ltd.
1.5M addresses · 120 ranges · ZA
AS36926
Airtel Networks Kenya Limited - Airtel Networks Kenya Limited
1.4M addresses · 16 ranges · KE
AS210
WEST-NET-WEST - Utah Education Network
1.4M addresses · 20 ranges · US
AS18403
FPT-VN - FPT Telecom Company
1.4M addresses · 276 ranges · VN
AS13335
CLOUDFLARENET - Cloudflare, Inc.
1.4M addresses · 707 ranges · US
AS15169
GOOGLE - Google LLC
1.4M addresses · 160 ranges · US
AS17552
TRUEONLINE-AS-AP - True Online
1.4M addresses · 70 ranges · TH
AS36884
Wana Corporate - Wana Corporate
1.4M addresses · 22 ranges · MA
AS197
RAYTHEON-AS-2 - Raytheon Company
1.4M addresses · 34 ranges · US
AS766
RedIRIS Entidad Publica Empresarial Red.es
1.4M addresses · 25 ranges · ES
AS2686
ATGS-MMD-AS - AT&T Enterprises, LLC
1.4M addresses · 122 ranges · US
AS63949
AKAMAI-LINODE-AP - Akamai Connected Cloud
1.4M addresses · 80 ranges · SG
AS47583
AS-HOSTINGER Hostinger International Limited
1.4M addresses · 370 ranges · CY
AS7738
AS7738 - V tal
1.3M addresses · 113 ranges · BR
AS51207
FREEM Free Mobile SAS
1.3M addresses · 4 ranges · FR
AS33287
COMCAST-33287 - Comcast Cable Communications, LLC
1.3M addresses · 152 ranges · US
AS8987
GOVCLOUD - Amazon
1.3M addresses · 85 ranges · US
AS327934
SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom) - SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)
1.3M addresses · 31 ranges · TN
AS4685
ASAHI-NET - Asahi Net
1.3M addresses · 53 ranges · JP
AS51964
ORANGE-BUSINESS-SERVICES-IPSN-ASN ORANGE BUSINESS SERVICES U.S. Inc.
1.3M addresses · 139 ranges · US
AS39891
ALJAWWALSTC-AS Saudi Telecom Company JSC
1.3M addresses · 68 ranges · SA
AS137266
CHINATELECOM-HUBEI-WUHAN-5G-NETWORK - CHINATELECOM Hubei province Wuhan 5G network
1.3M addresses · 109 ranges · CN
AS11492
CABLEONE - CABLE ONE, INC.
1.3M addresses · 465 ranges · US
AS6503
AS6503 - Axtel, S.A.B. de C.V.
1.3M addresses · 321 ranges · MX
AS12091
MTN SA - MTN SA
1.2M addresses · 17 ranges · ZA
AS44244
IranCell-AS Iran Cell Service and Communication Company
1.2M addresses · 11 ranges · IR
AS4637
ASN-TELSTRA-GLOBAL - Telstra Global
1.2M addresses · 340 ranges · HK
AS5619
NO-TTSN-ASN1 Tieto Norway AS
1.2M addresses · 14 ranges · NO
AS7459
GRANDECOM-AS1 - Grande Communications Networks, LLC
1.2M addresses · 255 ranges · US
AS22561
CENTURYLINK-LEGACY-LIGHTCORE - CenturyLink Communications, LLC
1.2M addresses · 194 ranges · US
AS12741
AS-NETIA Netia SA
1.2M addresses · 164 ranges · PL
AS9416
MULTIMEDIA-AS-AP - Hoshin Multimedia Center Inc.
1.2M addresses · 33 ranges · TW
AS16019
VODAFONE-CZ-AS Vodafone Czech Republic a.s.
1.2M addresses · 46 ranges · CZ
AS12353
VODAFONE-PT Vodafone Portugal - Communicacoes Pessoais S.A.
1.2M addresses · 26 ranges · PT
AS6830
LibertyGlobal Liberty Global Europe Holding B.V.
1.2M addresses · 107 ranges · NL
AS4010
DNIC-AS-04010 - Headquarters, USAISC
1.2M addresses · 11 ranges · US
AS378
MACHBA-AS IUCC - Israel InterUniversity Computation Center
1.2M addresses · 39 ranges · IL
AS9617
ZAQ - JCOM Co., Ltd.
1.2M addresses · 17 ranges · JP
AS15802
DU-AS1 Emirates Integrated Telecommunications Company PJSC
1.2M addresses · 18 ranges · AE
AS3371
MCI-ASN - Verizon Business
1.2M addresses · 69 ranges · US
AS12714
MEGAFON-AS PJSC MegaFon
1.2M addresses · 196 ranges · RU
AS72
SCHLUMBERGER-AS - Schlumberger Limited
1.2M addresses · 67 ranges · US
AS23969
TOT-NET - TOT Public Company Limited
1.2M addresses · 186 ranges · TH
AS6619
SAMSUNGSDS-AS-KR-KR - SamsungSDS Inc.
1.2M addresses · 86 ranges · KR
AS2018
Tertiary Education and Research Network of South Africa - Tertiary Education and Research Network of South Africa
1.1M addresses · 145 ranges · ZA
AS33659
CMCS - Comcast Cable Communications, LLC
1.1M addresses · 126 ranges · US
AS136907
HWCLOUDS-AS-AP - HUAWEI CLOUDS
1.1M addresses · 138 ranges · HK
AS9443
VOCUS-RETAIL-AU - Vocus Retail
1.1M addresses · 42 ranges · AU
AS7155
VIASAT-SP-BACKBONE - ViaSat,Inc.
1.1M addresses · 111 ranges · US
AS109
CISCOSYSTEMS - CISCO SYSTEMS, INC.
1.1M addresses · 30 ranges · US
AS7575
AARNET-AS-AP - Australian Academic and Research Network (AARNet)
1.1M addresses · 125 ranges · AU
AS3329
HOL-GR Vodafone-panafon Hellenic Telecommunications Company SA
1.1M addresses · 96 ranges · GR
AS56048
CMNET-BEIJING-AP - China Mobile Communicaitons Corporation
1.1M addresses · 235 ranges · CN
AS11664
AS11664 - Techtel LMDS Comunicaciones Interactivas S.A.
1.1M addresses · 206 ranges · AR
AS5391
T-HT Hrvatski Telekom d.d.
1.1M addresses · 27 ranges · HR
AS5006
VOYANT - Inteliquent, inc.
1.1M addresses · 150 ranges · US
AS5466
EIRCOM Eircom Limited
1.1M addresses · 24 ranges · IE
AS6535
AS6535 - Telmex Servicios Empresariales S.A.
1.1M addresses · 39 ranges · CL
AS9316
DACOM-PUBNETPLUS-AS-KR-KR - DACOM-PUBNETPLUS
1.1M addresses · 253 ranges · KR
AS133612
VODAFONE-AS-AP - Vodafone Australia Pty Ltd
1.1M addresses · 37 ranges · AU
AS12912
TMPL T-Mobile Polska S.A.
1.1M addresses · 82 ranges · PL
AS22284
AS22284-DOI-OPS - U.S. Department of the Interior
1.1M addresses · 110 ranges · US
AS29695
Altibox_AS Lyse Tele AS
1.1M addresses · 59 ranges · NO
AS22909
COMCAST-22909 - Comcast Cable Communications, LLC
1.1M addresses · 201 ranges · US
AS8070
MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation
1.1M addresses · 24 ranges · US
AS37100
SEACOM Limited - SEACOM Limited
1.1M addresses · 8 ranges · MU
AS6697
BELPAK-AS Republican Unitary Telecommunication Enterprise Beltelecom
1.1M addresses · 93 ranges · BY
AS212238
CDNEXT Datacamp Limited
1.1M addresses · 2,452 ranges · GB
AS30986
Scancom Limited - Scancom Limited
1.1M addresses · 16 ranges · GH
AS11776
ATLANTICBB-JOHNSTOWN - Breezeline
1.1M addresses · 197 ranges · US
AS224
UNINETT - Sikt - Kunnskapssektorens Tjenesteleverandor
1.1M addresses · 16 ranges · NO
AS2764
AAPT - AAPT Limited
1M addresses · 1,073 ranges · AU
AS46690
SNET-FCC - Southern New England Telephone Company and SNET America, Inc.
1M addresses · 2 ranges · US
AS4694
IDCF - IDC Frontier Inc.
1M addresses · 123 ranges · JP
AS1226
CTA-42-AS1226 - California Department of Technology
1M addresses · 25 ranges · US
AS12302
Vodafone_Ro Vodafone Romania S.A.
1M addresses · 130 ranges · RO
AS17561
LCS-AS-AP - LARUS Limited
1M addresses · 365 ranges · HK
AS8866
VIVACOM-AS Vivacom Bulgaria EAD
1M addresses · 275 ranges · BG
AS44034
hi3g Hi3G Access AB
1M addresses · 10 ranges · SE
AS808
GONET-ASN-1 - GONET
1M addresses · 19 ranges · CA
AS13367
COMCAST-13367 - Comcast Cable Communications, LLC
1M addresses · 105 ranges · US
AS36352
AS-COLOCROSSING - HostPapa
1M addresses · 738 ranges · US
AS33667
CMCS - Comcast Cable Communications, LLC
1000K addresses · 178 ranges · US
AS17429
BGCTVNET - BEIJING GEHUA CATV NETWORK CO.LTD
1000K addresses · 16 ranges · CN
AS17488
HATHWAY-NET-AP - Hathway IP Over Cable Internet
999K addresses · 45 ranges · IN
AS13036
TMOBILE-CZ T-Mobile Czech Republic a.s.
992K addresses · 33 ranges · CZ
AS7992
COGECOWAVE - Cogeco Connexion Inc.
989K addresses · 38 ranges · CA
AS203020
HostRoyale HostRoyale Technologies Pvt Ltd
989K addresses · 736 ranges · IN
AS14593
SPACEX-STARLINK - Space Exploration Technologies Corporation
986K addresses · 155 ranges · US
AS11556
AS11556 - Cable & Wireless Panama
986K addresses · 39 ranges · PA
AS29447
TIF-AS Scaleway SAS
983K addresses · 5 ranges · FR
AS18676
AVAYA - Avaya LLC
979K addresses · 31 ranges · US
AS8551
BEZEQ-INTERNATIONAL-AS Bezeq International Ltd.
979K addresses · 109 ranges · IL
AS56044
CMNET-AS-Liaoning - China Mobile communications corporation
973K addresses · 96 ranges · CN
AS4811
CHINANET-SHANGHAI-MAN - China Telecom (Group)
968K addresses · 298 ranges · CN
AS14754
AS14754 - TELECOMUNICACIONES DE GUATEMALA, SOCIEDAD ANONIMA
962K addresses · 194 ranges · GT
AS20055
AS-WHOLESAIL - Wholesail networks LLC
952K addresses · 64 ranges · US
AS23889
Mauritius Telecom Ltd - Mauritius Telecom Ltd
946K addresses · 60 ranges · MU
AS7792
3M-HDQ-AS - 3M Company
942K addresses · 10 ranges · US
AS15895
KSNET-AS "Kyivstar" PJSC
941K addresses · 28 ranges · UA
AS37518
Fiber Grid INC - Fiber Grid INC
932K addresses · 225 ranges · SC
AS9506
SINGTEL-FIBRE - Singtel Fibre Broadband
929K addresses · 69 ranges · SG
AS637
DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD)
929K addresses · 187 ranges · US
AS376
RISQ-AS - Reseau d'Informations Scientifiques du Quebec (RISQ Inc.)
921K addresses · 121 ranges · CA
AS9145
EWETEL EWE TEL GmbH
921K addresses · 44 ranges · DE
AS37287
Zain Zambia PLC - Zain Zambia PLC
919K addresses · 9 ranges · ZM
AS20676
PLUSNET Plusnet GmbH
918K addresses · 60 ranges · DE
AS14654
WAYPORT - AT&T Enterprises, LLC
916K addresses · 52 ranges · US
AS158
ERI-AS - Ericsson Inc.
913K addresses · 61 ranges · US
AS8426
CLARANET-AS Claranet Limited
905K addresses · 81 ranges · GB
AS3633
PROVINCE-OF-BRITISH-COLUMBIA - Province of British Columbia
904K addresses · 71 ranges · CA
AS600
OARNET-AS - OARnet
900K addresses · 103 ranges · US
AS47377
Orange_Belgium_SA Orange Belgium SA
898K addresses · 43 ranges · BE
AS12083
WOW-INTERNET - WideOpenWest Finance LLC
890K addresses · 271 ranges · US
AS21334
ASN-ONE-HU 2Connect Telecommunications Infrastructure & Network Services Ltd.
886K addresses · 27 ranges · HU
AS2675
CDAGOVN - Shared Services Canada
879K addresses · 163 ranges · CA
AS36937
Liquid Telecommunications South Africa (Pty) Ltd - Liquid Telecommunications South Africa (Pty) Ltd
879K addresses · 25 ranges · ZA
AS19429
AS19429 - ETB - Colombia
872K addresses · 190 ranges · CO
AS19527
GOOGLE-2 - Google LLC
868K addresses · 87 ranges · US
AS7497
CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)
868K addresses · 124 ranges · CN
AS2611
BELNET BELNET
866K addresses · 32 ranges · BE
AS8764
Telia-Lietuva Telia Lietuva, AB
862K addresses · 76 ranges · LT
AS29518
BREDBAND2 Bredband2 AB
858K addresses · 91 ranges · SE
AS9500
ONENZ-TRANSIT-AS - One New Zealand Group Limited
857K addresses · 16 ranges · NZ
AS33490
COMCAST-33490 - Comcast Cable Communications, LLC
852K addresses · 123 ranges · US
AS2852
CESNET2 CESNET z.s.p.o.
850K addresses · 20 ranges · CZ
AS36974
MTN COTE D'IVOIRE S.A - MTN COTE D'IVOIRE S.A
847K addresses · 34 ranges · CI
AS3216
SOVAM-AS PJSC "Vimpelcom"
845K addresses · 336 ranges · RU
AS6400
AS6400 - Compania Dominicana de Telefonos S. A.
844K addresses · 53 ranges · DO
AS37705
TOPNET - TOPNET
843K addresses · 22 ranges · TN
AS33588
BRESNAN-33588 - Charter Communications LLC
842K addresses · 34 ranges · US
AS10036
CNM-AS-KR-KR - DLIVE
840K addresses · 58 ranges · KR
AS56040
CMNET-GuangDong-AP - China Mobile communications corporation
837K addresses · 519 ranges · CN
AS15704
AS15704 XTRA TELECOM S.A.
836K addresses · 156 ranges · ES
AS1906
NORTHROP-GRUMMAN - Northrop Grumman
834K addresses · 42 ranges · US
AS36994
Vodacom - Vodacom
830K addresses · 53 ranges · ZA
AS14340
SALESFORCE - Salesforce.com, Inc.
830K addresses · 28 ranges · US
AS29256
INT-PDN-STE-AS Syrian Telecommunication Private Closed Joint Stock Company
827K addresses · 136 ranges · SY
AS36375
UMICH-AS-5 - University of Michigan
826K addresses · 12 ranges · US
AS17378
AS17378 - TierPoint, LLC
824K addresses · 269 ranges · US
AS8400
TELEKOM-AS TELEKOM SRBIJA a.d.
824K addresses · 66 ranges · RS
AS8968
BT-Italia RETELIT-X S.R.L.
822K addresses · 19 ranges · IT
AS6181
FUSE-NET - Cincinnati Bell Telephone Company LLC
819K addresses · 68 ranges · US
AS37075
Airtel Uganda Limited - Airtel Uganda Limited
817K addresses · 11 ranges · UG
AS46887
CROWNCASTLE-AS46887 - Crown Castle Fiber LLC
813K addresses · 334 ranges · US
AS367
DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)
812K addresses · 155 ranges · US
AS23700
Fastnet-AS-ID - Linknet-Fastnet ASN
805K addresses · 17 ranges · ID
AS17621
CNCGROUP-SH - China Unicom Shanghai network
805K addresses · 184 ranges · CN
AS20978
TT_Mobil TT Mobil Iletisim Hizmetleri A.S
804K addresses · 22 ranges · TR
AS10474
Dimension Data - Dimension Data
802K addresses · 185 ranges · ZA
AS33070
RMH-14 - Rackspace Hosting
799K addresses · 70 ranges · US
AS9848
SejongTelecom-AS-KR-KR - SEJONG NETWORKS
796K addresses · 334 ranges · KR
AS23201
AS23201 - Telecel S.A.
790K addresses · 64 ranges · PY
AS9583
SIFY-AS-IN - Sify Limited
787K addresses · 398 ranges · IN
AS56047
CMNET-Hunan-AP - China Mobile communications corporation
786K addresses · 266 ranges · CN
AS231
MISU-231 - Michigan State University
783K addresses · 7 ranges · US
AS9457
DREAMX-AS-KR - DREAMLINE CO.
782K addresses · 178 ranges · KR
AS5603
SIOL-NET Telekom Slovenije, d.d.
782K addresses · 29 ranges · SI
AS11232
MIDCO-NET - Midcontinent Communications
780K addresses · 75 ranges · US
AS855
CANET-ASN-4 - Bell Canada
778K addresses · 280 ranges · CA
AS20011
Dimension Data - Dimension Data
776K addresses · 215 ranges · ZA
AS8560
IONOS-AS IONOS SE
775K addresses · 244 ranges · DE
AS8103
STATE-OF-FLA - Florida Department of Management Services - Division of Telecommunications
772K addresses · 246 ranges · US
AS58593
BLUECLOUD - Shanghai Blue Cloud Technology Co.,Ltd
771K addresses · 13 ranges · CN
AS24400
CMNET-V4shanghai-AS-AP - Shanghai Mobile Communications Co.,Ltd.
762K addresses · 195 ranges · CN
AS7679
QTNET - QTnet,Inc.
761K addresses · 33 ranges · JP
AS45820
TTSL-MEISISP - Tata Teleservices ISP AS
755K addresses · 82 ranges · IN
AS243
HARRIS-ATD-AS - L3Harris Technologies, Inc.
750K addresses · 84 ranges · US
AS4771
SPARKNZ - Spark New Zealand Trading Ltd.
749K addresses · 104 ranges · NZ
AS15897
VodafoneTurkey Vodafone Telekomunikasyon A.S.
745K addresses · 44 ranges · TR
AS2572
MORENET - University of Missouri - dba the Missouri Research and Education Network (MOREnet)
744K addresses · 21 ranges · US
AS9930
TTNET-MY - TIME dotCom Berhad No. 14, Jalan Majistret U1/26 Hicom Glenmarie Industrial Park 40150 Shah Alam Selangor, Malaysia
741K addresses · 57 ranges · MY
AS11686
ZAYO-ENA-11686 - Zayo Bandwidth
735K addresses · 54 ranges · US
AS5645
TEKSAVVY - TekSavvy Solutions, Inc.
733K addresses · 53 ranges · CA
AS5413
Wavenet-AS5413 Wavenet Limited
732K addresses · 87 ranges · GB
AS2687
ATGS-MMD-AS - AT&T Enterprises, LLC
727K addresses · 113 ranges · US
AS6325
ILLINOIS-CENTURY - Illinois Century Network
726K addresses · 51 ranges · US
AS17962
Topway-Net - ShenZhen Topway Video Communication Co. Ltd
723K addresses · 14 ranges · CN
AS24547
CMNET-V4HEBEI-AS-AP - Hebei Mobile Communication Company Limited
722K addresses · 150 ranges · CN
AS14265
US-TELEPACIFIC - TPx Communications
716K addresses · 220 ranges · US
AS5400
BT British Telecommunications Limited
713K addresses · 67 ranges · GB
AS45758
TTBP-AS-AP - Triple T Broadband Public Company Limited
707K addresses · 62 ranges · TH
AS3491
PCCWG-APAC-HK - PCCW Global (HK) Ltd.
707K addresses · 227 ranges · HK
AS703
UUNET - Verizon Business
695K addresses · 60 ranges · US
AS3758
SINGNET - SingNet
694K addresses · 293 ranges · SG
AS21508
COMCAST-21508 - Comcast Cable Communications, LLC
689K addresses · 135 ranges · US
AS3737
AS-PTD - PenTeleData Inc.
687K addresses · 34 ranges · US
AS8011
MONGO-8011 - MongoDB, Inc.
680K addresses · 11 ranges · US
AS17813
MTNL-AP - Mahanagar Telephone Nigam Limited
680K addresses · 27 ranges · IN
AS14080
AS14080 - Telmex Colombia S.A.
679K addresses · 356 ranges · CO
AS4739
INTERNODE-AS - Internode Pty Ltd
678K addresses · 203 ranges · AU
AS38266
VIL-AS-AP - Vodafone Idea Ltd
676K addresses · 67 ranges · IN
AS46375
AS-SONICTELECOM - Sonic Telecom LLC
673K addresses · 38 ranges · US
AS21859
ZEN-ECN - Zenlayer Inc
667K addresses · 644 ranges · US
AS22516
CHARTER-22516-CENTRAL-CA-C3 - Charter Communications LLC
665K addresses · 83 ranges · US
AS22258
COMCAST-22258 - Comcast Cable Communications, LLC
664K addresses · 91 ranges · US
AS7470
TRUEINTERNET-AS-AP - TRUE INTERNET Co.,Ltd.
664K addresses · 279 ranges · TH
AS6855
SK-TELEKOM Slovak Telekom, a.s.
663K addresses · 32 ranges · SK
AS8781
QA-ISP Ooredoo Q.S.C.
661K addresses · 54 ranges · QA
AS1916
AS1916 - Rede Nacional de Ensino e Pesquisa
661K addresses · 87 ranges · BR
AS31822
CITY-UNIVERSITY-OF-NEW-YORK - City University of New York
660K addresses · 11 ranges · US
AS4193
WA-STATE-GOV - State of Washington
656K addresses · 25 ranges · US
AS3128
BRUWS-AS3128 - University of Wisconsin System
656K addresses · 11 ranges · US
AS20845
DIGICABLE 2Connect Telecommunications Infrastructure & Network Services Ltd.
652K addresses · 88 ranges · HU
AS9929
CUII - CHINA UNICOM Industrial Internet Backbone
651K addresses · 165 ranges · CN
AS297
AS297 - National Aeronautics and Space Administration
649K addresses · 27 ranges · US
AS33489
COMCAST-33489 - Comcast Cable Communications, LLC
648K addresses · 175 ranges · US
AS12252
AS12252 - America Movil Peru S.A.C.
647K addresses · 142 ranges · PE
AS10753
LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC
641K addresses · 665 ranges · US
AS29355
KCELL-AS Kcell JSC
634K addresses · 20 ranges · KZ
AS42961
GPRS-AS Mobile Telecommunications Company K.S.C.P.
633K addresses · 16 ranges · KW
AS4721
JCN - JCOM Co., Ltd.
632K addresses · 52 ranges · JP
AS33661
CMCS - Comcast Cable Communications, LLC
631K addresses · 163 ranges · US
AS27747
AS27747 - Telecentro S.A.
623K addresses · 29 ranges · AR
AS87
INDIANA-AS - Indiana University
623K addresses · 10 ranges · US
AS33660
CMCS - Comcast Cable Communications, LLC
622K addresses · 93 ranges · US
AS3302
AS-RETELIT-IRIDEOS Retelit Digital Services S.p.A.
618K addresses · 55 ranges · IT
AS13768
COGECO-PEER1 - Aptum Technologies
616K addresses · 298 ranges · CA
AS17709
APT - Asia Pacific Telecom
616K addresses · 52 ranges · TW
AS14522
AS14522 - SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)
615K addresses · 44 ranges · EC
AS55430
STARHUB-NGNBN - Starhub Ltd
611K addresses · 20 ranges · SG
AS1741
FUNETAS CSC - Tieteen tietotekniikan keskus Oy
610K addresses · 16 ranges · FI
AS31655
ASN-GammaTelecom Gamma Telecom Holdings Ltd
610K addresses · 30 ranges · GB
Looking for a specific address?
The directory answers "who announces this range." To check whether a particular address is a Tor exit or sits in a published cloud range, look it up with the free lookup tool. Whether a visitor is on a VPN or proxy is a property of the live connection, not of the AS or the bare address, so that verdict needs a live visit checked with /v1/evaluate.
Questions
What is an ASN?
An autonomous system number (ASN) identifies a network that announces its own blocks of IP addresses to the internet's routing table: an internet provider, a mobile carrier, a hosting company, a university or a large company. The AS number and its registry name say who routes an address, not who is using it.
How do I find the ASN of an IP address?
Type the address into the lookup box above. The answer names the autonomous system that announces the range the address sits in, with its registry name and country and a link to the AS page and its announced ranges. IPv4 and IPv6 addresses both work.
Does an ASN tell you whether an address is a VPN or a proxy?
No. VPN services rent space from hosting companies and residential proxies run on home connections, so the same AS carries ordinary customers and anonymised traffic. Maskbreak keeps routing data out of its risk score: its VPN and proxy verdicts come from a live visit, not from the AS.
Where does the data come from?
From the public global routing table, refreshed daily. Names and countries are the networks' own registry records, so a company can appear under its network handle, such as AMAZON-02 for part of Amazon's space.