AS23724
CHINANET-IDC-BJ-AP IDC, China Telecommunications Corporation

AS23724 announces 1,893,376 IPv4 addresses across 327 routed ranges, registered in CN. Figures come from the public global routing table and are refreshed daily.

Is AS23724 datacenter space?

Yes, at least in part. Address space announced by AS23724 appears in AWS's own published IP ranges, which means the provider documents this space as its infrastructure. Traffic from it carries the dch signal in Maskbreak's verdict, worth 40 points toward the 0–100 risk score — enough to reach the review band on its own, never enough to block.

See AWS IP ranges for the full published footprint.

What an AS number does and does not tell you

An autonomous system number identifies who announces a block of addresses to the internet's routing table. It is an organisational fact, and a durable one — useful for attributing traffic to a hosting company, a carrier, or a university.

It is not a risk signal. A residential ISP's AS carries the household traffic of millions of ordinary customers and, at the same time, whatever residential proxy exits have been installed on those customers' devices. A hosting AS carries scrapers and legitimate server-to-server integrations in the same ranges. Scoring an address on the reputation of its AS produces exactly the false positives that make fraud tooling untrustworthy.

Announced IPv4 ranges

First 100 of 327 ranges.

Check a specific address

The AS tells you who announces a range. Whether one address inside it is currently a tunnel is a live question, answered per address — for example 1.203.94.0, the first address in this AS's announced space. The free lookup tool takes any address, and the IP intelligence hub explains what each signal means.