asn.dev

Autonomous system

AS24151 CNNIC-CRITICAL-AP China Internet Network Infomation Center

Unclassified APNIC

IPv4 addresses 11.52K 20 prefixes
IPv6 prefixes 124 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 7 3 downstream
Flagged prefixes 0 none

Summary

CNNIC

China · AI-generated

registry china infrastructure critical

The AS handle CNNIC-CRITICAL-AP is held by CNNIC (China Internet Network Information Center).

What it's used for

  • The address space carries registry and critical infrastructure functions, evidenced by netnames CNNIC and CNNIC-CRITICAL-CN and registrants CNNIC IPAS CONFEDERATION and IRT-CNNIC-CN.
  • The AS announces 11,520 IPv4 addresses across 20 prefixes and 120 IPv6 prefixes, with 10 observed neighbours, indicating a specialized infrastructure role rather than mass access or transit.

Notable

  • Registrants consistently identify the holder as CNNIC IPAS CONFEDERATION or IRT-CNNIC-CN, aligning with the announcer's identity.
  • The inventory is finely subdivided into multiple /22, /23, and /24 blocks within the 218.241.0.0/16 and 125.208.0.0/16 ranges, characteristic of an internal corporate estate.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

7 upstream, 3 downstream and 19 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS7497Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)1,031
AS4808China Unicom Beijing Province Network653
AS1280Internet Systems Consortium, Inc.593
AS23600Korea Internet Security Agency416
AS4847China Networks Inter-Exchange364
AS38283CHINANET SiChuan Telecom Internet Data Center223
AS21859Zenlayer Inc138

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 20 prefixes · 11.52K addresses IPv6 124 prefixes

CountryNamePrefixes
CNChina144

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS24151
Registry name
CNNIC-CRITICAL-AP
Abuse contact
ipas@cnnic.cn
Registered
2008-09-04
Last changed
2021-06-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 98 with no ROA
ROAs
0 authorising AS24151
ASPA
no ASPA record
IRR
96% registered · 94 of 98 announcements
Route objects
188 naming AS24151

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 432 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check