asn.dev

Autonomous system

AS24371 CNGI-CHC-IX-AS-AP CERNET2 IX at Jilin University

Unclassified APNIC

IPv4 addresses 65.54K 1 prefixes
IPv6 prefixes 17 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

CERNET2 IX at Jilin University

China · AI-generated

ix academic china cernet

The AS handle CNGI-CHC-IX-AS-AP is held by CERNET2 IX at Jilin University.

What it's used for

  • The address space carries academic network infrastructure, evidenced by the netname SYR-CERNET and registrant CERNET Helpdesk; IRT-CERNET-AP associated with the IPv4 block.
  • The AS announces 65536 IPv4 addresses and 17 IPv6 prefixes, with only 2 observed neighbours, indicating a role focused on internal academic connectivity or exchange rather than broad transit.

Notable

  • The registrant CERNET Helpdesk; IRT-CERNET-AP aligns with the announcer's identity as part of the China Education and Research Network (CERNET).
  • The inventory consists of a single IPv4 prefix, 49.140.0.0/16, and multiple IPv6 prefixes within the 2001:250::/32 and 2001:da8::/32 ranges.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS23910China Next Generation Internet CERNET299
AS4538China Education and Research Network Center6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-17, 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 1 prefixes · 65.54K addresses IPv6 17 prefixes

CountryNamePrefixes
CNChina18

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS24371
Registry name
CNGI-CHC-IX-AS-AP
Abuse contact
abuse@cernet.edu.cn
Registered
2008-09-04
Last changed
2020-09-03
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
97% valid · 65 valid, 2 with no ROA
ROAs
65 authorising AS24371
ASPA
no ASPA record
IRR
0% registered · 0 of 67 announcements
Route objects
0 naming AS24371

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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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