asn.dev

Autonomous system

AS24369 CNGI-SY-IX-AS-AP CERNET2 IX at Northeast University

Unclassified ARIN

IPv4 addresses 15.36K 7 prefixes
IPv6 prefixes 35 counted as prefixes, not addresses
Countries 1 mostly CN
Exchanges 0 recorded by PCH
Upstreams 2 1 downstream
Flagged prefixes 0 none

Summary

CERNET2 IX at Northeast University

China · AI-generated

ix cernet china education

CNGI-SY-IX-AS-AP is the Autonomous System for the CERNET2 Internet Exchange Point hosted at Northeast University.

What it's used for

  • The address space carries CERNET infrastructure, with all eight IPv4 prefixes registered under the netname CERNET-CN and registrant IRT-CERNET-AP.
  • The AS announces 17,408 IPv4 addresses across 8 prefixes and 35 IPv6 prefixes, while maintaining only 3 observed routing neighbours, a ratio consistent with an exchange point or internal academic network rather than a transit provider.

Notable

  • Registrants align with the announcer, as all sampled prefixes list IRT-CERNET-AP or CERNET Helpdesk as the responsible party.
  • The inventory consists of blocks within the 210.30.0.0/16 and 202.118.0.0/16 ranges, reflecting the standard allocation for China's academic and research network.

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, 1 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS23910China Next Generation Internet CERNET257
AS4538China Education and Research Network Center11

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 7 prefixes · 15.36K addresses IPv6 35 prefixes

CountryNamePrefixes
CNChina42

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS24369
Registry name
CNGI-SY-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 · 57 valid, 2 with no ROA
ROAs
60 authorising AS24369
ASPA
no ASPA record
IRR
0% registered · 0 of 59 announcements
Route objects
0 naming AS24369

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