Autonomous system
AS24363 CNGI-JNN-IX-AS-AP - CERNET2 IX at Shandong University
Unclassified APNIC
Summary
CERNET2 IX at Shandong University
ix education china cernet
CNGI-JNN-IX-AS-AP is the autonomous system for the CERNET2 Internet Exchange Point hosted at Shandong University.
What it's used for
- The address space is registered under the netname
NJR-CERNETwith registrantsCERNET HelpdeskandIRT-CERNET-AP, indicating it carries traffic for the China Education and Research Network (CERNET). - The AS announces 6,656 IPv4 addresses across 3 prefixes and 7 IPv6 prefixes, while maintaining only 3 observed neighbours. This high address-to-neighbour ratio suggests a role focused on aggregating and exchanging traffic for the CERNET2 backbone rather than providing general transit.
Notable
- All three announced IPv4 prefixes share the same registrant (
CERNET Helpdesk) and netname (NJR-CERNET), confirming a unified administrative domain for the exchange point's address space. - The inventory consists of a large contiguous block in the 121.250.0.0/16 range and several distinct IPv6 /32 and /48 prefixes, reflecting the dual-stack nature of the CERNET2 infrastructure.
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
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS23910 | China Next Generation Internet CERNET2 | 561 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 0 prefixes · 0 addresses IPv6 7 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 7 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS24363- Registry name
- CNGI-JNN-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
- RPKI
- 0% valid · 0 valid, 17 with no ROA
- ROAs
- 198 authorising AS24363
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 17 announcements
- Route objects
- 0 naming AS24363
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: 448 networks and 1,851 prefixes, as published 2026-11-04. 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