Autonomous system
AS24372 CNGI-HRB-IX-AS-AP - CERNET2 IX at Harbin Institute of Technology
Unclassified RIPE
Summary
CERNET2 IX at Harbin Institute of Technology
ix education china ipv6
CNGI-HRB-IX-AS-AP is the Autonomous System for the CERNET2 Internet Exchange Point located at Harbin Institute of Technology.
What it's used for
- The space carries IPv6 address blocks associated with the CERNET2 academic network infrastructure, specifically for the Harbin Institute of Technology exchange point.
- The AS announces 42 IPv6 prefixes and 0 IPv4 addresses, with only 2 observed neighbours, indicating a specialized role in facilitating connectivity for the academic network rather than general commercial transit.
Notable
- The registry holder name explicitly identifies the operator as the CERNET2 IX at Harbin Institute of Technology.
- The address inventory consists entirely of IPv6 prefixes within the 2001:250::/32 range, which is allocated to CERNET2, the next-generation Chinese academic 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
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 | 96 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-04, 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 15 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 15 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS24372- Registry name
- CNGI-HRB-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
- 97% valid · 61 valid, 2 with no ROA
- ROAs
- 62 authorising AS24372
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 63 announcements
- Route objects
- 0 naming AS24372
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: 453 networks and 1,853 prefixes, as published 2026-11-05. 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