Autonomous system
AS24370 CNGI-DLN-IX-AS-AP
Unclassified APNIC
Summary
CERNET2 IX at Dalian University of Technology
ix education ipv6 china
CNGI-DLN-IX-AS-AP is held by CERNET2 IX at Dalian University of Technology.
What it's used for
- The space carries IPv6 prefixes under the
2001:250:7000::/48range, consistent with the CERNET2 (China Education and Research Network) infrastructure. - The AS announces 27 IPv6 prefixes and 0 IPv4 addresses, with 2 observed neighbours, indicating a specialized exchange point or internal research network segment rather than a general transit provider.
Notable
- The registrant name explicitly identifies the holder as the CERNET2 Internet Exchange at Dalian University of Technology.
- The address inventory consists entirely of IPv6 space, with no IPv4 prefixes in the inventory or announced.
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 | 1 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-06, 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 0 prefixes
This network announces no prefixes we can see.
Registry
Allocation record
- Registry
- APNIC
- Handle
AS24370- Registry name
- CNGI-DLN-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
- 100% valid · 1 valid, 0 with no ROA
- ROAs
- 36 authorising AS24370
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 1 announcements
- Route objects
- 0 naming AS24370
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: 454 networks and 1,854 prefixes, as published 2026-11-06. 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