Autonomous system
AS24489 TEIN2-NORTH-AP Trans-Eurasia Information Network TEIN2 - North
Unclassified APNIC
Summary
TEIN2 North
research education network china
TEIN2-NORTH-AP is operated by Trans-Eurasia Information Network (TEIN2) - North.
What it's used for
- The address space carries research and education network traffic, evidenced by the netname
TEIN2-CERNETand registrantCERNET Helpdesk. - The AS announces 2048 IPv4 addresses and 1 IPv6 prefix, with 6 observed neighbours, indicating a role as a regional research network node rather than a large-scale commercial transit provider.
Notable
- The registrant
CERNET Helpdeskaligns with the TEIN2 handle, confirming the space is managed by the China Education and Research Network infrastructure. - The inventory consists of a single IPv4 prefix
202.179.240.0/21and one IPv6 prefix2001:254::/33, representing a consolidated block for the northern region of the TEIN2 project.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS24489- Registry name
- TEIN2-NORTH-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, 4 with no ROA
- ROAs
- 0 authorising AS24489
- ASPA
- no ASPA record
- IRR
- 50% registered · 2 of 4 announcements
- Route objects
- 2 naming AS24489
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 1,771 prefixes, as published 2026-10-15. 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