Autonomous system
AS209300 TWD2-NET TWD2 Education and Research Network
Unclassified RIPE
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
9 upstream, 2 downstream and 13 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS212683 | Olilo UK & Ireland Ltd. | 92 |
| AS38255 | China Education and Research Network (CERNET) | 34 |
| AS142650 | China Education and Research Network (CERNET) | 34 |
| AS29632 | Netassist International EOOD | 23 |
| AS45576 | Tsinghua University | 23 |
| AS8772 | NetAssist LLC | 9 |
| AS20473 | The Constant Company, LLC | 1 |
| AS37989 | DCS1 Pte. Ltd. | 1 |
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 · 256 addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CN | China | 5 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS209300- Registry name
- TWD2-NET
- Registrant
- Wende Tan
- Abuse contact
- twd2.me+abuse@gmail.com
- Registered
- 2019-03-01
- Last changed
- 2026-04-30
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 83% valid · 5 valid, 1 with no ROA
- ROAs
- 4 authorising AS209300
- ASPA
- 10 declared providers
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 39 naming AS209300
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 1,773 prefixes, as published 2026-10-13. 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