AS209300 TWD2-NET Wende Tan
🇨🇳Org handle: ORG-WT43-RIPE
TWD2 Education and Research Network
RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
7total
1 IPv46 IPv6
IPv4 Addresses
Allocated (RIR)0
Announced (BGP)256
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Routing hygiene
Score 6/100 · Low riskRPKI ROA coverage
85.7%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
6
diversity 82/100
- 14% of announced prefixes (1 of 7) have no valid ROA
Based on 7 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained
Announced Prefixes
(BGP)7|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | Other IRR | 2026-10-26 | |
| Valid | APNICOther IRR | 2026-10-26 | |
| Valid | APNIC | 2026-10-26 | |
| Valid | APNIC | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| Valid | - | 2026-10-26 | |
| Valid | - | 2026-10-26 |
Allocated Prefixes
(RIR)5Prefix | Country | RIR | Status |
|---|---|---|---|
| 2404:f4c0:f000::/44 | 🇨🇳 CN | APNIC | assigned |
| 2a05:1085::/32 | 🇬🇧 GB | RIPE | assigned |
| 2a0c:b641:570::/44 | 🇬🇧 GB | RIPE | assigned |
| 2a0c:b641:570::/48 | 🇬🇧 GB | RIPE | assigned |
| 2a0c:b641:573::/48 | 🇬🇧 GB | RIPE | assigned |
All 7 announced prefixes of AS209300 →
Upstream Providers(10)
| ASN | Name |
|---|---|
| AS4842 | 🇨🇳TH-AS-AP - Tianhai InfoTech |
| AS6939 | 🇺🇸HURRICANE - Hurricane Electric LLC |
| AS8772 | 🇧🇬NLineLLC Netassist International EOOD |
| AS20473 | 🇺🇸AS-VULTR - The Constant Company, LLC |
| AS24239 | 🇨🇳TWD2-NET-AS-AP - TWD2 Education and Research Network |
| AS29632 | 🇧🇬NASSIST-AS Netassist International EOOD |
| AS38255 | 🇨🇳FITI-AS-AP - China Education and Research Network (CERNET) |
| AS45576 | 🇨🇳CERNET2-TSINGHUA6-AS-AP - Tsinghua University |
| AS142650 | 🇨🇳AS142650-1 - China Education and Research Network (CERNET) |
| AS212683 | 🇬🇧OLILO-AS Olilo UK & Ireland Ltd. |
BGP Neighbours
(seen in AS paths)Upstreams (6)
Networks AS209300 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (1)
Networks whose own prefixes AS209300 passes on: usually its customers.
- AS24239TWD2 Education And Research Network4
ASPA
Published10 upstreams, 0 downstreams
Authorized Upstream Providers
Expires 2026-10-27
Abuse Contact
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/209300Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/209300" | jq