Network · data from 2026-11-12
AS18180 TWNIC-AS - Taiwan Network Information Center
Registry name: TWNIC-AS - Taiwan Network Information Center, TW · not in PeeringDB
16IPv4 routes
0.0% RPKI valid · 18.8% with a route object
0IPv6 routes
0RPKI invalid
0 origin · 0 maxLength
16No ROA
13 with no route object for this origin
5Low visibility
seen by under 10% of full-table peers
2Route objects not announced
registered with origin AS18180, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS18180, things to look at first. Visibility = full-table peers that see it, of 673 (IPv4) and 636 (IPv6) on 75 collectors. Also as routes.csv.
| 221.128.236.0/23 | No ROA | Nonecovered by 221.128.128.0/17 | 665 99% |
| 221.128.242.0/23 | No ROA | Nonecovered by 221.128.128.0/17 | 665 99% |
| 221.128.236.0/24 | No ROA | Other origin onlycovered by 221.128.128.0/17 | 551 82% |
| 221.128.241.0/24 | No ROA | Other origin onlycovered by 221.128.128.0/17 | 543 81% |
| 221.128.244.0/24 | No ROA | Other origin onlycovered by 221.128.128.0/17 | 543 81% |
| 221.128.252.0/22 | No ROA | Nonecovered by 221.128.248.0/21 | 307 46% |
| 221.128.240.0/22 | No ROA | Nonecovered by 221.128.128.0/17 | 187 28% |
| 221.128.244.0/22 | No ROA | Nonecovered by 221.128.128.0/17 | 187 28% |
| 221.128.128.0/23 | No ROA | Other origin onlycovered by 221.128.128.0/22 | 65 10%low visibility |
| 221.128.130.0/23 | No ROA | Nonecovered by 221.128.128.0/22 | 65 10%low visibility |
| 221.128.240.0/23 | No ROA | Nonecovered by 221.128.128.0/17 | 65 10%low visibility |
| 221.128.242.0/24 | No ROA | Other origin onlycovered by 221.128.128.0/17 | 65 10%low visibility |
| 221.128.248.0/22 | No ROA | Nonecovered by 221.128.248.0/21 | 65 10%low visibility |
| 221.128.248.0/21 | No ROA | Other IRR onlyRADB | 667 99% |
| 221.128.128.0/22 | No ROA | Other IRR onlyRADB | 665 99% |
| 221.128.195.0/24 | No ROA | Other IRR onlyRADB | 665 99% |
AS-SET
AS18180 isn't in PeeringDB, where networks name their AS-SET.
Fix list
The changes that would bring RPKI, the IRR and what's announced into line. Some are deliberate (a route object kept for a backup route, say); the network decides. All 34 are in fix.csv.
- ROA: none16
- Route object: none13
- Route object: RIR3
- Route object: not announced2
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 221.128.236.0/23 | No ROA covers it. Add a ROA for AS18180, maxLength 23. |
| Route object: none | 221.128.236.0/23 | No route object for it. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.242.0/23 | No ROA covers it. Add a ROA for AS18180, maxLength 23. |
| Route object: none | 221.128.242.0/23 | No route object for it. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.236.0/24 | No ROA covers it. Add a ROA for AS18180, maxLength 24. |
| Route object: none | 221.128.236.0/24 | Route objects for it name AS18231. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.241.0/24 | No ROA covers it. Add a ROA for AS18180, maxLength 24. |
| Route object: none | 221.128.241.0/24 | Route objects for it name AS18231. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.244.0/24 | No ROA covers it. Add a ROA for AS18180, maxLength 24. |
| Route object: none | 221.128.244.0/24 | Route objects for it name AS18231. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.252.0/22 | No ROA covers it. Add a ROA for AS18180, maxLength 22. |
| Route object: none | 221.128.252.0/22 | No route object for it. A route object for 221.128.248.0/21 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.240.0/22 | No ROA covers it. Add a ROA for AS18180, maxLength 22. |
| Route object: none | 221.128.240.0/22 | No route object for it. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.244.0/22 | No ROA covers it. Add a ROA for AS18180, maxLength 22. |
| Route object: none | 221.128.244.0/22 | No route object for it. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.128.0/23 | No ROA covers it. Add a ROA for AS18180, maxLength 23. |
| Route object: none | 221.128.128.0/23 | Route objects for it name AS4755. A route object for 221.128.128.0/22 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.130.0/23 | No ROA covers it. Add a ROA for AS18180, maxLength 23. |
| Route object: none | 221.128.130.0/23 | No route object for it. A route object for 221.128.128.0/22 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.240.0/23 | No ROA covers it. Add a ROA for AS18180, maxLength 23. |
| Route object: none | 221.128.240.0/23 | No route object for it. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.242.0/24 | No ROA covers it. Add a ROA for AS18180, maxLength 24. |
| Route object: none | 221.128.242.0/24 | Route objects for it name AS18231. A route object for 221.128.128.0/17 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.248.0/22 | No ROA covers it. Add a ROA for AS18180, maxLength 22. |
| Route object: none | 221.128.248.0/22 | No route object for it. A route object for 221.128.248.0/21 with origin AS18180 covers it (filters allowing more-specifics accept it). Add a route object with origin AS18180 in the RIR database for the space. |
| ROA: none | 221.128.248.0/21 | No ROA covers it. Add a ROA for AS18180, maxLength 21. |
| Route object: RIR | 221.128.248.0/21 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 221.128.128.0/22 | No ROA covers it. Add a ROA for AS18180, maxLength 22. |
| Route object: RIR | 221.128.128.0/22 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 221.128.195.0/24 | No ROA covers it. Add a ROA for AS18180, maxLength 24. |
| Route object: RIR | 221.128.195.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS18180 whose prefix no peer sees AS18180 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 221.128.128.0/17 | RADB | No ROA |
| 221.128.196.0/22 | RADB | No ROA |
Routes: the 08:00 UTC snapshots of 2026-11-12 from 75 RIPE RIS and RouteViews collectors. RPKI: our rpki-client run before the snapshot. IRR: the day's dumps of the five RIR databases and RADB's mirrors. The LEVEL3 and IDNIC databases publish no dump and aren't read, so route objects only there count as none.