Network · data from 2026-11-12
AS3661 The Chinese University of Hong Kong AS 3661
Registry name: ERX-CUHKNET - The Chinese University of Hong Kong, HK · PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS3661, 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.
| 137.189.196.0/24 | No ROA | Other origin onlycovered by 137.189.0.0/16 | 672 100% |
| 203.188.64.0/20 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 175.159.224.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 202.40.216.0/24 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 2001:ce0:3::/48 | No ROA | Other IRR onlyNTTCOM, RADB | 636 100% |
| 123.255.64.0/21 | No ROA | RIR databaseAPNIC, RADB | 672 100% |
| 137.189.0.0/16 | No ROA | RIR databaseAPNIC, NTTCOM, RADB | 672 100% |
| 103.49.160.0/22 | No ROA | RIR databaseAPNIC, NTTCOM, RADB | 670 100% |
| 2405:3000::/32 | No ROA | RIR databaseAPNIC, NTTCOM, RADB | 636 100% |
AS-SET
AS3661's PeeringDB record names no 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 22 are in fix.csv.
- ROA: none9
- Route object: none1
- Route object: RIR4
- Route object: not announced8
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 137.189.196.0/24 | No ROA covers it. Add a ROA for AS3661, maxLength 24. |
| Route object: none | 137.189.196.0/24 | Route objects for it name AS3662, AS4641, AS45474. A route object for 137.189.0.0/16 with origin AS3661 covers it (filters allowing more-specifics accept it). Add a route object with origin AS3661 in the RIR database for the space. |
| ROA: none | 203.188.64.0/20 | No ROA covers it. Add a ROA for AS3661, maxLength 20. |
| Route object: RIR | 203.188.64.0/20 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.159.224.0/22 | No ROA covers it. Add a ROA for AS3661, maxLength 22. |
| Route object: RIR | 175.159.224.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 202.40.216.0/24 | No ROA covers it. Add a ROA for AS3661, maxLength 24. |
| Route object: RIR | 202.40.216.0/24 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 2001:ce0:3::/48 | No ROA covers it. Add a ROA for AS3661, maxLength 48. |
| Route object: RIR | 2001:ce0:3::/48 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 123.255.64.0/21 | No ROA covers it. Add a ROA for AS3661, maxLength 21. |
| ROA: none | 137.189.0.0/16 | No ROA covers it. Add a ROA for AS3661, maxLength 16. |
| ROA: none | 103.49.160.0/22 | No ROA covers it. Add a ROA for AS3661, maxLength 22. |
| ROA: none | 2405:3000::/32 | No ROA covers it. Add a ROA for AS3661, maxLength 32. |
Route objects not announced
Route objects with origin AS3661 whose prefix no peer sees AS3661 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 43.230.116.0/22 | APNIC, RADB | Valid |
| 43.252.200.0/22 | APNIC, RADB | No ROA |
| 103.29.12.0/22 | APNIC, RADB | No ROA |
| 123.255.64.0/19 | RADB | No ROA |
| 123.255.64.0/20 | APNIC, NTTCOM, RADB | No ROA |
| 123.255.72.0/21 | APNIC | No ROA |
| 123.255.80.0/21 | APNIC, NTTCOM, RADB | No ROA |
| 137.189.0.0/24 | 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.