Network · data from 2026-11-12
AS4158 City University of Hong Kong
Registry name: CITYUNI-AS-AP - City University of Hong Kong, HK · PeeringDB
12IPv4 routes
0.0% RPKI valid · 66.7% with a route object
1IPv6 routes
0.0% RPKI valid · 100.0% with a route object
0RPKI invalid
0 origin · 0 maxLength
13No ROA
4 with no route object for this origin
4Low visibility
seen by under 10% of full-table peers
2Route objects not announced
registered with origin AS4158, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS4158, 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.
| 203.188.112.128/27 | No ROA | None | 8 1%low visibility |
| 175.159.207.0/24 | No ROA | Other origin onlycovered by 175.159.200.0/21 | 2 0%low visibility |
| 144.214.128.0/24 | No ROA | Other origin onlycovered by 144.214.0.0/16 | 1 0%low visibility |
| 203.188.112.112/28 | No ROA | None | 1 0%low visibility |
| 144.214.0.0/16 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 175.159.64.0/19 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 175.159.200.0/21 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 202.125.216.0/21 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 203.188.80.0/21 | No ROA | Other IRR onlyNTTCOM, RADB | 672 100% |
| 175.159.208.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 202.125.252.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 203.188.88.0/22 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 2001:ce0:5::/48 | No ROA | Other IRR onlyNTTCOM, RADB | 636 100% |
AS-SET
AS4158'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 28 are in fix.csv.
- ROA: none13
- Route object: none4
- Route object: RIR9
- Route object: not announced2
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 203.188.112.128/27 | No ROA covers it. Add a ROA for AS4158, maxLength 27. |
| Route object: none | 203.188.112.128/27 | No route object for it. Add a route object with origin AS4158 in the RIR database for the space. |
| ROA: none | 175.159.207.0/24 | No ROA covers it. Add a ROA for AS4158, maxLength 24. |
| Route object: none | 175.159.207.0/24 | Route objects for it name AS45474. A route object for 175.159.200.0/21 with origin AS4158 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4158 in the RIR database for the space. |
| ROA: none | 144.214.128.0/24 | No ROA covers it. Add a ROA for AS4158, maxLength 24. |
| Route object: none | 144.214.128.0/24 | Route objects for it name AS3662, AS45474. A route object for 144.214.0.0/16 with origin AS4158 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4158 in the RIR database for the space. |
| ROA: none | 203.188.112.112/28 | No ROA covers it. Add a ROA for AS4158, maxLength 28. |
| Route object: none | 203.188.112.112/28 | No route object for it. Add a route object with origin AS4158 in the RIR database for the space. |
| ROA: none | 144.214.0.0/16 | No ROA covers it. Add a ROA for AS4158, maxLength 16. |
| Route object: RIR | 144.214.0.0/16 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.159.64.0/19 | No ROA covers it. Add a ROA for AS4158, maxLength 19. |
| Route object: RIR | 175.159.64.0/19 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.159.200.0/21 | No ROA covers it. Add a ROA for AS4158, maxLength 21. |
| Route object: RIR | 175.159.200.0/21 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 202.125.216.0/21 | No ROA covers it. Add a ROA for AS4158, maxLength 21. |
| Route object: RIR | 202.125.216.0/21 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 203.188.80.0/21 | No ROA covers it. Add a ROA for AS4158, maxLength 21. |
| Route object: RIR | 203.188.80.0/21 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 175.159.208.0/22 | No ROA covers it. Add a ROA for AS4158, maxLength 22. |
| Route object: RIR | 175.159.208.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 202.125.252.0/22 | No ROA covers it. Add a ROA for AS4158, maxLength 22. |
| Route object: RIR | 202.125.252.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 203.188.88.0/22 | No ROA covers it. Add a ROA for AS4158, maxLength 22. |
| Route object: RIR | 203.188.88.0/22 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 2001:ce0:5::/48 | No ROA covers it. Add a ROA for AS4158, maxLength 48. |
| Route object: RIR | 2001:ce0:5::/48 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS4158 whose prefix no peer sees AS4158 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 144.214.0.0/24 | RADB | No ROA |
| 144.214.96.0/21 | 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.