Network · data from 2026-11-12
AS31 CIT - California Institute of Technology
Registry name: CIT - California Institute of Technology, US · not in PeeringDB
14IPv4 routes
0.0% RPKI valid · 35.7% with a route object
3IPv6 routes
0.0% RPKI valid · 0.0% with a route object
0RPKI invalid
0 origin · 0 maxLength
17No ROA
12 with no route object for this origin
4Low visibility
seen by under 10% of full-table peers
2Route objects not announced
registered with origin AS31, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS31, 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.
| 131.215.229.0/24 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.230.0/24 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.234.0/24 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.239.0/24 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.240.0/24 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.242.0/23 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 131.215.244.0/23 | No ROA | Nonecovered by 131.215.0.0/16 | 673 100% |
| 2607:f520::/32 | No ROA | Other origin only | 632 99% |
| 137.164.3.74/31 | No ROA | None | 1 0%low visibility |
| 137.164.3.204/31 | No ROA | None | 1 0%low visibility |
| 2607:f380:1::118:9a40:34a0/123 | No ROA | None | 1 0%low visibility |
| 2607:f380:1::118:9a40:3cc0/123 | No ROA | None | 1 0%low visibility |
| 131.215.0.0/16 | No ROA | Other IRR onlyRADB | 670 100% |
| 134.4.0.0/16 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 192.31.43.0/24 | No ROA | Other IRR onlyNTTCOM, RADB | 670 100% |
| 192.41.208.0/24 | No ROA | Other IRR onlyRADB | 670 100% |
| 192.12.19.0/24 | No ROA | Other IRR onlyRADB | 669 99% |
AS-SET
AS31 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 36 are in fix.csv.
- ROA: none17
- Route object: none12
- Route object: RIR5
- Route object: not announced2
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 131.215.229.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: none | 131.215.229.0/24 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.230.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: none | 131.215.230.0/24 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.234.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: none | 131.215.234.0/24 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.239.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: none | 131.215.239.0/24 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.240.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: none | 131.215.240.0/24 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.242.0/23 | No ROA covers it. Add a ROA for AS31, maxLength 23. |
| Route object: none | 131.215.242.0/23 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.244.0/23 | No ROA covers it. Add a ROA for AS31, maxLength 23. |
| Route object: none | 131.215.244.0/23 | No route object for it. A route object for 131.215.0.0/16 with origin AS31 covers it (filters allowing more-specifics accept it). Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 2607:f520::/32 | No ROA covers it. Add a ROA for AS31, maxLength 32. |
| Route object: none | 2607:f520::/32 | Route objects for it name AS226. Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 137.164.3.74/31 | No ROA covers it. Add a ROA for AS31, maxLength 31. |
| Route object: none | 137.164.3.74/31 | No route object for it. Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 137.164.3.204/31 | No ROA covers it. Add a ROA for AS31, maxLength 31. |
| Route object: none | 137.164.3.204/31 | No route object for it. Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 2607:f380:1::118:9a40:34a0/123 | No ROA covers it. Add a ROA for AS31, maxLength 123. |
| Route object: none | 2607:f380:1::118:9a40:34a0/123 | No route object for it. Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 2607:f380:1::118:9a40:3cc0/123 | No ROA covers it. Add a ROA for AS31, maxLength 123. |
| Route object: none | 2607:f380:1::118:9a40:3cc0/123 | No route object for it. Add a route object with origin AS31 in the RIR database for the space. |
| ROA: none | 131.215.0.0/16 | No ROA covers it. Add a ROA for AS31, maxLength 16. |
| Route object: RIR | 131.215.0.0/16 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 134.4.0.0/16 | No ROA covers it. Add a ROA for AS31, maxLength 16. |
| Route object: RIR | 134.4.0.0/16 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 192.31.43.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: RIR | 192.31.43.0/24 | Route object only in NTTCOM, RADB. Add it in the RIR database for the space. |
| ROA: none | 192.41.208.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: RIR | 192.41.208.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 192.12.19.0/24 | No ROA covers it. Add a ROA for AS31, maxLength 24. |
| Route object: RIR | 192.12.19.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS31 whose prefix no peer sees AS31 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 192.43.243.0/24 | RADB | No ROA |
| 192.54.249.0/24 | 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.