Network · data from 2026-11-12
AS11452 MOUNT-SINAI - Mount Sinai School of Medicine
Registry name: MOUNT-SINAI - Mount Sinai School of Medicine, US · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS11452, 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.
| 146.203.128.0/21 | No ROA | None | 672 100% |
| 146.203.192.0/18 | No ROA | Other origin only | 672 100% |
| 159.123.127.0/24 | No ROA | None | 672 100% |
| 146.203.0.0/18 | No ROA | Other origin only | 670 100% |
| 146.203.64.0/18 | No ROA | Other origin only | 670 100% |
| 146.203.138.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.139.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.148.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.149.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.150.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.151.0/24 | Valid | Other IRR onlyRADB | 671 100% |
| 146.203.136.0/21 | Valid | RIR databaseARIN | 672 100% |
| 146.203.144.0/22 | Valid | RIR databaseARIN | 672 100% |
| 146.203.148.0/22 | Valid | RIR databaseARIN | 672 100% |
AS-SET
AS11452 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 17 are in fix.csv.
- ROA: none5
- Route object: none5
- Route object: RIR6
- Route object: not announced1
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 146.203.128.0/21 | No ROA covers it. Add a ROA for AS11452, maxLength 21. |
| Route object: none | 146.203.128.0/21 | No route object for it. Add a route object with origin AS11452 in the RIR database for the space. |
| ROA: none | 146.203.192.0/18 | No ROA covers it. Add a ROA for AS11452, maxLength 18. |
| Route object: none | 146.203.192.0/18 | Route objects for it name AS7029. Add a route object with origin AS11452 in the RIR database for the space. |
| ROA: none | 159.123.127.0/24 | No ROA covers it. Add a ROA for AS11452, maxLength 24. |
| Route object: none | 159.123.127.0/24 | No route object for it. Add a route object with origin AS11452 in the RIR database for the space. |
| ROA: none | 146.203.0.0/18 | No ROA covers it. Add a ROA for AS11452, maxLength 18. |
| Route object: none | 146.203.0.0/18 | Route objects for it name AS7029. Add a route object with origin AS11452 in the RIR database for the space. |
| ROA: none | 146.203.64.0/18 | No ROA covers it. Add a ROA for AS11452, maxLength 18. |
| Route object: none | 146.203.64.0/18 | Route objects for it name AS7029. Add a route object with origin AS11452 in the RIR database for the space. |
| Route object: RIR | 146.203.138.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 146.203.139.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 146.203.148.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 146.203.149.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 146.203.150.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 146.203.151.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS11452 whose prefix no peer sees AS11452 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 146.203.135.0/24 | ARIN | Valid |
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.