Network · data from 2026-11-12
AS11951 MCSP - Medical Computer Systems
Registry name: MCSP - Medical Computer Systems, US · not in PeeringDB
11IPv4 routes
0.0% RPKI valid · 45.5% with a route object
0IPv6 routes
0RPKI invalid
0 origin · 0 maxLength
11No ROA
6 with no route object for this origin
1Low visibility
seen by under 10% of full-table peers
7Route objects not announced
registered with origin AS11951, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS11951, 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.
| 66.186.129.0/24 | No ROA | Nonecovered by 66.186.128.0/20 | 672 100% |
| 204.152.42.0/24 | No ROA | Nonecovered by 204.152.42.0/23 | 672 100% |
| 207.152.134.0/24 | No ROA | Nonecovered by 207.152.128.0/18 | 672 100% |
| 207.152.135.0/24 | No ROA | Nonecovered by 207.152.128.0/18 | 672 100% |
| 209.50.193.0/24 | No ROA | Nonecovered by 209.50.192.0/19 | 672 100% |
| 204.152.43.0/24 | No ROA | Nonecovered by 204.152.42.0/23 | 2 0%low visibility |
| 66.186.128.0/20 | No ROA | Other IRR onlyRADB | 672 100% |
| 204.152.42.0/23 | No ROA | Other IRR onlyRADB | 672 100% |
| 205.147.160.0/19 | No ROA | Other IRR onlyRADB | 672 100% |
| 207.152.128.0/18 | No ROA | Other IRR onlyRADB | 672 100% |
| 209.50.192.0/19 | No ROA | Other IRR onlyRADB | 672 100% |
AS-SET
AS11951 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 29 are in fix.csv.
- ROA: none11
- Route object: none6
- Route object: RIR5
- Route object: not announced7
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 66.186.129.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 66.186.129.0/24 | No route object for it. A route object for 66.186.128.0/20 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 204.152.42.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 204.152.42.0/24 | No route object for it. A route object for 204.152.42.0/23 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 207.152.134.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 207.152.134.0/24 | No route object for it. A route object for 207.152.128.0/18 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 207.152.135.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 207.152.135.0/24 | No route object for it. A route object for 207.152.128.0/18 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 209.50.193.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 209.50.193.0/24 | No route object for it. A route object for 209.50.192.0/19 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 204.152.43.0/24 | No ROA covers it. Add a ROA for AS11951, maxLength 24. |
| Route object: none | 204.152.43.0/24 | No route object for it. A route object for 204.152.42.0/23 with origin AS11951 covers it (filters allowing more-specifics accept it). Add a route object with origin AS11951 in the RIR database for the space. |
| ROA: none | 66.186.128.0/20 | No ROA covers it. Add a ROA for AS11951, maxLength 20. |
| Route object: RIR | 66.186.128.0/20 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 204.152.42.0/23 | No ROA covers it. Add a ROA for AS11951, maxLength 23. |
| Route object: RIR | 204.152.42.0/23 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 205.147.160.0/19 | No ROA covers it. Add a ROA for AS11951, maxLength 19. |
| Route object: RIR | 205.147.160.0/19 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 207.152.128.0/18 | No ROA covers it. Add a ROA for AS11951, maxLength 18. |
| Route object: RIR | 207.152.128.0/18 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 209.50.192.0/19 | No ROA covers it. Add a ROA for AS11951, maxLength 19. |
| Route object: RIR | 209.50.192.0/19 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS11951 whose prefix no peer sees AS11951 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 199.5.133.0/24 | RADB | No ROA |
| 207.152.133.0/24 | RADB | No ROA |
| 207.152.183.0/24 | RADB | No ROA |
| 207.152.188.0/24 | RADB | No ROA |
| 209.50.213.0/24 | ALTDB | No ROA |
| 209.50.214.0/24 | RADB | No ROA |
| 209.50.218.0/24 | 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.