Network · data from 2026-11-12
AS19721 MHN - Magellan Health Services
Registry name: MHN - Magellan Health Services, US · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS19721, 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.
| 204.193.84.0/22 | No ROA | Nonecovered by 204.193.80.0/20 | 673 100% |
| 204.193.84.0/24 | No ROA | Nonecovered by 204.193.80.0/20 | 673 100% |
| 204.193.85.0/24 | No ROA | Nonecovered by 204.193.80.0/20 | 673 100% |
| 204.193.86.0/23 | No ROA | Nonecovered by 204.193.80.0/20 | 673 100% |
| 204.193.64.0/19 | No ROA | RIR databaseARIN, RADB | 673 100% |
| 204.193.64.0/20 | No ROA | RIR databaseARIN, RADB | 673 100% |
| 204.193.80.0/20 | No ROA | RIR databaseARIN, RADB | 673 100% |
| 204.193.71.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.72.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.74.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.75.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.80.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.88.0/24 | No ROA | RIR databaseARIN | 671 100% |
| 204.193.93.0/24 | No ROA | RIR databaseARIN | 671 100% |
AS-SET
AS19721 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 23 are in fix.csv.
- ROA: none14
- Route object: none4
- Route object: not announced5
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 204.193.84.0/22 | No ROA covers it. Add a ROA for AS19721, maxLength 22. |
| Route object: none | 204.193.84.0/22 | No route object for it. A route object for 204.193.80.0/20 with origin AS19721 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19721 in the RIR database for the space. |
| ROA: none | 204.193.84.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| Route object: none | 204.193.84.0/24 | No route object for it. A route object for 204.193.80.0/20 with origin AS19721 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19721 in the RIR database for the space. |
| ROA: none | 204.193.85.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| Route object: none | 204.193.85.0/24 | No route object for it. A route object for 204.193.80.0/20 with origin AS19721 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19721 in the RIR database for the space. |
| ROA: none | 204.193.86.0/23 | No ROA covers it. Add a ROA for AS19721, maxLength 23. |
| Route object: none | 204.193.86.0/23 | No route object for it. A route object for 204.193.80.0/20 with origin AS19721 covers it (filters allowing more-specifics accept it). Add a route object with origin AS19721 in the RIR database for the space. |
| ROA: none | 204.193.64.0/19 | No ROA covers it. Add a ROA for AS19721, maxLength 19. |
| ROA: none | 204.193.64.0/20 | No ROA covers it. Add a ROA for AS19721, maxLength 20. |
| ROA: none | 204.193.80.0/20 | No ROA covers it. Add a ROA for AS19721, maxLength 20. |
| ROA: none | 204.193.71.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.72.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.74.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.75.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.80.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.88.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
| ROA: none | 204.193.93.0/24 | No ROA covers it. Add a ROA for AS19721, maxLength 24. |
Route objects not announced
Route objects with origin AS19721 whose prefix no peer sees AS19721 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 204.193.70.0/24 | ARIN | No ROA |
| 204.193.73.0/24 | ARIN | No ROA |
| 204.193.76.0/24 | ARIN | No ROA |
| 204.193.81.0/24 | ARIN | No ROA |
| 204.193.90.0/23 | ARIN | 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.