Network · data from 2026-11-12
AS50398 FASTCOMMUNICATIONS
Registry name: FASTCOMMUNICATIONS Fast Communication, s.r.o., CZ · PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS50398, 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.
| 91.245.0.0/21 | No ROA | None | 673 100% |
| 91.219.44.0/22 | Valid | RIR databaseRIPE | 673 100% |
| 91.245.0.0/22 | Valid | RIR databaseRIPE | 673 100% |
| 91.245.4.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 91.245.5.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 91.245.6.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 91.245.7.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 2001:67c:1260::/48 | Valid | RIR databaseRIPE | 635 100% |
AS-SET
AS50398'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 8 are in fix.csv.
- ROA: none1
- Route object: none1
- Route object: not announced6
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 91.245.0.0/21 | No ROA covers it. Add a ROA for AS50398, maxLength 21. |
| Route object: none | 91.245.0.0/21 | No route object for it. Add a route object with origin AS50398 in the RIR database for the space. |
Route objects not announced
Route objects with origin AS50398 whose prefix no peer sees AS50398 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 91.245.0.0/24 | RIPE | Valid |
| 91.245.1.0/24 | RIPE | Valid |
| 91.245.2.0/24 | RIPE | Valid |
| 91.245.3.0/24 | RIPE | Valid |
| 91.245.4.0/23 | RIPE | No ROA |
| 91.245.6.0/23 | RIPE | 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.