Network · data from 2026-11-12
AS61251 HOST4BIZ-AS Host4Biz sp. z o.o.
Registry name: HOST4BIZ-AS Host4Biz sp. z o.o., PL · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS61251, 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.
| 77.73.36.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 91.195.12.0/23 | No ROA | RIR databaseRIPE | 673 100% |
| 91.232.127.0/24 | No ROA | RIR databaseRIPE | 673 100% |
| 185.151.244.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 2a07:7c80::/29 | No ROA | RIR databaseRIPE | 633 100% |
AS-SET
AS61251 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 8 are in fix.csv.
- ROA: none5
- Route object: not announced3
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 77.73.36.0/22 | No ROA covers it. Add a ROA for AS61251, maxLength 22. |
| ROA: none | 91.195.12.0/23 | No ROA covers it. Add a ROA for AS61251, maxLength 23. |
| ROA: none | 91.232.127.0/24 | No ROA covers it. Add a ROA for AS61251, maxLength 24. |
| ROA: none | 185.151.244.0/22 | No ROA covers it. Add a ROA for AS61251, maxLength 22. |
| ROA: none | 2a07:7c80::/29 | No ROA covers it. Add a ROA for AS61251, maxLength 29. |
Route objects not announced
Route objects with origin AS61251 whose prefix no peer sees AS61251 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 185.151.244.0/23 | RIPE | No ROA |
| 185.151.245.0/24 | RIPE | No ROA |
| 185.151.246.0/23 | RIPE | 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.