Network · data from 2026-11-12
AS28251 AS28251 - Cizol Com. e Servicos de Equip de Informatica Ltda
Registry name: AS28251 - Cizol Com. e Servicos de Equip de Informatica Ltda, BR · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS28251, 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.
| 187.1.144.0/20 | No ROA | Other IRR onlyBBOI, RADB | 670 100% |
| 187.1.153.0/24 | No ROA | Other IRR onlyRADB | 670 100% |
AS-SET
AS28251 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 33 are in fix.csv.
- ROA: none2
- Route object: RIR2
- Route object: not announced29
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 187.1.144.0/20 | No ROA covers it. Add a ROA for AS28251, maxLength 20. |
| Route object: RIR | 187.1.144.0/20 | Route object only in BBOI, RADB. Add it in the RIR database for the space. |
| ROA: none | 187.1.153.0/24 | No ROA covers it. Add a ROA for AS28251, maxLength 24. |
| Route object: RIR | 187.1.153.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS28251 whose prefix no peer sees AS28251 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 187.1.144.0/21 | RADB | No ROA |
| 187.1.144.0/22 | RADB | No ROA |
| 187.1.144.0/23 | RADB | No ROA |
| 187.1.144.0/24 | RADB | No ROA |
| 187.1.145.0/24 | RADB | No ROA |
| 187.1.146.0/23 | RADB | No ROA |
| 187.1.146.0/24 | RADB | No ROA |
| 187.1.147.0/24 | RADB | No ROA |
| 187.1.148.0/22 | RADB | No ROA |
| 187.1.148.0/23 | RADB | No ROA |
| 187.1.148.0/24 | RADB | No ROA |
| 187.1.149.0/24 | RADB | No ROA |
| 187.1.150.0/23 | RADB | No ROA |
| 187.1.150.0/24 | RADB | No ROA |
| 187.1.151.0/24 | RADB | No ROA |
| 187.1.152.0/21 | RADB | No ROA |
| 187.1.152.0/22 | RADB | No ROA |
| 187.1.152.0/23 | RADB | No ROA |
| 187.1.152.0/24 | RADB | No ROA |
| 187.1.154.0/23 | RADB | No ROA |
| 187.1.154.0/24 | RADB | No ROA |
| 187.1.155.0/24 | RADB | No ROA |
| 187.1.156.0/22 | RADB | No ROA |
| 187.1.156.0/23 | RADB | No ROA |
| 187.1.156.0/24 | RADB | No ROA |
| 187.1.157.0/24 | RADB | No ROA |
| 187.1.158.0/23 | RADB | No ROA |
| 187.1.158.0/24 | RADB | No ROA |
| 187.1.159.0/24 | 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.