Network · data from 2026-11-12
AS39588 MIMECAST-DE Mimecast Services Limited
Registry name: MIMECAST-DE Mimecast Services Limited, GB · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS39588, 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.
| 41.74.203.0/24 | No ROA | Other IRR onlyRADB, RIPE-NONAUTH | 225 33% |
| 62.140.7.0/24 | No ROA | RIR databaseRADB, RIPE | 673 100% |
| 62.140.10.0/24 | No ROA | RIR databaseRADB, RIPE | 673 100% |
| 170.10.142.0/24 | Valid | Other IRR onlyRADB | 203 30% |
| 51.163.158.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 51.163.159.0/24 | Valid | RIR databaseRIPE | 673 100% |
| 147.28.34.0/24 | Valid | RIR databaseRADB, RIPE | 673 100% |
| 147.28.35.0/24 | Valid | RIR databaseRADB, RIPE | 673 100% |
| 194.104.108.0/23 | Valid | RIR databaseRADB, RIPE | 673 100% |
| 194.104.110.0/23 | Valid | RIR databaseRADB, RIPE | 673 100% |
| 2a02:5be0:2::/48 | Valid | RIR databaseRIPE | 635 100% |
| 2a02:5be0:3::/48 | Valid | RIR databaseRADB, RIPE | 635 100% |
| 216.145.218.0/24 | Valid | RIR databaseARIN, RADB | 230 34% |
| 216.145.222.0/24 | Valid | RIR databaseARIN, RADB | 230 34% |
AS-SET
AS39588 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 13 are in fix.csv.
- ROA: none3
- Route object: RIR2
- Route object: not announced8
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 41.74.203.0/24 | No ROA covers it. Add a ROA for AS39588, maxLength 24. |
| Route object: RIR | 41.74.203.0/24 | Route object only in RADB, RIPE-NONAUTH. Add it in the RIR database for the space. |
| ROA: none | 62.140.7.0/24 | No ROA covers it. Add a ROA for AS39588, maxLength 24. |
| ROA: none | 62.140.10.0/24 | No ROA covers it. Add a ROA for AS39588, maxLength 24. |
| Route object: RIR | 170.10.142.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS39588 whose prefix no peer sees AS39588 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 89.202.105.64/26 | RIPE | Invalid: origin |
| 147.28.37.0/24 | RIPE | Valid |
| 194.104.108.0/24 | RIPE | Invalid: maxLength |
| 194.104.109.0/24 | RIPE | Invalid: maxLength |
| 194.104.110.0/24 | RIPE | Invalid: maxLength |
| 194.104.111.0/24 | RIPE | Invalid: maxLength |
| 2a02:5be0:5::/48 | RIPE | Invalid: origin |
| 2a02:5be0:7::/48 | 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.