Network · data from 2026-11-12
AS30031 MIMECAST-US - Mimecast North America Inc
Registry name: MIMECAST-US - Mimecast North America Inc, US · not in PeeringDB
21IPv4 routes
71.4% RPKI valid · 95.2% with a route object
5IPv6 routes
100.0% RPKI valid · 100.0% with a route object
0RPKI invalid
0 origin · 0 maxLength
6No ROA
1 with no route object for this origin
0Low visibility
seen by under 10% of full-table peers
10Route objects not announced
registered with origin AS30031, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS30031, 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.
| 63.128.21.0/24 | No ROA | Other IRR onlyRADB | 673 100% |
| 205.139.110.0/24 | No ROA | Other IRR onlyRADB | 673 100% |
| 205.139.111.0/24 | No ROA | Other IRR onlyRADB | 673 100% |
| 207.211.30.0/24 | No ROA | Other IRR onlyRADB | 673 100% |
| 216.205.24.0/24 | No ROA | Other IRR onlyRADB | 673 100% |
| 41.74.203.0/24 | No ROA | Other IRR onlyRADB | 200 30% |
| 170.10.140.0/24 | Valid | None | 672 100% |
| 170.10.150.0/24 | Valid | Other IRR onlyRADB | 673 100% |
| 170.10.151.0/24 | Valid | Other IRR onlyRADB | 673 100% |
| 170.10.152.0/24 | Valid | Other IRR onlyRADB | 673 100% |
| 170.10.153.0/24 | Valid | Other IRR onlyRADB | 673 100% |
| 2620:134:6008::/48 | Valid | Other IRR onlyRADB | 635 100% |
| 2620:134:6009::/48 | Valid | Other IRR onlyRADB | 635 100% |
| 2620:134:6002::/48 | Valid | Other IRR onlyRADB | 634 100% |
| 170.10.142.0/24 | Valid | Other IRR onlyRADB | 121 18% |
| 170.10.128.0/23 | Valid | RIR databaseARIN, RADB | 673 100% |
| 170.10.130.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 170.10.131.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 170.10.132.0/23 | Valid | RIR databaseARIN, RADB | 673 100% |
| 170.10.156.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 170.10.157.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 216.145.219.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 2620:134:6001::/48 | Valid | RIR databaseARIN | 635 100% |
| 2620:134:6000::/48 | Valid | RIR databaseARIN, RADB | 634 100% |
| 216.145.218.0/24 | Valid | RIR databaseARIN, RADB | 200 30% |
| 216.145.222.0/24 | Valid | RIR databaseARIN, RADB | 200 30% |
AS-SET
AS30031 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 31 are in fix.csv.
- ROA: none6
- Route object: none1
- Route object: RIR14
- Route object: not announced10
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 63.128.21.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 63.128.21.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 205.139.110.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 205.139.110.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 205.139.111.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 205.139.111.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 207.211.30.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 207.211.30.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 216.205.24.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 216.205.24.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 41.74.203.0/24 | No ROA covers it. Add a ROA for AS30031, maxLength 24. |
| Route object: RIR | 41.74.203.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: none | 170.10.140.0/24 | No route object for it. Add a route object with origin AS30031 in the RIR database for the space. |
| Route object: RIR | 170.10.150.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 170.10.151.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 170.10.152.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 170.10.153.0/24 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 2620:134:6008::/48 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 2620:134:6009::/48 | Route object only in RADB. Add it in the RIR database for the space. |
| Route object: RIR | 2620:134:6002::/48 | Route object only in RADB. Add it in the RIR database for the space. |
| 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 AS30031 whose prefix no peer sees AS30031 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 147.28.39.0/24 | RIPE | Invalid: origin |
| 170.10.150.0/23 | RADB | No ROA |
| 170.10.152.0/23 | RADB | No ROA |
| 170.10.154.0/24 | RADB | No ROA |
| 170.10.155.0/24 | RADB | No ROA |
| 193.7.207.0/24 | RIPE | Invalid: origin |
| 194.104.111.0/24 | RIPE | Invalid: origin |
| 216.145.221.0/24 | ARIN, RADB | Valid |
| 2620:134:600b::/48 | ARIN | Valid |
| 2a02:5be0:9::/48 | RIPE | Invalid: origin |
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.