Network · data from 2026-11-12
AS1742 HARVARD-UNIV - Harvard University
Registry name: HARVARD-UNIV - Harvard University, US · not in PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS1742, 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.
| 131.142.0.0/16 | No ROA | Other IRR onlyRADB | 673 100% |
| 2620:32:8000::/48 | No ROA | Other IRR onlyRADB | 636 100% |
| 65.112.0.0/20 | Valid | RIR databaseARIN, RADB | 673 100% |
| 67.134.204.0/22 | Valid | RIR databaseARIN, RADB | 673 100% |
| 128.103.0.0/16 | Valid | RIR databaseARIN, RADB | 673 100% |
| 140.247.0.0/16 | Valid | RIR databaseARIN, RADB | 673 100% |
| 192.5.66.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 192.54.223.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 192.131.102.0/24 | Valid | RIR databaseARIN, RADB | 673 100% |
| 199.94.60.0/22 | Valid | RIR databaseARIN, RADB | 659 98% |
| 2602:fca9::/36 | Valid | RIR databaseARIN, RADB | 636 100% |
| 2607:fb60::/32 | Valid | RIR databaseARIN, RADB | 636 100% |
| 2607:fb60:2404::/46 | Valid | RIR databaseARIN | 419 66% |
| 140.247.111.0/24 | Valid | RIR databaseARIN, RADB | 335 50% |
| 140.247.152.0/24 | Valid | RIR databaseARIN, RADB | 335 50% |
| 140.247.174.0/24 | Valid | RIR databaseARIN, RADB | 335 50% |
| 140.247.236.0/24 | Valid | RIR databaseARIN, RADB | 334 50% |
| 140.247.179.128/26 | Valid | RIR databaseARIN, RADB | 8 1%low visibility |
AS-SET
AS1742 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 9 are in fix.csv.
- ROA: none2
- Route object: RIR2
- Route object: not announced5
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: none | 131.142.0.0/16 | No ROA covers it. Add a ROA for AS1742, maxLength 16. |
| Route object: RIR | 131.142.0.0/16 | Route object only in RADB. Add it in the RIR database for the space. |
| ROA: none | 2620:32:8000::/48 | No ROA covers it. Add a ROA for AS1742, maxLength 48. |
| Route object: RIR | 2620:32:8000::/48 | Route object only in RADB. Add it in the RIR database for the space. |
Route objects not announced
Route objects with origin AS1742 whose prefix no peer sees AS1742 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 192.43.216.0/24 | ARIN | Valid |
| 216.52.8.0/23 | RADB | No ROA |
| 216.52.24.0/23 | RADB | No ROA |
| 216.52.72.0/22 | RADB | No ROA |
| 2607:fb60:2400::/40 | ARIN, RADB | 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.