Network · data from 2026-11-12
AS47720 Cork Internet Exchange
Registry name: CIX-AS Cork Internet Exchange Limited, IE · PeeringDB
Announced routes
Every prefix a peer of the route collectors sees with origin AS47720, 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.
| 45.140.144.0/24 | Invalid: origin | None | 4 1%low visibility |
| 217.74.48.0/20 | No ROA | None | 673 100% |
| 89.31.168.0/21 | No ROA | RIR databaseRIPE | 673 100% |
| 91.223.9.0/24 | No ROA | RIR databaseRIPE | 673 100% |
| 185.49.60.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 185.57.116.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 185.175.168.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 185.176.0.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 217.74.48.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 217.74.52.0/22 | No ROA | RIR databaseRIPE | 673 100% |
| 217.74.56.0/21 | No ROA | RIR databaseRIPE | 673 100% |
| 185.137.20.0/22 | No ROA | RIR databaseRIPE | 668 99% |
| 84.39.232.0/21 | No ROA | RIR databaseRIPE | 662 98% |
| 91.103.0.0/21 | No ROA | RIR databaseRIPE | 662 98% |
| 2a02:2078::/32 | No ROA | RIR databaseRIPE | 634 100% |
| 2a02:5b20::/32 | No ROA | RIR databaseRIPE | 634 100% |
| 2607:6b80:3d::/48 | Valid | RIR databaseARIN | 634 100% |
AS-SET
PeeringDB's irr_as_set for AS47720: AS47720:AS-CIX. Expanded from the day's IRR dumps the way bgpq4 does against whois.radb.net: a name with a database is read from that database only, one without from the first database in RADB's order. "Not covered" = this network's own routes that a filter built from the set would leave out (AS47720 isn't in the set, or no route object for AS47720 covers the route; more-specifics of a route object are accepted down to /24 and /48, as with bgpq4 -A -R 24 / -R 48). Customers' routes aren't counted: the collectors show each route's origin, not which network it came through.
| Name | Database | ASNs | Sets | AS47720 in it | Not covered |
|---|---|---|---|---|---|
| AS47720:AS-CIX | RIPE | 14 | 1 | Yes | 2 |
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 18 are in fix.csv.
- ROA: origin1
- ROA: none15
- Route object: none2
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: origin | 45.140.144.0/24 | An AS0 ROA covers it (the holder's statement that it shouldn't be routed). If AS47720 should announce it, add a ROA for AS47720. |
| Route object: none | 45.140.144.0/24 | No route object for it. Add a route object with origin AS47720 in the RIR database for the space. |
| ROA: none | 217.74.48.0/20 | No ROA covers it. Add a ROA for AS47720, maxLength 20. |
| Route object: none | 217.74.48.0/20 | No route object for it. Add a route object with origin AS47720 in the RIR database for the space. |
| ROA: none | 89.31.168.0/21 | No ROA covers it. Add a ROA for AS47720, maxLength 21. |
| ROA: none | 91.223.9.0/24 | No ROA covers it. Add a ROA for AS47720, maxLength 24. |
| ROA: none | 185.49.60.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 185.57.116.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 185.175.168.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 185.176.0.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 217.74.48.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 217.74.52.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 217.74.56.0/21 | No ROA covers it. Add a ROA for AS47720, maxLength 21. |
| ROA: none | 185.137.20.0/22 | No ROA covers it. Add a ROA for AS47720, maxLength 22. |
| ROA: none | 84.39.232.0/21 | No ROA covers it. Add a ROA for AS47720, maxLength 21. |
| ROA: none | 91.103.0.0/21 | No ROA covers it. Add a ROA for AS47720, maxLength 21. |
| ROA: none | 2a02:2078::/32 | No ROA covers it. Add a ROA for AS47720, maxLength 32. |
| ROA: none | 2a02:5b20::/32 | No ROA covers it. Add a ROA for AS47720, maxLength 32. |
Route objects not announced
Every route object with origin AS47720 is announced.
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.