Network · data from 2026-11-12
AS513 CERN
Registry name: CERN CERN - European Organization for Nuclear Research, CH · PeeringDB
25IPv4 routes
80.0% RPKI valid · 80.0% with a route object
11IPv6 routes
18.2% RPKI valid · 18.2% with a route object
14RPKI invalid
0 origin · 14 maxLength
0No ROA
14 with no route object for this origin
14Low visibility
seen by under 10% of full-table peers
3Route objects not announced
registered with origin AS513, seen from no peer
Announced routes
Every prefix a peer of the route collectors sees with origin AS513, 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.
| 188.184.0.0/17 | Invalid: maxLength | Nonecovered by 188.184.0.0/16 | 1 0%low visibility |
| 188.184.128.0/17 | Invalid: maxLength | Nonecovered by 188.184.0.0/16 | 1 0%low visibility |
| 188.185.0.0/17 | Invalid: maxLength | Nonecovered by 188.185.0.0/16 | 1 0%low visibility |
| 188.185.128.0/18 | Invalid: maxLength | Nonecovered by 188.185.0.0/16 | 1 0%low visibility |
| 188.185.192.0/18 | Invalid: maxLength | Nonecovered by 188.185.0.0/16 | 1 0%low visibility |
| 2001:1458:100::/44 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1458:200::/44 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1458:300::/44 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1458:901::/48 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1458:d00::/44 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1458:e000::/40 | Invalid: maxLength | Nonecovered by 2001:1458::/32 | 1 0%low visibility |
| 2001:1459:100::/44 | Invalid: maxLength | Nonecovered by 2001:1459::/32 | 1 0%low visibility |
| 2001:1459:200::/44 | Invalid: maxLength | Nonecovered by 2001:1459::/32 | 1 0%low visibility |
| 2001:1459:300::/44 | Invalid: maxLength | Nonecovered by 2001:1459::/32 | 1 0%low visibility |
| 128.141.0.0/16 | Valid | RIR databaseRIPE | 669 99% |
| 128.142.0.0/16 | Valid | RIR databaseRIPE | 669 99% |
| 137.138.0.0/16 | Valid | RIR databaseRIPE | 669 99% |
| 192.65.196.0/23 | Valid | RIR databaseRIPE | 669 99% |
| 192.91.240.0/22 | Valid | RIR databaseRIPE | 669 99% |
| 194.12.128.0/18 | Valid | RIR databaseRIPE | 669 99% |
| 185.249.56.0/22 | Valid | RIR databaseRIPE | 668 99% |
| 188.184.0.0/16 | Valid | RIR databaseRIPE | 668 99% |
| 188.185.0.0/16 | Valid | RIR databaseRIPE | 668 99% |
| 192.16.155.0/24 | Valid | RIR databaseRIPE | 668 99% |
| 192.16.156.0/22 | Valid | RIR databaseRIPE | 668 99% |
| 192.16.160.0/22 | Valid | RIR databaseRIPE | 668 99% |
| 192.16.164.0/23 | Valid | RIR databaseRIPE | 668 99% |
| 192.16.166.0/24 | Valid | RIR databaseRIPE | 668 99% |
| 192.65.183.0/24 | Valid | RIR databaseRIPE | 668 99% |
| 192.65.184.0/21 | Valid | RIR databaseRIPE | 668 99% |
| 192.65.192.0/22 | Valid | RIR databaseRIPE | 668 99% |
| 192.91.236.0/22 | Valid | RIR databaseRIPE | 668 99% |
| 192.91.244.0/23 | Valid | RIR databaseRIPE | 668 99% |
| 192.91.246.0/24 | Valid | RIR databaseRIPE | 668 99% |
| 2001:1458::/32 | Valid | RIR databaseRIPE | 631 99% |
| 2001:1459::/32 | Valid | RIR databaseRIPE | 631 99% |
AS-SET
PeeringDB's irr_as_set for AS513: RIPE::AS-CERNEXT. 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 (AS513 isn't in the set, or no route object for AS513 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 | AS513 in it | Not covered |
|---|---|---|---|---|---|
| RIPE::AS-CERNEXT | RIPE | 9 | 1 | Yes | 0 |
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: maxLength14
- Route object: none14
- Route object: not announced3
| Change | Prefix or set | Detail |
|---|---|---|
| ROA: maxLength | 188.184.0.0/17 | ROA 188.184.0.0/16 AS513 has maxLength 16; the route is a /17. Raise the maxLength, or add a ROA for 188.184.0.0/17. |
| Route object: none | 188.184.0.0/17 | No route object for it. A route object for 188.184.0.0/16 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 188.184.128.0/17 | ROA 188.184.0.0/16 AS513 has maxLength 16; the route is a /17. Raise the maxLength, or add a ROA for 188.184.128.0/17. |
| Route object: none | 188.184.128.0/17 | No route object for it. A route object for 188.184.0.0/16 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 188.185.0.0/17 | ROA 188.185.0.0/16 AS513 has maxLength 16; the route is a /17. Raise the maxLength, or add a ROA for 188.185.0.0/17. |
| Route object: none | 188.185.0.0/17 | No route object for it. A route object for 188.185.0.0/16 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 188.185.128.0/18 | ROA 188.185.0.0/16 AS513 has maxLength 16; the route is a /18. Raise the maxLength, or add a ROA for 188.185.128.0/18. |
| Route object: none | 188.185.128.0/18 | No route object for it. A route object for 188.185.0.0/16 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 188.185.192.0/18 | ROA 188.185.0.0/16 AS513 has maxLength 16; the route is a /18. Raise the maxLength, or add a ROA for 188.185.192.0/18. |
| Route object: none | 188.185.192.0/18 | No route object for it. A route object for 188.185.0.0/16 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:100::/44 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1458:100::/44. |
| Route object: none | 2001:1458:100::/44 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:200::/44 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1458:200::/44. |
| Route object: none | 2001:1458:200::/44 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:300::/44 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1458:300::/44. |
| Route object: none | 2001:1458:300::/44 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:901::/48 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /48. Raise the maxLength, or add a ROA for 2001:1458:901::/48. |
| Route object: none | 2001:1458:901::/48 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:d00::/44 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1458:d00::/44. |
| Route object: none | 2001:1458:d00::/44 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1458:e000::/40 | ROA 2001:1458::/32 AS513 has maxLength 32; the route is a /40. Raise the maxLength, or add a ROA for 2001:1458:e000::/40. |
| Route object: none | 2001:1458:e000::/40 | No route object for it. A route object for 2001:1458::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1459:100::/44 | ROA 2001:1459::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1459:100::/44. |
| Route object: none | 2001:1459:100::/44 | No route object for it. A route object for 2001:1459::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1459:200::/44 | ROA 2001:1459::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1459:200::/44. |
| Route object: none | 2001:1459:200::/44 | No route object for it. A route object for 2001:1459::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
| ROA: maxLength | 2001:1459:300::/44 | ROA 2001:1459::/32 AS513 has maxLength 32; the route is a /44. Raise the maxLength, or add a ROA for 2001:1459:300::/44. |
| Route object: none | 2001:1459:300::/44 | No route object for it. A route object for 2001:1459::/32 with origin AS513 covers it (filters allowing more-specifics accept it). Add a route object with origin AS513 in the RIR database for the space. |
Route objects not announced
Route objects with origin AS513 whose prefix no peer sees AS513 announce. Many are kept on purpose (backup routes, space announced only in some places).
| 188.184.0.0/15 | RIPE | No ROA |
| 188.185.32.0/20 | RIPE | Invalid: maxLength |
| 188.185.64.0/18 | RIPE | Invalid: maxLength |
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.