CERN - European Organization for Nuclear Research
Data as of 2026-09-06
BGP inherited
This organisation
| Netblocks | 66 · 354,816 IPv4 addresses |
| IPv6 | 5 prefixes (largest 2001:1458::/31) |
| Record ID | 236233839 |
| Registry | BGP |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 10 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (66)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 128.141.0.0/16 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 128.142.0.0/16 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 137.138.0.0/16 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 185.249.56.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 188.184.0.0/16 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 188.185.0.0/16 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.16.155.0/24 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.16.156.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.16.160.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.16.164.0/23 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.16.166.0/24 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.65.183.0/24 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.65.184.0/21 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.65.192.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.65.196.0/23 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.91.236.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.91.240.0/22 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.91.244.0/23 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 192.91.246.0/24 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 194.12.128.0/18 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 2001:67c:2c4::/48 | CERN - European Organization for Nuclear Research | RIPE | ASSIGNED PI | ● high |
| 2001:1458::/32 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 2001:1459::/32 | CERN - European Organization for Nuclear Research | BGP | ANNOUNCED | ● high |
| 128.141.0.0 – 128.142.255.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 188.184.0.0/15 | CERN - European Organization for Nuclear Research | RIPE | ALLOCATED PA | ● low |
| 192.16.155.0 – 192.16.166.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.156.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.157.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.158.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.158.0 – 192.16.164.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.159.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.160.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.161.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.162.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.163.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.164.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.16.165.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.183.0 – 192.65.197.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.184.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.185.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.186.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.187.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.188.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.189.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.190.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.191.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.192.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.193.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.193.0 – 192.65.197.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.194.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.195.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.196.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.65.197.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.236.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.236.0 – 192.91.246.255 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.237.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.238.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.239.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.240.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.241.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.242.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.243.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.244.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 192.91.245.0/24 | CERN - European Organization for Nuclear Research | RIPE | LEGACY | ● low |
| 2001:7f8:1c::/48 | CERN - European Organization for Nuclear Research | RIPE | ASSIGNED PI | ● low |
| 2001:1458::/31 | CERN - European Organization for Nuclear Research | RIPE | ALLOCATED-BY-RIR | ● low |
IPv6 ranges (5)
Footprint over time
11 weekly snapshots · JSON
76
0 netblocks since 2026-07-05
2026-07-05
peak 76
2026-09-06
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: B
how networks compare →
86.8%
of checked blocks have valid RPKI ROA coverage
(66 of 76)
No discrepancies found among checked blocks.
NIC Handles
AS513
CERN-MNT
CERN-MNT
DUMY-RIPE
DUMY-RIPE
ORG-CEOf1-RIPE
RIPE-NCC-END-MNT
RIPE-NCC-HM-MNT
RIPE-NCC-LEGACY-MNT
USLHCNET-MNT