AS513
European Organization for Nuclear Research
Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Enterprise allocation +4
- Trust score 69 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
About CERN
The European Organization for Nuclear Research, known as CERN, is an intergovernmental organization that operates the largest particle physics laboratory in the world. Established in 1954, it is based in Meyrin, a western suburb of Geneva, on the France–Switzerland border.
Network profile
Source: PeeringDB →Present at 1 internet exchange: CIXP
Top CIDR ranges
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS513 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 188.184.0.0/16 | 9,804 | 2026-07-22 22:45:34 |
| 192.16.166.0/24 | 9,798 | 2026-07-22 22:45:34 |
| 192.65.184.0/21 | 9,792 | 2026-07-22 22:45:34 |
| 192.65.183.0/24 | 9,784 | 2026-07-22 22:45:31 |
| 128.142.0.0/16 | 9,780 | 2026-07-22 22:45:34 |
| 194.12.128.0/18 | 9,772 | 2026-07-22 22:45:31 |
| 137.138.0.0/16 | 9,760 | 2026-07-22 22:45:34 |
| 192.16.155.0/24 | 9,742 | 2026-07-22 22:45:34 |
| 192.16.160.0/22 | 9,728 | 2026-07-22 22:45:34 |
| 192.91.236.0/22 | 9,727 | 2026-07-22 22:45:34 |
| 185.249.56.0/22 | 9,726 | 2026-07-22 22:45:34 |
| 192.91.240.0/22 | 9,726 | 2026-07-22 22:45:34 |
| 192.16.164.0/23 | 9,722 | 2026-07-22 22:45:34 |
| 128.141.0.0/16 | 9,714 | 2026-07-22 22:45:34 |
| 192.65.196.0/23 | 9,651 | 2026-07-22 22:45:34 |
| 192.91.246.0/24 | 9,638 | 2026-07-22 22:45:34 |
| 188.185.0.0/16 | 9,637 | 2026-07-22 22:45:34 |
| 192.16.156.0/22 | 9,593 | 2026-07-22 22:45:34 |
| 192.91.244.0/23 | 9,586 | 2026-07-22 22:45:34 |
| 192.65.192.0/22 | 9,557 | 2026-07-22 22:45:34 |
| 188.184.128.0/17 | 1 | 2026-05-29 21:15:16 |
| 188.185.192.0/18 | 1 | 2026-05-29 21:15:16 |
| 188.184.0.0/17 | 1 | 2026-05-29 21:15:16 |
| 188.185.128.0/18 | 1 | 2026-05-29 21:15:16 |
| 188.185.0.0/17 | 1 | 2026-05-29 21:15:16 |
Frequently Asked Questions
What is AS513?
AS513 is an Autonomous System Number assigned to European Organization for Nuclear Research. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS513 announce?
AS513 announces 354.8K IPv4 addresses distributed across 19 routed CIDR prefixes. The network is registered in Switzerland.
Who operates AS513?
AS513 is operated by European Organization for Nuclear Research. The organization is based in Switzerland. You can view all IP ranges and related ASNs on the organization page.
What country is AS513 registered in?
AS513 is registered in Switzerland. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
