AS513

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Summary

IP address summary information
Name	CERN - European Organization for Nuclear Research
Country	Switzerland
Website	host.io/home.cern·home.cern
Hosted domains	324
IPv4 addresses	354,816
IPv6 addresses	1.58 × 10²⁹
ASN type	Education
Registry	RIPE
Allocated	25 years ago on Oct 22, 2001
Updated	4 years ago on Feb 17, 2022

Ranking

#3,256

Overall rank

among 74,951 networks

Traffic

#2,932

Infrastructure

#3,141

#25inSwitzerland

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

Switzerland
100%

Held location over 90 days: 90%
Held location over 1 year: 93%
Median days between moves: 43 days
Geolocation scope: National

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
128.141.0.0/16	CERN - European Organization for Nuclear Research	65,536
128.142.0.0/16	CERN - European Organization for Nuclear Research	65,536
137.138.0.0/16	CERN - European Organization for Nuclear Research	65,536
188.184.0.0/16	CERN - European Organization for Nuclear Research	65,536
188.185.0.0/16	CERN - European Organization for Nuclear Research	65,536
194.12.128.0/18	CERN - European Organization for Nuclear Research	16,384
192.65.184.0/21	CERN - European Organization for Nuclear Research	2,048
185.249.56.0/22	CERN - European Organization for Nuclear Research	1,024
192.16.156.0/22	CERN - European Organization for Nuclear Research	1,024
192.16.160.0/22	CERN - European Organization for Nuclear Research	1,024

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 324 domain names hosted across 76 IP addresses on this ASN.

IP Address	Domain	Count
137.138.6.31		49
188.184.76.40		43
137.138.226.190		37
188.184.76.146		27
188.184.67.127		16

Places

IPs in this network linked to physical places, based on their Wi-Fi networks.

Places IPs603
Museum471
Convenience Store114
Business Services15

Category	In AS513	Example IP
Museum	471	128.141.0.220
Convenience Store	114	128.141.12.128
Business Services	15

Places

Peers

There are 50 peers for this ASN.

ASN	Name	Rank

Upstreams

There are 6 upstreams for this ASN.

ASN	Name	Rank
AS174	Cogent Communications, LLC
AS6730	Sunrise GmbH
AS6939	Hurricane Electric LLC
AS21320	GEANT Vereniging
AS25091	IP-Max SA
AS29222	Infomaniak

Downstreams

There are 5 downstreams for this ASN.

ASN	Name	Rank
AS12654	Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS20940	Akamai International B.V.
AS21449	Etat de Geneve
AS28810	World Health Organization (WHO)
AS48751	United Nations Logistics Base

Pingable IPs

402 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more

IP Address	ASN	Details
128.142.249.50 Ping	AS513CERN - European Organization for Nuclear Research	0.93ms from Geneve, CH
188.184.88.24 Ping	AS513CERN - European Organization for Nuclear Research	1.08ms from Geneve, CH
137.138.122.123 Ping	AS513CERN - European Organization for Nuclear Research	1.11ms from Geneve, CH
188.184.86.225 Ping	AS513CERN - European Organization for Nuclear Research	1.21ms from Geneve, CH
188.185.132.22 Ping	AS513CERN - European Organization for Nuclear Research	1.03ms from Geneve, CH
128.142.50.11 Ping	AS513CERN - European Organization for Nuclear Research	1.05ms from Geneve, CH
188.185.140.96 Ping	AS513CERN - European Organization for Nuclear Research	1.04ms from Geneve, CH
188.184.118.24 Ping	AS513CERN - European Organization for Nuclear Research	1.03ms from Geneve, CH
188.185.84.86 Ping	AS513CERN - European Organization for Nuclear Research	1.15ms from Geneve, CH
137.138.157.0 Ping	AS513CERN - European Organization for Nuclear Research	1.04ms from Geneve, CH

Other Pingable IPs

IP Address	ASN	Details

Pingable IPs

Important routers in AS513


192.65.185.139	Geneva, Switzerland
192.65.185.228	Geneva, Switzerland
192.65.185.242	Geneva, Switzerland
192.65.185.165	Geneva, Switzerland
192.65.185.244	Lausanne, Switzerland
192.65.185.130	Geneva, Switzerland
192.65.185.119	Geneva, Switzerland
192.91.240.227	Geneva, Switzerland
192.91.240.226	Geneva, Switzerland
192.91.240.225	Geneva, Switzerland

Important routers in AS513

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.Traceroute →

$ traceroute -a -n -q1 -f2 -m13 188.185.139.18

traceroute to 188.185.139.18 (188.185.139.18): 13 hops max, 52 byte packets

2 [AS174] 149.14.92.105 1.128 ms

3 [AS174] 154.54.59.49 2.09 ms

4 [AS174] 154.54.56.174 9.283 ms

5 [AS174] 154.54.60.166 16.197 ms

6 [AS174] 154.54.57.34 18.873 ms

7 [AS174] 154.25.10.110 18.55 ms

8 [AS174] 149.6.54.2 17.246 ms

9 [AS513] 192.65.184.190 17.591 ms

10 [AS513] 192.65.184.221 17.985 ms

11 *

12 *

13 *

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On October 22, 2026

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS513 at robtex.

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AS513

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS513

Important routers in AS513

Traceroute

Related Networks

AS205959

AS213081

AS215808

AS24674

AS29356

What is an ASN?

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Traceroute

Ranking

Important routers in AS513

Geolocation

Countries by IPv4 share

Pingable IPs

Other Pingable IPs

Activity

IP Ranges

Places

AS205959

AS213081

AS215808

AS24674

AS29356

AS3086