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	301
IPv4 addresses	354,816
IPv6 addresses	1.58 × 10²⁹
ASN type	Education
Registry	RIPE
Allocated	24 years ago on Oct 22, 2001
Updated	4 years ago on Feb 17, 2022

Ranking

#2,893

Overall rank

among 42,371 networks

Traffic

#2,659

Infrastructure

#2,776

#22inSwitzerland

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

Switzerland
100%

Held location over 90 days: 92%
Held location over 1 year: 95%
Median days between moves: 47 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

Tue

Wed

Thu

Fri

Sat

Sun

Times shown in Switzerland local time (UTC+1).LessMore

Peak hour: 23:00–00:00
Active hours: 13 hrs
Weekend vs weekday: weekdays heavier
Busiest day: Wed
Network type: Education
Geography: Switzerland

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 301 domain names hosted across 58 IP addresses on this ASN.

IP Address	Domain	Count
188.184.76.146		48
137.138.6.31		46
188.184.76.40		43
188.184.67.127		17
137.138.226.190		16

Places

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

Places IPs269
Museum86
Real Estate62
Music Venue26

Category	In AS513	Example IP
Museum	86	128.141.10.16
Real Estate	62	128.141.12.128
Music Venue	26	194.12.129.17
Library	24	194.12.131.217
Sports Center	18	194.12.139.16

New

IPinfo Places identifies hotels, airports, stadiums, and more with building-level precision.

Explore Places

Places

Peers

There are 50 peers for this ASN.

ASN	Name	Rank
AS42	WoodyNet, Inc.
AS174	Cogent Communications, LLC
AS293	ESnet
AS559	SWITCH
AS1103	SURF B.V.
AS1239	Cogent Communications, LLC
AS2018	TENET (The UNINET Project)
AS2027	MilkyWan Association
AS2200	Renater
AS2603	NORDUnet

Upstreams

There are 5 upstreams for this ASN.

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

Downstreams

There are 7 downstreams for this ASN.

ASN	Name	Rank
AS174	Cogent Communications, LLC
AS6939	Hurricane Electric LLC
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

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

IP Address	ASN	Details
188.184.3.3 Ping	AS513CERN - European Organization for Nuclear Research	1.44ms from Geneve, CH
137.138.54.186 Ping	AS513CERN - European Organization for Nuclear Research	1.15ms from Geneve, CH
188.185.237.131 Ping	AS513CERN - European Organization for Nuclear Research	2.13ms from Geneve, CH
188.185.77.156 Ping	AS513CERN - European Organization for Nuclear Research	1.13ms from Geneve, CH
188.185.102.26 Ping	AS513CERN - European Organization for Nuclear Research	1.20ms from Geneve, CH
128.142.197.59 Ping	AS513CERN - European Organization for Nuclear Research	0.97ms from Geneve, CH
188.184.128.3 Ping	AS513CERN - European Organization for Nuclear Research	2.18ms from Geneve, CH
137.138.120.20 Ping	AS513CERN - European Organization for Nuclear Research	1.17ms from Geneve, CH
188.185.70.215 Ping	AS513CERN - European Organization for Nuclear Research	1.08ms from Geneve, CH
188.185.63.24 Ping	AS513CERN - European Organization for Nuclear Research	1.31ms 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
192.65.185.165	Geneva, Switzerland
192.65.185.242	Geneva, Switzerland
192.65.185.244	Geneva, Switzerland
192.65.185.142	Geneva, Switzerland
192.91.240.227	Geneva, Switzerland
192.65.185.229	Geneva, Switzerland
192.91.240.225	Geneva, Switzerland
192.91.240.226	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 -f5 -m15 188.185.243.127

traceroute to 188.185.243.127 (188.185.243.127): 15 hops max, 52 byte packets

5 [AS174] 38.142.221.209 1.917 ms

6 [AS174] 154.54.28.29 2.084 ms

7 [AS174] 154.54.47.166 80.708 ms

8 [AS174] 154.54.36.166 87.503 ms

9 [AS174] 154.54.57.34 89.461 ms

10 [AS174] 154.25.10.110 90.208 ms

11 [AS174] 149.6.54.2 89.873 ms

12 [AS513] 192.65.184.81 90.063 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On July 12, 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.

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

AS16221

AS203730

AS208682

AS215852

AS25031

AS29166

What is an ASN?

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Summarize IPs

Traceroute

Pingable IPs

Other Pingable IPs

Ranking

Activity

IP Ranges

Places

Important routers in AS513

AS16221

AS203730

AS208682

AS215852

AS25031

AS29166

Geolocation

Countries by IPv4 share