137.138.0.0/16

AS513 · CERN - European Organization for Nuclear Research

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Summary

Country	Switzerland
Domain	cern.ch
ASN	AS513
Registry	RIPE
ID	CERN-GPN

WHOIS Details

inetnum:        137.138.0.0 - 137.138.255.255
netname:        CERN-GPN
descr:          CERN Campus Network
descr:          CH-1211 Geneva 23, Switzerland
country:        CH
org:            ORG-CEOf1-RIPE
admin-c:        CERN513
tech-c:         CERN513
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         CERN-MNT
mnt-routes:     CERN-MNT
mnt-domains:    CERN-MNT
mnt-irt:        IRT-CERN-CERT
notify:         extip@cern.ch
created:        1970-01-01T00:00:00Z
last-modified:  2016-04-14T08:31:12Z
source:         RIPE
abuse-email:    abuse@cern.ch
abuse-c:        CERN513
abuse-org:      ORG-CEOf1-RIPE

organisation:   ORG-CEOf1-RIPE
org-name:       CERN - European Organization for Nuclear Research
country:        CH
org-type:       LIR
address:        CERN
address:        CH-1211
address:        Geneva 23
address:        SWITZERLAND
phone:          +41 22 76 72613
e-mail:         extip@cern.ch
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         CERN513
abuse-c:        CERN513
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CERN-MNT
notify:         extip@cern.ch
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CERN-MNT
created:        2004-04-17T11:02:00Z
last-modified:  2021-06-29T07:00:23Z
source:         RIPE
abuse-email:    abuse@cern.ch
abuse-c:        CERN513
abuse-org:      undefined

role:           CERN NOC
address:        CERN - European Organization for Nuclear Research
address:        Network Operation Center
address:        IT Department - CS group
address:        CH-1211 Geneva 23 - Switzerland
phone:          +41227675011
fax-no:         +41227677155
e-mail:         noc@cern.ch
remarks:        trouble: ------------------------------------------
remarks:        trouble: Operational issues: <noc@cern.ch>
remarks:        trouble: Peering issues: <extip@cern.ch>
remarks:        trouble: CIXP issues: <cixp.support@cern.ch>
remarks:        trouble: Abuse and SPAM: <abuse@cern.ch>
remarks:        trouble: ------------------------------------------
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         EM1969
tech-c:         DGR6-RIPE
nic-hdl:        CERN513
mnt-by:         CERN-MNT
notify:         extip@cern.ch
abuse-mailbox:  abuse@cern.ch
created:        2015-04-14T08:36:32Z
last-modified:  2025-09-08T15:31:38Z
source:         RIPE

route:          137.138.0.0/16
descr:          CERN-LAN1
origin:         AS513
org:            ORG-CEOf1-RIPE
mnt-by:         CERN-MNT
mnt-lower:      CERN-MNT
mnt-routes:     CERN-MNT
notify:         extip@cern.ch
created:        1970-01-01T00:00:00Z
last-modified:  2015-08-12T12:24:42Z
source:         RIPE

organisation:   ORG-CEOf1-RIPE
org-name:       CERN - European Organization for Nuclear Research
country:        CH
org-type:       LIR
address:        CERN
address:        CH-1211
address:        Geneva 23
address:        SWITZERLAND
phone:          +41 22 76 72613
e-mail:         extip@cern.ch
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         CERN513
abuse-c:        CERN513
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CERN-MNT
notify:         extip@cern.ch
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CERN-MNT
created:        2004-04-17T11:02:00Z
last-modified:  2021-06-29T07:00:23Z
source:         RIPE
abuse-email:    abuse@cern.ch
abuse-c:        CERN513
abuse-org:      undefined

Nearby Ranges

BGP prefixes that overlap with 137.0.0.0/8

Range	ASN	Company	Num of IPs
137.176.0.0/13	AS11003	The Procter and Gamble Company	524,288
137.18.0.0/16	AS1999	U.S. House of Representatives	65,536
137.160.0.0/16	AS16509	Amazon.com, Inc.	65,536
137.114.0.0/16	AS16509	Amazon Technologies Inc.	65,536
137.113.0.0/16	AS19464	Washington & Lee University	65,536
137.28.0.0/16	AS19184	University of Wisconsin - Eau Claire	65,536
137.208.0.0/16	AS1776	Welthandelsplatz 1	65,536
137.87.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.86.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.74.0.0/16	AS16276	OVH SAS	65,536
137.58.0.0/16	AS158	Telefonaktiebolaget LM Ericsson	65,536
137.194.0.0/16	AS1712	Télécom Paris	65,536
137.51.0.0/16	AS1906	Northrop Grumman Corp.	65,536
137.19.0.0/16	AS16509	Amazon.com, Inc.	65,536
137.40.0.0/16	AS18071	Panasonic Information Systems Co., Ltd	65,536
137.61.0.0/16	AS15991	IT/GITS	65,536
137.202.0.0/16	AS13541	Siemens Industry Software Inc.	65,536
137.192.0.0/16	AS1347	Inteliquent, inc.	65,536
137.230.0.0/16	AS14381	Caterpillar, Inc.	65,536
137.99.0.0/16	AS13796	University of Connecticut	65,536
137.79.0.0/16	AS127	National Aeronautics and Space Administration	65,536
137.85.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.88.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.89.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.17.0.0/16	AS1136	National Aerospace Laboratory	65,536
137.90.0.0/16	AS14977	Wyoming Higher Education Computer Network	65,536
137.216.0.0/16	AS11607	South Dakota State University	65,536
137.185.0.0/16	AS11003	The Procter and Gamble Company	65,536
137.207.0.0/16	AS11700	University of Windsor	65,536
137.16.0.0/16	AS16509	Amazon.com, Inc.	65,536
137.94.0.0/16	AS19737	Royal Military College of Canada	65,536
137.204.0.0/16	AS137	UNI-Bologna	65,536
137.188.0.0/16	AS12079	Verizon Wireless	65,536
137.53.0.0/16	AS11995	Oregon Health & Science University	65,536
137.120.0.0/16	AS1103	P.O.Box 616, 6200 MD, Maastricht, The Netherlands	65,536
137.101.0.0/16	AS12430	ORG-AMS1-RIPE	65,536
137.96.0.0/16	AS1234	Fortum Oyj	65,536
137.147.0.0/16	AS1221	Telstra Limited	65,536
137.124.0.0/16	AS11351	State University of New York College of Technology at Delhi	65,536
137.228.0.0/16	AS127	National Aeronautics and Space Administration	65,536
137.224.0.0/16	AS1103	Wageningen Universiteit	65,536
137.45.0.0/16	AS13783	Radford University	65,536
137.124.0.0/16	AS11351	State University of New York College of Technology at Delhi	65,536
137.78.0.0/16	AS127	National Aeronautics and Space Administration	65,536
137.15.0.0/16	AS14836	City of Toronto	65,536
137.192.0.0/16	AS14929	Inteliquent, inc.	65,536
137.36.0.0/16	AS11351	The State University of New York College of Agriculture and Technology at Cobleskill	65,536
137.154.0.0/16	AS10079	University of Western Sydney	65,536
137.56.0.0/16	AS1103	Universiteit van Tilburg	65,536
137.205.0.0/16	AS201773	University of Warwick	65,536

Hosted domains

There are 86 domain names hosted across 11 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
137.138.6.31	antimatter.cern	45
137.138.226.190	scienceinschool.org	9
137.138.52.235	zenodo.org	8
137.138.55.232	codingscience.org	6
137.138.6.72	root.cern	5
137.138.6.82	antiproton.eu	5
137.138.52.182	tedxcern.com	4
137.138.124.237	rydbergfrontiers2023.com	3
137.138.122.178	es.world	2
137.138.92.148	isseg.eu	2
137.138.8.154	jurcso-garai.hu	1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.

Useful for Cybersecurity

Read more

Pingable IPs

1,749 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
137.138.124.85	AS513 CERN - European Organization for Nuclear Research	`1.17ms` from Geneve, CH
137.138.145.197	AS513 CERN - European Organization for Nuclear Research	`1.44ms` from Geneve, CH
137.138.63.5	AS513 CERN - European Organization for Nuclear Research	`1.21ms` from Geneve, CH
137.138.203.203	AS513 CERN - European Organization for Nuclear Research	`1.43ms` from Geneve, CH
137.138.76.253	AS513 CERN - European Organization for Nuclear Research	`1.26ms` from Geneve, CH
137.138.45.164	AS513 CERN - European Organization for Nuclear Research	`1.34ms` from Geneve, CH
137.138.160.207	AS513 CERN - European Organization for Nuclear Research	`1.28ms` from Geneve, CH
137.138.85.81	AS513 CERN - European Organization for Nuclear Research	`1.29ms` from Geneve, CH
137.138.156.179	AS513 CERN - European Organization for Nuclear Research	`1.21ms` from Geneve, CH
137.138.64.2	AS513 CERN - European Organization for Nuclear Research	`2.35ms` from Geneve, CH
137.138.24.87	AS513 CERN - European Organization for Nuclear Research	`1.24ms` from Geneve, CH
137.138.118.246	AS513 CERN - European Organization for Nuclear Research	`1.12ms` from Geneve, CH
137.138.97.194	AS513 CERN - European Organization for Nuclear Research	`2.32ms` from Geneve, CH
137.138.83.67	AS513 CERN - European Organization for Nuclear Research	`1.22ms` from Geneve, CH
137.138.26.174	AS513 CERN - European Organization for Nuclear Research	`1.24ms` from Geneve, CH
137.138.175.218	AS513 CERN - European Organization for Nuclear Research	`1.10ms` from Geneve, CH
137.138.13.167	AS513 CERN - European Organization for Nuclear Research	`1.32ms` from Geneve, CH
137.138.154.14	AS513 CERN - European Organization for Nuclear Research	`1.22ms` from Geneve, CH
137.138.5.102	AS513 CERN - European Organization for Nuclear Research	`1.16ms` from Geneve, CH
137.138.54.210	AS513 CERN - European Organization for Nuclear Research	`1.10ms` from Geneve, CH
137.138.158.255	AS513 CERN - European Organization for Nuclear Research	`1.21ms` from Geneve, CH
137.138.78.51	AS513 CERN - European Organization for Nuclear Research	`1.16ms` from Geneve, CH
137.138.18.88	AS513 CERN - European Organization for Nuclear Research	`1.30ms` from Geneve, CH
137.138.92.176	AS513 CERN - European Organization for Nuclear Research	`1.06ms` from Geneve, CH
137.138.223.3	AS513 CERN - European Organization for Nuclear Research	`1.56ms` from Geneve, CH

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
20.76.107.128	AS8075 Microsoft Corporation	`0.24ms` from Amsterdam, NL
73.87.172.144	AS7922 Comcast Cable Communications, LLC	`8.10ms` from Ashburn, US
177.202.222.240	AS8167 V tal	`7.52ms` from Curitiba, BR
87.66.193.0	AS5432 Proximus NV	`5.12ms` from Gravelines, FR
113.181.98.64	AS45899 VNPT Corp	`4.91ms` from Hanoi, VN
112.141.171.32	AS9443 Vocus Retail	`9.67ms` from Melbourne, AU
155.212.197.32	AS47764 LLC VK	`0.98ms` from Moscow, RU
200.165.101.80	AS7738 V tal	`1.77ms` from Rio de Janeiro, BR
68.73.69.96	AS7018 AT&T Enterprises, LLC	`13.33ms` from San Antonio, US
211.178.174.48	AS9318 SK Broadband Co Ltd	`1.31ms` from Seoul, KR
13.50.46.192	AS16509 Amazon.com, Inc.	`0.13ms` from Stockholm, SE
13.61.121.96	AS16509 Amazon.com, Inc.	`0.15ms` from Stockholm, SE
71.12.171.32	AS20115 Charter Communications LLC	`5.12ms` from Atlanta, US
51.161.12.192	AS16276 OVH SAS	`0.07ms` from Beauharnois, CA
155.130.134.112	AS23005 SWITCH, LTD	`4.70ms` from Chicago, US
63.33.98.192	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
63.178.88.32	AS16509 Amazon.com, Inc.	`0.18ms` from Frankfurt am Main, DE
42.115.11.48	AS18403 FPT Telecom Company	`9.40ms` from Hanoi, VN
222.252.99.208	AS45899 VNPT Corp	`1.12ms` from Hanoi, VN
97.64.32.128	AS25820 IT7 Networks Inc	`0.28ms` from Los Angeles, US
38.154.139.240	AS55286 B2 Net Solutions Inc.	`0.23ms` from Los Angeles, US
88.56.185.192	AS3269 Telecom Italia S.p.A.	`3.32ms` from Milan, IT
142.115.161.48	AS577 Bell Canada	`2.48ms` from Montreal, CA
72.230.77.32	AS11351 Charter Communications Inc	`16.75ms` from New York City, US
18.231.171.96	AS16509 Amazon.com, Inc.	`0.14ms` from Osasco, BR

Traceroute

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

traceroute -a -n -q1 -m9 137.138.183.49

traceroute to 137.138.183.49 (137.138.183.49): 9 hops max, 52 byte packets

1 [AS198385] 37.35.109.2 0.302 ms

2 [AS198385] 5.1.99.24 4.922 ms

3 [] 185.1.93.24 0.946 ms

4 [AS25091] 46.20.253.38 1.575 ms

5 [AS25091] 46.20.242.162 3.921 ms

6 [AS513] 192.65.184.182 3.514 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Lausanne, CH

On November 15th 2025

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