192.91.244.0/23

AS513 · CERN - European Organization for Nuclear Research

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Summary

Country	Switzerland
Domain	cern.ch
ASN	AS513
Registry	RIPE
ID	CERN-CNET244

WHOIS Details

inetnum:        192.91.244.0 - 192.91.244.255
netname:        CERN-CNET244
descr:          CERN - European Organization for Nuclear Research
descr:          CH-1211 Geneva 23, Switzerland
country:        CH
admin-c:        CERN513
tech-c:         CERN513
status:         LEGACY
notify:         extip@cern.ch
org:            ORG-CEOf1-RIPE
mnt-by:         CERN-MNT
mnt-routes:     CERN-MNT
mnt-domains:    CERN-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2015-07-31T08:21:06Z
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:          192.91.244.0/23
descr:          CERN- European Laboratory for Particle Physics
descr:          CH-1211 Geneva 23, Switzerland
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:  2015-08-12T12:31:38Z
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 192.91.0.0/16

Range	ASN	Company	Num of IPs
192.91.236.0/22	AS513	CERN - European Organization for Nuclear Research	1,024
192.91.60.0/24	AS12801	Texas Instruments Incorporated	256
192.91.62.0/24	AS12801	Texas Instruments Incorporated	256
192.91.64.0/24	AS12801	Texas Instruments Incorporated	256
192.91.108.0/24	AS133462	Texas Instruments Incorporated	256
192.91.109.0/24	AS133462	Texas Instruments Incorporated	256
192.91.139.0/24	AS13807	Great Plains Communications LLC	256
192.91.0.0/24	AS1437	Visonex LLC	256
192.91.137.0/24	AS1516	Headquarters, USAISC	256
192.91.191.0/24	AS15248	Microsoft Azure for Operators	256
192.91.177.0/24	AS15525	MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	256
192.91.101.0/24	AS161	Texas Instruments Incorporated	256
192.91.66.0/24	AS161	Texas Instruments Incorporated	256
192.91.75.0/24	AS161	Texas Instruments Incorporated	256
192.91.234.0/24	AS17109	Calitech	256
192.91.249.0/24	AS17298	ROEHL TRANSPORT, INC.	256
192.91.178.0/24	AS174	CARNEGIE INSTITUTION FOR SCIENCE	256
192.91.186.0/24	AS206411	DEMOS SEC	256
192.91.254.0/24	AS268433	MGCLOUD SOLUCOES EM TIC LTDA - ME	256
192.91.63.0/24	AS29057	Texas Instruments Incorporated	256
192.91.253.0/24	AS3356	University of Dallas	256
192.91.184.0/24	AS3424	National Nuclear Security Administration, Kansas City Plant	256
192.91.200.0/24	AS36974	MTN COTE D'IVOIRE S.A	256
192.91.198.0/24	AS3783	Allegheny Intermediate Unit	256
192.91.204.0/24	AS393862	Children's Hospital & Medical Center	256
192.91.246.0/24	AS513	CERN - European Organization for Nuclear Research	256
192.91.214.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.215.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.216.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.217.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.218.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.219.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.220.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.221.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.222.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.223.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.224.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.225.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.226.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.227.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.228.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.229.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.230.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.231.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.232.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.233.0/24	AS56736	Vastra Gotalandsregionen	256
192.91.199.0/24	AS56739	Temporary Allocations	256
192.91.144.0/24	AS62830	RiotGames	256
192.91.255.0/24	AS63424	ADVANTAGE DENTAL CLINICS	256
192.91.205.0/24	AS749	Air Force Systems Networking	256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
192.91.244.229	frenchmobility.fr	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

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

IP Address	ASN	Details
192.91.244.77	AS513 CERN - European Organization for Nuclear Research	`0.35ms` from Geneve, CH
192.91.245.86	AS513 CERN - European Organization for Nuclear Research	`0.34ms` 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
178.239.16.87	AS206238 Freedom Internet BV	`0.78ms` from Amsterdam, NL
41.203.8.23	AS37153 Xneelo (Pty) Ltd	`1.70ms` from Cape Town, ZA
48.209.149.199	AS8075 Microsoft Corporation	`0.19ms` from Dublin, IE
51.91.234.39	AS16276 OVH SAS	`0.06ms` from Gravelines, FR
222.100.63.55	AS4766 Korea Telecom	`0.67ms` from Incheon, KR
84.189.153.119	AS3320 Deutsche Telekom AG	`5.51ms` from Nuernberg, DE
174.26.243.7	AS209 CenturyLink Communications, LLC	`2.06ms` from Phoenix, US
177.241.118.119	AS13999 Mega Cable, S.A. de C.V.	`8.18ms` from Santiago de Querétaro, MX
125.143.187.215	AS4766 Korea Telecom	`1.39ms` from Seoul, KR
58.227.25.135	AS9318 SK Broadband Co Ltd	`6.31ms` from Seoul, KR
1.117.221.231	AS45090 Shenzhen Tencent Computer Systems Company Limited	`0.98ms` from Shanghai, CN
114.47.34.215	AS3462 Data Communication Business Group	`5.88ms` from Taichung, TW
52.167.46.215	AS8075 Microsoft Corporation	`0.22ms` from Boydton, US
5.15.88.87	AS8708 DIGI ROMANIA S.A.	`4.89ms` from Bucharest, RO
84.64.122.55	AS5378 Vodafone Limited	`3.62ms` from Edinburgh, GB
220.81.100.199	AS4766 Korea Telecom	`5.00ms` from Incheon, KR
58.226.86.55	AS9318 SK Broadband Co Ltd	`6.92ms` from Incheon, KR
81.202.230.87	AS6739 VODAFONE ONO, S.A.	`9.38ms` from Madrid, ES
128.186.110.231	AS2553 Florida State University	`10.28ms` from Miami, US
199.187.119.55	AS396982 Google LLC	`0.17ms` from Moncks Corner, US
67.245.7.151	AS12271 Charter Communications Inc	`3.49ms` from New York City, US
34.12.234.55	AS396982 Google LLC	`0.13ms` from Oudeschip, NL
190.10.177.23	AS14522 SERVICIOS DE TELECOMUNICACIONES SETEL S.A. (XTRIM EC)	`1.48ms` from Quito, EC
118.54.161.87	AS4766 Korea Telecom	`1.71ms` from Seoul, KR
175.174.22.39	AS4837 CHINA UNICOM China169 Backbone	`8.44ms` from Tieling, CN

Traceroute

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

traceroute -a -n -q1 192.91.244.94

traceroute to 192.91.244.94 (192.91.244.94): 64 hops max, 52 byte packets

1 [AS15169] 108.170.226.38 236.894 ms

2 [AS513] 192.65.184.89 229.484 ms

3 *

4 [AS513] 192.91.244.94 229.489 ms

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On February 16th 2026

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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