128.141.0.0/16

AS513 · CERN - European Organization for Nuclear Research

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Summary

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

WHOIS Details

inetnum:        128.141.0.0 - 128.141.255.255
netname:        CERN-GPN-DYN
descr:          CERN Campus dynamic addresses
descr:          CERN - European Organization for Nuclear Research
descr:          CH-1211 Geneva 23, Switzerland
country:        CH
admin-c:        CERN513
tech-c:         CERN513
status:         LEGACY
mnt-by:         CERN-MNT
mnt-routes:     CERN-MNT
mnt-domains:    CERN-MNT
mnt-domains:    CERN-MNT
notify:         [email protected]
org:            ORG-CEOf1-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2015-05-05T01:42:22Z
source:         RIPE
abuse-email:    [email protected]
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:         [email protected]
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         CERN513
abuse-c:        CERN513
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CERN-MNT
notify:         [email protected]
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:    [email protected]
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:         [email protected]
remarks:        trouble: ------------------------------------------
remarks:        trouble: Operational issues: <[email protected]>
remarks:        trouble: Peering issues: <[email protected]>
remarks:        trouble: CIXP issues: <[email protected]>
remarks:        trouble: Abuse and SPAM: <[email protected]>
remarks:        trouble: ------------------------------------------
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         EM1969
tech-c:         DGR6-RIPE
nic-hdl:        CERN513
mnt-by:         CERN-MNT
notify:         [email protected]
abuse-mailbox:  [email protected]
created:        2015-04-14T08:36:32Z
last-modified:  2025-09-08T15:31:38Z
source:         RIPE

route:          128.141.0.0/16
descr:          CERN-ETHER
origin:         AS513
org:            ORG-CEOf1-RIPE
mnt-by:         CERN-MNT
mnt-lower:      CERN-MNT
mnt-routes:     CERN-MNT
notify:         [email protected]
created:        1970-01-01T00:00:00Z
last-modified:  2015-05-12T14:21:31Z
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:         [email protected]
admin-c:        EM1969
admin-c:        DGR6-RIPE
tech-c:         CERN513
abuse-c:        CERN513
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CERN-MNT
notify:         [email protected]
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:    [email protected]
abuse-c:        CERN513
abuse-org:      undefined

Nearby Ranges

BGP prefixes that overlap with 128.0.0.0/8

Range	ASN	Company	Num of IPs
128.78.0.0/15	AS5410	Bouygues Telecom SA	131,072
128.178.0.0/15	AS559	Ecublens Camp Net	131,072
128.130.0.0/15	AS679	Technische Universitaet Wien	131,072
128.255.0.0/16	AS3676	University of Iowa	65,536
128.143.0.0/16	AS225	University of Virginia	65,536
128.192.0.0/16	AS36441	University of Georgia	65,536
128.55.0.0/16	AS2936	ESnet	65,536
128.183.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.206.0.0/16	AS26934	University of Missouri-Columbia	65,536
128.175.0.0/16	AS34	University of Delaware	65,536
128.102.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.189.0.0/16	AS271	BCNET	65,536
128.217.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.158.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.22.0.0/16	AS17511	OPTAGE Inc.	65,536
128.18.0.0/16	AS264	SRI International	65,536
128.12.0.0/16	AS32	Stanford University	65,536
128.228.0.0/16	AS31822	City University of New York	65,536
128.53.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
128.47.0.0/16	AS252	Headquarters, USAISC	65,536
128.8.0.0/16	AS27	University of Maryland	65,536
128.87.0.0/16	AS158	Telefonaktiebolaget LM Ericsson	65,536
128.19.0.0/16	AS27064	DoD Network Information Center	65,536
128.37.0.0/16	AS27064	Headquarters, USAISC	65,536
128.214.0.0/16	AS1741	CSC - Tieteen tietotekniikan keskus Oy	65,536
128.159.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.3.0.0/16	AS16	Lawrence Berkeley National Laboratory	65,536
128.157.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.34.0.0/16	AS22	Navy Network Information Center (NNIC)	65,536
128.49.0.0/16	AS22	Navy Network Information Center (NNIC)	65,536
128.93.0.0/16	AS2200	Institut National de Recherche en Informatique et Automatique	65,536
128.39.0.0/16	AS224	UNINETT backbone network	65,536
128.231.0.0/16	AS3527	National Institutes of Health	65,536
128.27.0.0/16	AS17511	OPTAGE Inc.	65,536
128.28.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
128.155.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.103.0.0/16	AS198949	Harvard University	65,536
128.135.0.0/16	AS160	The University of Chicago	65,536
128.4.0.0/16	AS2	University of Delaware	65,536
128.233.0.0/16	AS22950	University of Saskatchewan	65,536
128.163.0.0/16	AS23162	University of Kentucky	65,536
128.151.0.0/16	AS20	University of Rochester	65,536
128.100.0.0/16	AS239	University of Toronto	65,536
128.170.0.0/16	AS243	L3Harris Technologies, Inc.	65,536
128.252.0.0/16	AS2552	Washington University	65,536
128.253.0.0/16	AS26	Cornell University	65,536
128.98.0.0/16	AS24775	QinetiQ TIM	65,536
128.186.0.0/16	AS2553	Florida State University	65,536
128.32.0.0/16	AS25	University of California at Berkeley	65,536
128.234.0.0/16	AS25019	Saudi Telecom Company JSC	65,536

Hosted domains

There are no domains currently hosted on this ASN.

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

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

IP Address	ASN	Details
128.141.9.229	AS513 CERN - European Organization for Nuclear Research	`23.74ms` from Geneve, CH
128.141.1.112	AS513 CERN - European Organization for Nuclear Research	`4.32ms` from Lausanne, CH
128.141.6.190	AS513 CERN - European Organization for Nuclear Research	`5.08ms` from Geneve, CH
128.141.5.48	AS513 CERN - European Organization for Nuclear Research	`2.18ms` from Geneve, CH
128.141.12.144	AS513 CERN - European Organization for Nuclear Research	`10.77ms` from Lugano, CH
128.141.2.206	AS513 CERN - European Organization for Nuclear Research	`6.19ms` from Geneve, CH
128.141.13.143	AS513 CERN - European Organization for Nuclear Research	`2.01ms` from Geneve, CH
128.141.14.3	AS513 CERN - European Organization for Nuclear Research	`5.14ms` from Geneve, CH
128.141.15.75	AS513 CERN - European Organization for Nuclear Research	`5.82ms` from Lausanne, CH
128.141.4.122	AS513 CERN - European Organization for Nuclear Research	`4.24ms` from Geneve, CH
128.141.11.106	AS513 CERN - European Organization for Nuclear Research	`3.30ms` from Lausanne, CH
128.141.10.151	AS513 CERN - European Organization for Nuclear Research	`8.03ms` from Zuerich, CH
128.141.0.196	AS513 CERN - European Organization for Nuclear Research	`2.28ms` 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
212.192.201.80	AS62240 Clouvider	`0.18ms` from Amsterdam, NL
80.171.1.48	AS6805 Telefonica Germany GmbH & Co.OHG	`3.52ms` from Duesseldorf, DE
180.252.235.128	AS7713 PT Telekomunikasi Indonesia	`1.95ms` from Jakarta, ID
171.64.62.128	AS32 Stanford University	`1.80ms` from San Jose, US
182.21.96.96	AS10010 TOKAI Communications Corporation	`1.91ms` from Tokyo, JP
52.194.58.176	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP
41.230.176.48	AS37705 TOPNET	`2.26ms` from Tunis, TN
104.44.235.32	AS8075 Microsoft Corporation	`0.41ms` from Warsaw, PL
23.17.94.96	AS852 TELUS Communications Inc.	`9.83ms` from Calgary, CA
69.254.157.0	AS7922 Comcast Cable Communications, LLC	`16.25ms` from Denver, US
39.174.232.160	AS56041 China Mobile communications corporation	`9.58ms` from Hangzhou, CN
93.112.129.96	AS25019 Saudi Telecom Company JSC	`2.94ms` from Jeddah, SA
109.182.156.208	AS5603 Telekom Slovenije, d.d.	`1.08ms` from Ljubljana, SI
81.202.83.224	AS6739 VODAFONE ONO, S.A.	`9.62ms` from Madrid, ES
86.193.254.192	AS3215 Orange S.A.	`3.62ms` from Marseille, FR
219.101.18.192	AS17698 COMMUNITY NETWORK CENTER INCORPORATED.	`6.10ms` from Osaka, JP
79.42.162.192	AS3269 Telecom Italia S.p.A.	`13.69ms` from Rome, IT
50.207.68.80	AS33660 Comcast Cable Communications, LLC	`2.26ms` from Salt Lake City, US
111.186.53.0	AS4538 China Education and Research Network Center	`2.87ms` from Shanghai, CN
59.127.177.112	AS3462 Data Communication Business Group	`4.18ms` from Taichung, TW
83.24.87.176	AS5617 Orange Polska Spolka Akcyjna	`2.80ms` from Warsaw, PL
203.45.79.48	AS1221 Telstra Limited	`2.04ms` from Brisbane, AU
148.62.50.240	AS33070 Rackspace Hosting	`1.09ms` from Dallas, US
103.146.245.16	AS137289 PT. SIGMA CIPTA CARAKA	`2.45ms` from Jakarta, ID
97.170.129.144	AS6167 Verizon Business	`13.83ms` from Los Angeles, US

Traceroute

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

traceroute -a -n -q1 -f6 -m12 128.141.51.125

traceroute to 128.141.51.125 (128.141.51.125): 12 hops max, 52 byte packets

6 [AS6939] 184.105.213.139 93.699 ms

7 *

8 [AS513] 192.65.185.3 92.632 ms

9 [AS513] 192.65.184.182 92.031 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Columbus, US

On December 6th 2025

What are IP address ranges?

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