51.155.0.0/16

AS13037 · Zen Internet Ltd

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Summary

Country	United Kingdom
Domain	zen.co.uk
ASN	AS13037
Registry	RIPE
ID	UK-ZEN

WHOIS Details

inetnum:        51.155.0.0 - 51.155.255.255
netname:        UK-ZEN
descr:          Zen Internet Limited
country:        GB
org:            ORG-ZIL1-RIPE
admin-c:        ZIRA1-RIPE
tech-c:         ZIRA1-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
mnt-by:         ZEN-MNT
mnt-by:         ZEN-NOC-MNT
created:        2015-09-23T13:10:05Z
last-modified:  2024-07-22T12:46:52Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR18024-RIPE
abuse-org:      ORG-ZIL1-RIPE

organisation:   ORG-ZIL1-RIPE
org-name:       Zen Internet Ltd
country:        GB
org-type:       LIR
address:        Sandbrook Park, Sandbrook Way
address:        OL11 1RY
address:        Rochdale
address:        UNITED KINGDOM
phone:          +44 1706 902000
fax-no:         +44 1706 902005
e-mail:         [email protected]
admin-c:        RT1337-RIPE
admin-c:        ZIRA1-RIPE
admin-c:        BC8726-RIPE
abuse-c:        AR18024-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        ZEN-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         ZEN-MNT
created:        2004-04-17T12:24:23Z
last-modified:  2022-07-28T12:34:09Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        AR18024-RIPE
abuse-org:      undefined

role:           Zen Internet RIPE Admin
address:        Zen Internet
address:        Sandbrook Park
address:        Sandbrook Way
address:        Rochdale
address:        OL11 1RY
address:        United Kingdom
phone:          +44 1706 902 000
fax-no:         +44 1706 902 005
e-mail:         [email protected]
admin-c:        RT1337-RIPE
tech-c:         BC8726-RIPE
nic-hdl:        ZIRA1-RIPE
mnt-by:         ZEN-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2023-08-02T10:21:33Z
source:         RIPE

route:          51.155.0.0/16
descr:          Zen Internet Ltd
origin:         AS13037
mnt-by:         ZEN-MNT
created:        2015-12-29T13:26:17Z
last-modified:  2019-07-04T10:57:25Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 51.0.0.0/8

Range	ASN	Company	Num of IPs
51.6.0.0/15	AS6871		131,072
51.176.0.0/15	AS16509	A100 ROW Inc	131,072
51.94.0.0/15	AS16509	A100 ROW Inc	131,072
51.158.0.0/15	AS12876	Scaleway	131,072
51.214.0.0/15	AS16509	A100 Row Inc	131,072
51.244.0.0/15	AS16509	A100 ROW Inc	131,072
51.236.0.0/15	AS16509	A100 ROW Inc	131,072
51.48.0.0/15	AS16509	A100 ROW Inc	131,072
51.182.0.0/15	AS5607	SKY UK Limited	131,072
51.16.0.0/15	AS16509	A100 Row Inc	131,072
51.216.0.0/15	AS16509	A100 ROW Inc	131,072
51.192.0.0/15	AS16509	A100 ROW Inc	131,072
51.172.0.0/15	AS16509	A100 ROW Inc	131,072
51.254.0.0/15	AS16276	OVH SAS	131,072
51.212.0.0/15	AS16509	A100 ROW Inc	131,072
51.232.0.0/15	AS16509	A100 ROW Inc	131,072
51.248.0.0/15	AS16509	A100 ROW Inc	131,072
51.34.0.0/15	AS16509	A100 Row Inc	131,072
51.220.0.0/15	AS16509	A100 ROW Inc	131,072
51.174.0.0/15	AS29695	Altibox AS	131,072
51.186.0.0/15	AS5607	SKY UK Limited	131,072
51.4.0.0/15	AS8075	Microsoft Deutschland MCIO GmbH	131,072
51.196.0.0/15	AS16509	A100 ROW Inc	131,072
51.190.0.0/15	AS5607	SKY UK Limited	131,072
51.184.0.0/15	AS16509	A100 ROW Inc	131,072
51.252.0.0/15	AS25019	Saudi Telecom Company JSC	131,072
51.208.0.0/15	AS16509	A100 ROW Inc	131,072
51.188.0.0/15	AS16509	A100 ROW Inc	131,072
51.156.0.0/15	AS16509	A100 Row Inc	131,072
51.122.0.0/15	AS16509	A100 Row Inc	131,072
51.168.0.0/15	AS16509	A100 ROW Inc	131,072
51.180.0.0/15	AS16509	A100 ROW Inc	131,072
51.224.0.0/15	AS16509	Amazon Data Services European Sovereign Cloud GmbH	131,072
51.228.0.0/15	AS16509	A100 ROW Inc	131,072
51.20.0.0/16	AS16509	A100 ROW Inc	65,536
51.125.0.0/16	AS16509	A100 ROW Inc	65,536
51.160.0.0/16	AS16509	A100 ROW Inc	65,536
51.129.0.0/16	AS16509	A100 ROW Inc	65,536
51.148.0.0/16	AS13037	Zen Internet Limited	65,536
51.139.0.0/16	AS16509	A100 ROW Inc	65,536
51.150.0.0/16	AS16509	A100 Row Inc	65,536
51.112.0.0/16	AS16509	A100 ROW Inc	65,536
51.110.0.0/16	AS16509	A100 Row Inc	65,536
51.21.0.0/16	AS16509	A100 ROW Inc	65,536
51.108.0.0/16	AS16509	A100 Row Inc	65,536
51.91.0.0/16	AS16276	OVH SAS	65,536
51.121.0.0/16	AS16509	A100 ROW Inc	65,536
51.118.0.0/16	AS16509	A100 ROW Inc	65,536
51.89.0.0/16	AS16276	OVH SAS	65,536

Hosted domains

There are 916 domain names hosted across 285 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
51.155.58.232	riseandshineluton.co.uk	152
51.155.39.53	equestriandecor.co.uk	135
51.155.22.241	jofson-mitsubishi.co.uk	69
51.155.58.226	dinandcoinvestments.co.uk	35
51.155.21.147	ndtraining.co.uk	23
51.155.153.73	itforbournemouth.co.uk	22
51.155.184.186	hiasvc.com	15
51.155.132.15	magnoliatemple.co.uk	15
51.155.255.163	cheshireadultlearning.org.uk	14
51.155.84.101	searchukelectoralroll.com	13
51.155.235.235	adfos.com	11
51.155.22.243	loveukglamourgirls.co.uk	9
51.155.215.234	putleyservices.co.uk	8
51.155.253.138	susiehenley.co.uk	7
51.155.224.73	quatrain.org.uk	7
51.155.236.65	jamesnicks.com	6
51.155.203.168	kenyon.org.uk	6
51.155.238.74	zfppy.uk	6
51.155.84.97	peopletrace.com	6
51.155.1.124	footychat.co.uk	6

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

34,875 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
51.155.34.38	AS13037 Zen Internet Ltd	`0.88ms` from London, GB
51.155.8.3	AS13037 Zen Internet Ltd	`2.11ms` from London, GB
51.155.153.165	AS13037 Zen Internet Ltd	`1.53ms` from Manchester, GB
51.155.5.13	AS13037 Zen Internet Ltd	`1.68ms` from Manchester, GB
51.155.120.247	AS13037 Zen Internet Ltd	`1.46ms` from Manchester, GB
51.155.252.244	AS13037 Zen Internet Ltd	`2.97ms` from Manchester, GB
51.155.113.239	AS13037 Zen Internet Ltd	`2.09ms` from Manchester, GB
51.155.100.129	AS13037 Zen Internet Ltd	`1.65ms` from Manchester, GB
51.155.108.119	AS13037 Zen Internet Ltd	`1.99ms` from London, GB
51.155.39.30	AS13037 Zen Internet Ltd	`1.19ms` from London, GB
51.155.168.4	AS13037 Zen Internet Ltd	`2.22ms` from London, GB
51.155.86.14	AS13037 Zen Internet Ltd	`1.01ms` from Manchester, GB
51.155.222.149	AS13037 Zen Internet Ltd	`1.53ms` from Manchester, GB
51.155.212.8	AS13037 Zen Internet Ltd	`1.68ms` from Manchester, GB
51.155.116.136	AS13037 Zen Internet Ltd	`1.87ms` from Manchester, GB
51.155.129.157	AS13037 Zen Internet Ltd	`2.37ms` from Manchester, GB
51.155.101.190	AS13037 Zen Internet Ltd	`1.85ms` from Manchester, GB
51.155.165.229	AS13037 Zen Internet Ltd	`1.49ms` from Manchester, GB
51.155.47.150	AS13037 Zen Internet Ltd	`0.92ms` from London, GB
51.155.80.201	AS13037 Zen Internet Ltd	`0.60ms` from Manchester, GB
51.155.71.65	AS13037 Zen Internet Ltd	`0.49ms` from Manchester, GB
51.155.190.20	AS13037 Zen Internet Ltd	`1.51ms` from Manchester, GB
51.155.182.58	AS13037 Zen Internet Ltd	`1.45ms` from Manchester, GB
51.155.211.104	AS13037 Zen Internet Ltd	`1.72ms` from Manchester, GB
51.155.114.63	AS13037 Zen Internet Ltd	`1.54ms` from Manchester, GB

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
200.8.33.176	AS21826 Corporación Telemic C.A.	`12.07ms` from Bogota, CO
191.104.125.112	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`3.26ms` from Bogota, CO
123.88.122.144	AS56040 China Mobile communications corporation	`6.16ms` from Guangzhou, CN
45.194.68.0	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED	`0.53ms` from Ho Chi Minh City, VN
24.233.168.32	AS30404 Blue Stream	`12.97ms` from Miami, US
219.102.121.160	AS2514 NTT PC Communications, Inc.	`4.22ms` from Osaka, JP
88.176.26.112	AS12322 Free SAS	`4.54ms` from Paris, FR
90.50.38.144	AS3215 Orange S.A.	`16.07ms` from Paris, FR
78.110.212.32	AS15614 Dragon Internet a.s.	`1.58ms` from Prague, CZ
14.129.238.16	AS38676 flexnetworks	`1.46ms` from Seoul, KR
203.228.74.112	AS4766 Korea Telecom	`5.79ms` from Seoul, KR
175.123.9.80	AS9318 SK Broadband Co Ltd	`4.20ms` from Seoul, KR
23.5.165.224	AS20940 Akamai International B.V.	`0.47ms` from Singapore, SG
50.30.36.16	AS30083 velia.net	`0.10ms` from St. Louis, US
16.16.203.112	AS16509 Amazon.com, Inc.	`0.99ms` from Stockholm, SE
1.161.29.176	AS3462 Data Communication Business Group	`1.14ms` from Taipei, TW
153.213.245.176	AS4713 NTT DOCOMO BUSINESS,Inc.	`7.25ms` from Tokyo, JP
58.10.204.0	AS17552 True Online	`1.62ms` from Bangkok, TH
70.123.78.96	AS11427 Charter Communications Inc	`9.30ms` from Dallas, US
212.169.198.48	AS12479 Orange Espagne SA	`7.63ms` from Madrid, ES
87.221.136.48	AS12479 Orange Espagne SA	`1.79ms` from Madrid, ES
2.154.152.224	AS6739 VODAFONE ONO, S.A.	`5.39ms` from Madrid, ES
151.51.16.64	AS1267 WIND TRE S.P.A.	`7.94ms` from Milan, IT
185.145.72.0	AS41114 ORNE THD SPL	`4.01ms` from Paris, FR
71.185.232.224	AS701 Verizon Business	`1.13ms` from Philadelphia, US

Traceroute

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

traceroute -a -n -q1 -f4 51.155.2.100

traceroute to 51.155.2.100 (51.155.2.100): 64 hops max, 52 byte packets

4 [AS13037] 51.148.73.15 3.45 ms

5 [AS13037] 51.155.2.100 2.779 ms

Measurement taken from

IPinfo ProbeNet in Manchester, GB

On November 28th 2025

What are IP address ranges?

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