51.64.0.0/16

AS211077 · UK Home Office (The Secretary of State for the Home Department)

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Summary

Country	United Kingdom
Domain	homeoffice.gov.uk
ASN	AS211077
Registry	RIPE
ID	UK-HO-LECN

WHOIS Details

inetnum:        51.64.0.0 - 51.64.255.255
netname:        UK-HO-LECN
country:        GB
org:            ORG-UHOT1-RIPE
admin-c:        NET26-RIPE
tech-c:         NET26-RIPE
abuse-c:        AR62973-RIPE
status:         LEGACY
mnt-by:         lir-uk-ukhome-1-MNT
created:        2021-05-28T14:17:16Z
last-modified:  2021-09-14T06:02:01Z
source:         RIPE
abuse-email:    N&[email protected]
abuse-c:        AR62973-RIPE
abuse-org:      ORG-UHOT1-RIPE

organisation:   ORG-UHOT1-RIPE
org-name:       UK Home Office (The Secretary of State for the Home Department)
org-type:       LIR
address:        2 Marsham Street
address:        SW1P 4DF
address:        London
address:        UNITED KINGDOM
country:        GB
phone:          +44 345 010 0125
e-mail:         N&[email protected]
admin-c:        NET26-RIPE
tech-c:         NET26-RIPE
abuse-c:        AR62973-RIPE
mnt-ref:        lir-uk-ukhome-1-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         lir-uk-ukhome-1-MNT
created:        2021-04-23T11:51:44Z
last-modified:  2021-07-07T11:01:59Z
source:         RIPE

role:           Network Engineering Team
address:        2 Marsham Street
address:        SW1P 4DF
address:        London
address:        UNITED KINGDOM
phone:          +44 345 010 0125
e-mail:         N&[email protected]
nic-hdl:        NET26-RIPE
mnt-by:         lir-uk-ukhome-1-MNT
created:        2021-04-23T11:51:43Z
last-modified:  2021-04-23T11:51:44Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 51.0.0.0/8

Range	ASN	Company	Num of IPs
51.158.0.0/15	AS12876	Scaleway	131,072
51.172.0.0/15	AS16509	Amazon Data Services European Sovereign Cloud GmbH	131,072
51.94.0.0/15	AS16509	A100 ROW Inc	131,072
51.196.0.0/15	AS16509	A100 ROW Inc	131,072
51.192.0.0/15	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
51.186.0.0/15	AS5607	SKY UK Limited	131,072
51.4.0.0/15	AS8075	Microsoft Deutschland MCIO GmbH	131,072
51.214.0.0/15	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
51.168.0.0/15	AS16509	A100 ROW Inc	131,072
51.224.0.0/15	AS16509	Amazon Data Services European Sovereign Cloud GmbH	131,072
51.232.0.0/15	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
51.182.0.0/15	AS5607	SKY UK Limited	131,072
51.216.0.0/15	AS16509	A100 ROW Inc	131,072
51.6.0.0/15	AS6871		131,072
51.190.0.0/15	AS5607	SKY UK Limited	131,072
51.180.0.0/15	AS16509	A100 ROW Inc	131,072
51.184.0.0/15	AS16509	A100 ROW Inc	131,072
51.174.0.0/15	AS29695	Altibox AS	131,072
51.156.0.0/15	AS16509	A100 Row Inc	131,072
51.122.0.0/15	AS16509	A100 Row Inc	131,072
51.188.0.0/15	AS16509	A100 ROW Inc	131,072
51.254.0.0/15	AS16276	OVH SAS	131,072
51.176.0.0/15	AS16509	A100 ROW Inc	131,072
51.212.0.0/15	AS16509	A100 ROW Inc	131,072
51.16.0.0/15	AS16509	A100 Row Inc	131,072
51.228.0.0/15	AS16509	A100 ROW Inc	131,072
51.139.0.0/16	AS16509	A100 ROW Inc	65,536
51.150.0.0/16	AS16509	A100 Row Inc	65,536
51.20.0.0/16	AS16509	A100 ROW Inc	65,536
51.155.0.0/16	AS13037	Zen Internet Limited	65,536
51.125.0.0/16	AS16509	A100 ROW Inc	65,536
51.148.0.0/16	AS13037	Zen Internet Limited	65,536
51.131.0.0/16	AS16509	A100 ROW Inc	65,536
51.134.0.0/16	AS16509	A100 ROW Inc	65,536
51.110.0.0/16	AS16509	A100 Row Inc	65,536
51.108.0.0/16	AS16509	A100 Row Inc	65,536
51.160.0.0/16	AS16509	A100 ROW Inc	65,536
51.21.0.0/16	AS16509	A100 ROW Inc	65,536
51.91.0.0/16	AS16276	OVH SAS	65,536
51.89.0.0/16	AS16276	OVH SAS	65,536
51.112.0.0/16	AS16509	A100 ROW Inc	65,536
51.83.0.0/16	AS16276	OVH SAS	65,536

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
51.64.137.76	ctmo.cn	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

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

IP Address	ASN	Details
51.64.32.1	AS2856 British Telecommunications PLC	`4.35ms` from London, 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
77.171.195.128	AS1136 KPN B.V.	`3.36ms` from Amsterdam, NL
178.8.53.32	AS3209 Vodafone GmbH	`7.72ms` from Berlin, DE
84.178.3.16	AS3320 Deutsche Telekom AG	`6.32ms` from Frankfurt am Main, DE
99.99.233.240	AS7018 AT&T Enterprises, LLC	`7.21ms` from Houston, US
79.159.203.80	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.39ms` from Madrid, ES
181.137.225.208	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`8.96ms` from Medellin, CO
73.1.234.128	AS7922 Comcast Cable Communications, LLC	`8.17ms` from Miami, US
109.73.201.208	AS9123 JSC TIMEWEB	`0.73ms` from Moscow, RU
74.89.22.16	AS6128 Cablevision Systems Corp.	`6.25ms` from New York City, US
115.201.233.112	AS4134 CHINANET-BACKBONE	`9.68ms` from Ningbo, CN
213.179.56.48	AS21119 iteam Braathe AS	`0.51ms` from Oslo, NO
109.1.1.0	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`4.53ms` from Paris, FR
47.104.107.48	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.10ms` from Qingdao, CN
189.140.52.160	AS8151 UNINET	`12.88ms` from Santiago de Queretaro, MX
182.21.10.208	AS10010 TOKAI Communications Corporation	`3.45ms` from Tokyo, JP
220.147.82.32	AS2519 ARTERIA Networks Corporation	`9.48ms` from Tokyo, JP
175.35.217.224	AS4804 Microplex PTY LTD	`5.01ms` from Adelaide, AU
42.159.113.112	AS58593 Shanghai Blue Cloud Technology Co.,Ltd	`4.64ms` from Beijing, CN
77.189.196.224	AS6805 Telefonica Germany GmbH & Co.OHG	`2.70ms` from Frankfurt am Main, DE
193.112.154.192	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.25ms` from Guangzhou, CN
112.154.6.64	AS17858 LG POWERCOMM	`2.68ms` from Incheon, KR
166.1.34.240	AS58061 Scalaxy B.V.	`0.18ms` from Meppel, NL
80.22.12.192	AS3269 Telecom Italia S.p.A.	`4.73ms` from Milan, IT
65.2.164.240	AS16509 Amazon.com, Inc.	`0.14ms` from Mumbai, IN
216.153.104.48	AS2527 Sony Network Communications Inc.	`1.06ms` from Osaka, JP

Traceroute

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

traceroute -a -n -q1 -f5 -m11 51.64.135.201

traceroute to 51.64.135.201 (51.64.135.201): 11 hops max, 52 byte packets

5 [AS6461] 64.125.28.215 10.954 ms

6 [AS2856] 109.159.253.66 12.171 ms

7 [AS2856] 62.172.102.34 12.661 ms

8 [AS2856] 62.172.102.27 13.423 ms

9 *

10 *

11 *

Measurement taken from

IPinfo ProbeNet in Dublin, IE

On January 30th 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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