51.56.0.0/14

AS8075 · Microsoft Corporation

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Summary

Country	United Kingdom
Domain	microsoft.com
ASN	AS8075
Registry	RIPE
ID	UK-MICROSOFT

WHOIS Details

inetnum:        51.54.0.0 - 51.59.255.255
netname:        UK-Microsoft
country:        GB
org:            ORG-MA42-RIPE
status:         LEGACY
mnt-by:         RIPE-NCC-LEGACY-MNT
admin-c:        DH5439-RIPE
tech-c:         MRPA3-RIPE
mnt-by:         MICROSOFT-MAINT
created:        2016-10-06T10:59:35Z
last-modified:  2024-05-08T16:24:39Z
source:         RIPE
abuse-email:    abuse@microsoft.com
abuse-c:        MAC274-RIPE
abuse-org:      ORG-MA42-RIPE

organisation:   ORG-MA42-RIPE
org-name:       Microsoft Limited
country:        GB
org-type:       LIR
descr:          Microsoft Corporation AS8075
descr:          To report suspected security issues specific to
descr:          traffic emanating from Microsoft online services,
descr:          including the distribution of malicious content
descr:          or other illicit or illegal material through a
descr:          Microsoft online service, please submit reports
descr:          to:
descr:          * https://cert.microsoft.com
descr:          For SPAM and other abuse issues, such as Microsoft
descr:          Accounts, please contact:
descr:          * abuse@microsoft.com
descr:          To report security vulnerabilities in Microsoft
descr:          products and services, please contact:
descr:          * secure@microsoft.com
descr:          For legal and law enforcement-related requests,
descr:          please contact:
descr:          * msndcc@microsoft.com
descr:          For routing, peering or DNS issues, please
descr:          contact:
descr:          * IOC@microsoft.com
address:        One Microsoft Way
address:        WA 98052
address:        Redmond
address:        UNITED STATES
phone:          +1 425 882 8080
fax-no:         +1 425 936 7329
e-mail:         iphostmaster@microsoft.com
abuse-c:        MAC274-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MICROSOFT-MAINT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MICROSOFT-MAINT
created:        2004-04-17T12:18:10Z
last-modified:  2022-03-08T18:20:31Z
source:         RIPE
abuse-email:    abuse@microsoft.com
abuse-c:        MAC274-RIPE
abuse-org:      undefined

role:           Microsoft Routing, Peering, and DNS
address:        One Microsoft Way
address:        Redmond, WA 98052
e-mail:         ioc@microsoft.com
nic-hdl:        MRPA3-RIPE
mnt-by:         MICROSOFT-MAINT
created:        2014-08-26T16:25:24Z
last-modified:  2014-08-26T16:25:24Z
source:         RIPE

person:         Divya Quamara
address:        One Microsoft Way
address:        Redmond, WA 98052
phone:          +1-425-882-8080
nic-hdl:        DH5439-RIPE
mnt-by:         MICROSOFT-MAINT
created:        2014-08-26T16:24:14Z
last-modified:  2016-02-19T07:09:41Z
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
51.155.0.0/16	AS13037	Zen Internet Limited	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 61 domain names hosted across 28 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
51.57.72.106	v-tronix.net	17
51.57.64.249	thenudecruise.com	7
51.57.64.100	horizonparts.com	6
51.57.74.129	optimusparts.co	4
51.57.79.70	horizonparts.com	4
51.57.71.132	valdyr.xyz	2
51.57.74.70	premiermarketingus.org	2
51.57.61.93	cordoba-policiacaminera.com	1
51.57.81.99	innergoddess.tech	1
51.57.58.130	rptechsolutions.cloud	1
51.57.81.59	jokicasino.com	1
51.57.68.9	stenonbloc.online	1
51.57.64.218	itteatime.com	1
51.57.80.60	bgbroskazur.com	1
51.57.72.84	clientes-telepase.com	1
51.57.71.55	studiio.au	1
51.57.81.85	celastrous.me	1
51.57.116.121	auto-kraus.com	1
51.57.80.51	gpt4.chat	1
51.57.66.174	prudentcloud.us	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

1,610 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
51.59.0.201	AS8075 Microsoft Corporation	`0.91ms` from Sao Paulo, BR
51.57.72.221	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US
51.56.102.69	AS8075 Microsoft Corporation	`0.91ms` from Sydney, AU
51.57.66.189	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.106.15	AS8075 Microsoft Corporation	`0.22ms` from Phoenix, US
51.57.59.92	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.68.207	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.57.183	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.100.77	AS8075 Microsoft Corporation	`0.24ms` from Phoenix, US
51.56.83.128	AS8075 Microsoft Corporation	`0.69ms` from Sydney, AU
51.58.32.98	AS8075 Microsoft Corporation	`0.16ms` from Modiin Ilit, IL
51.57.61.78	AS8075 Microsoft Corporation	`0.22ms` from Phoenix, US
51.57.92.57	AS8075 Microsoft Corporation	`0.22ms` from Phoenix, US
51.57.99.145	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.48.8	AS8075 Microsoft Corporation	`0.22ms` from Phoenix, US
51.57.65.71	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US
51.56.82.226	AS8075 Microsoft Corporation	`0.73ms` from Sydney, AU
51.58.25.81	AS8075 Microsoft Corporation	`0.16ms` from Modiin Ilit, IL
51.57.76.110	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.101.101	AS8075 Microsoft Corporation	`0.18ms` from Phoenix, US
51.57.103.130	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.75.230	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US
51.57.71.79	AS8075 Microsoft Corporation	`0.21ms` from Phoenix, US
51.57.74.159	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US
51.57.58.159	AS8075 Microsoft Corporation	`0.20ms` from Phoenix, US

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
129.10.46.46	AS156 Northeastern University	`4.09ms` from Boston, US
178.119.253.46	AS6848 Telenet BV	`6.78ms` from Brussels, BE
199.185.108.254	AS23229 TransCanada Pipelines Ltd.	`3.77ms` from Calgary, CA
18.253.224.206	AS8987 Amazon Data Services Ireland Ltd	`0.80ms` from Columbus, US
184.75.254.78	AS13767 DataBank Holdings, Ltd.	`1.66ms` from Dallas, US
71.221.125.254	AS19901 Brightspeed	`7.16ms` from Dallas, US
62.26.26.62	AS12312 ecotel communication ag	`0.51ms` from Frankfurt am Main, DE
120.87.40.254	AS17816 China Unicom IP network China169 Guangdong province	`8.60ms` from Guangzhou, CN
219.129.14.14	AS4134 CHINANET-BACKBONE	`11.58ms` from Guangzhou, CN
60.18.99.94	AS4837 CHINA UNICOM China169 Backbone	`10.04ms` from Liaoyang, CN
140.150.67.254	AS212174 Jola Cloud Solutions Ltd	`1.44ms` from London, GB
186.0.61.254	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`19.85ms` from Medellin, CO
115.131.89.206	AS7545 TPG Telecom Limited	`10.82ms` from Melbourne, AU
216.49.187.254	AS19648 Corporation of the Presiding Bishop of the Church of Jesus Christ of Latter-day Saints	`1.24ms` from Salt Lake City, US
186.249.146.30	AS28649 Desktop Sigmanet Comunicação Multimídia SA	`1.56ms` from Sao Paulo, BR
163.19.25.254	AS1659 Taiwan Academic Network (TANet) Information Center	`2.80ms` from Taipei, TW
126.74.192.14	AS17676 SoftBank Corp.	`2.84ms` from Tokyo, JP
185.26.191.254	AS47692 Nessus GmbH	`0.50ms` from Vienna, AT
142.93.228.158	AS14061 DigitalOcean, LLC	`0.22ms` from Amsterdam, NL
61.91.211.78	AS7470 TRUE INTERNET Co.,Ltd.	`0.27ms` from Bangkok, TH
91.67.79.254	AS3209 Vodafone GmbH	`3.32ms` from Berlin, DE
80.99.127.190	AS21334 One Hungary Ltd.	`1.16ms` from Budapest, HU
74.218.184.110	AS11426 Charter Communications Inc	`2.81ms` from Charlotte, US
206.121.84.190	AS7018 AT&T Enterprises, LLC	`2.28ms` from Chicago, US
34.9.128.110	AS396982 Google LLC	`0.12ms` from Council Bluffs, US

Traceroute

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

traceroute -a -n -q1 -f3 -m7 51.58.163.53

traceroute to 51.58.163.53 (51.58.163.53): 7 hops max, 52 byte packets

3 [AS9002] 87.245.233.142 11.6 ms

4 [AS8075] 104.44.13.216 16.203 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Kyiv, UA

On November 22nd 2025

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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