51.10.0.0/15

AS8075 · Microsoft Corporation

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Summary

Country	United States
Domain	microsoft.com
ASN	AS8075
Registry	RIPE
ID	CLOUD

WHOIS Details

inetnum:        51.10.0.0 - 51.10.255.255
netname:        cloud
country:        US
admin-c:        DH5439-RIPE
tech-c:         MRPA3-RIPE
status:         LEGACY
mnt-by:         MICROSOFT-MAINT
created:        2025-09-05T18:13:16Z
last-modified:  2025-09-05T18:13:16Z
source:         RIPE
abuse-email:    abuse@microsoft.com
abuse-c:        MAC274-RIPE
abuse-org:      ORG-MA42-RIPE

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

route:          51.10.0.0/15
origin:         AS8075
descr:          Microsoft
notify:         radb@microsoft.com
mnt-by:         MICROSOFT-MAINT
created:        2020-07-20T21:00:09Z
last-modified:  2020-07-20T21:00:09Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 51.0.0.0/8

Range	ASN	Company	Num of IPs
51.186.0.0/15	AS5607	SKY UK Limited	131,072
51.176.0.0/15	AS16509	A100 ROW Inc	131,072
51.236.0.0/15	AS16509	A100 ROW Inc	131,072
51.182.0.0/15	AS5607	SKY UK Limited	131,072
51.158.0.0/15	AS12876	Scaleway	131,072
51.204.0.0/15	AS16509	A100 ROW Inc	131,072
51.220.0.0/15	AS16509	A100 ROW Inc	131,072
51.232.0.0/15	AS16509	A100 ROW Inc	131,072
51.34.0.0/15	AS16509	A100 Row Inc	131,072
51.174.0.0/15	AS29695	Altibox AS	131,072
51.6.0.0/15	AS6871		131,072
51.16.0.0/15	AS16509	A100 Row Inc	131,072
51.72.0.0/15	AS16509	A100 Row Inc	131,072
51.192.0.0/15	AS16509	A100 ROW Inc	131,072
51.208.0.0/15	AS16509	A100 ROW Inc	131,072
51.216.0.0/15	AS16509	A100 ROW Inc	131,072
51.226.0.0/15	AS16509	A100 Row Inc	131,072
51.228.0.0/15	AS16509	A100 ROW Inc	131,072
51.206.0.0/15	AS16509	A100 Row Inc	131,072
51.248.0.0/15	AS16509	A100 ROW Inc	131,072
51.48.0.0/15	AS16509	A100 ROW Inc	131,072
51.252.0.0/15	AS25019	Saudi Telecom Company JSC	131,072
51.188.0.0/15	AS16509	A100 ROW Inc	131,072
51.190.0.0/15	AS5607	SKY UK Limited	131,072
51.4.0.0/15	AS8075	Microsoft Deutschland MCIO GmbH	131,072
51.200.0.0/15	AS16509	A100 ROW Inc	131,072
51.196.0.0/15	AS16509	A100 ROW Inc	131,072
51.94.0.0/15	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
51.164.0.0/15	AS16509	A100 ROW Inc	131,072
51.172.0.0/15	AS16509	A100 ROW Inc	131,072
51.212.0.0/15	AS16509	A100 ROW Inc	131,072
51.214.0.0/15	AS16509	A100 Row Inc	131,072
51.168.0.0/15	AS16509	A100 ROW Inc	131,072
51.224.0.0/15	AS16509	A100 ROW Inc	131,072
51.254.0.0/15	AS16276	OVH SAS	131,072
51.166.0.0/15	AS16509	A100 Row Inc	131,072
51.180.0.0/15	AS16509	A100 ROW Inc	131,072
51.202.0.0/15	AS16509	A100 Row Inc	131,072
51.184.0.0/15	AS16509	A100 ROW Inc	131,072
51.244.0.0/15	AS16509	A100 ROW Inc	131,072
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
51.118.0.0/16	AS16509	A100 ROW Inc	65,536
51.150.0.0/16	AS16509	A100 Row Inc	65,536

Hosted domains

There are 3,690 domain names hosted across 441 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
51.11.51.253	abacuslettings.co.uk	406
51.11.57.227	veday50p.org	233
51.11.56.120	mbcareersandjobs.com	219
51.11.191.81	saperenow.xyz	155
51.11.34.38	berkshireinventories.co.uk	152
51.11.17.100	nottinghamshirehealthcare.nhs.uk	118
51.11.163.158	bodycote.com	104
51.11.220.216	lfihfpa.lol	100
51.11.17.98	slam.nhs.uk	88
51.11.27.106	josephtimms.com	72
51.11.181.18	greyssr.co.uk	71
51.11.21.103	creditcardrollwarehouse.co.uk	68
51.11.20.152	ventureastute365.com	67
51.11.172.212	esafetytrainingonline.co.uk	58
51.11.238.246	evertree.fr	50
51.11.3.236	finning.com	50
51.11.1.83	convatec.ca	48
51.11.17.97	bwc.nhs.uk	46
51.11.52.203	samuelward.co.uk	44
51.11.172.17	manorparkclassicsonline.co.uk	40

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

11,061 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
51.11.215.174	AS8075 Microsoft Corporation	`0.17ms` from Paris, FR
51.11.186.233	AS8075 Microsoft Corporation	`0.20ms` from London, GB
51.11.185.135	AS8075 Microsoft Corporation	`0.20ms` from London, GB
51.11.184.90	AS8075 Microsoft Corporation	`0.20ms` from London, GB
51.11.207.38	AS8075 Microsoft Corporation	`0.24ms` from Paris, FR
51.11.202.101	AS8075 Microsoft Corporation	`0.19ms` from Paris, FR
51.11.226.179	AS8075 Microsoft Corporation	`0.17ms` from Paris, FR
51.11.223.14	AS8075 Microsoft Corporation	`0.19ms` from Paris, FR
51.11.229.50	AS8075 Microsoft Corporation	`0.18ms` from Paris, FR
51.11.200.43	AS8075 Microsoft Corporation	`0.17ms` from Paris, FR
51.11.188.12	AS8075 Microsoft Corporation	`0.19ms` from London, GB
51.11.167.2	AS8075 Microsoft Corporation	`0.19ms` from London, GB
51.11.205.74	AS8075 Microsoft Corporation	`0.19ms` from Paris, FR
51.11.241.138	AS8075 Microsoft Corporation	`0.18ms` from Paris, FR
51.11.227.3	AS8075 Microsoft Corporation	`0.16ms` from Paris, FR
51.11.220.236	AS8075 Microsoft Corporation	`0.18ms` from Paris, FR
51.11.237.61	AS8075 Microsoft Corporation	`0.18ms` from Paris, FR
51.11.221.79	AS8075 Microsoft Corporation	`0.16ms` from Paris, FR
51.11.192.40	AS8075 Microsoft Corporation	`0.19ms` from Paris, FR
51.11.243.128	AS8075 Microsoft Corporation	`0.21ms` from Paris, FR
51.11.172.97	AS8075 Microsoft Corporation	`0.20ms` from London, GB
51.11.206.130	AS8075 Microsoft Corporation	`0.19ms` from Paris, FR
51.11.190.215	AS8075 Microsoft Corporation	`0.20ms` from London, GB
51.11.183.74	AS8075 Microsoft Corporation	`0.35ms` from London, GB
51.11.210.138	AS8075 Microsoft Corporation	`0.17ms` from Paris, FR

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
91.39.42.79	AS3320 Deutsche Telekom AG	`3.34ms` from Berlin, DE
174.111.247.79	AS11426 Charter Communications Inc	`9.09ms` from Charlotte, US
52.154.60.255	AS8075 Microsoft Corporation	`0.24ms` from Des Moines, US
14.172.117.223	AS45899 VNPT Corp	`3.31ms` from Ho Chi Minh City, VN
171.246.185.239	AS7552 Viettel Group	`1.36ms` from Ho Chi Minh City, VN
49.75.17.255	AS4134 CHINANET-BACKBONE	`5.18ms` from Nanjing, CN
108.54.176.63	AS701 Verizon Business	`2.48ms` from New York City, US
190.34.250.127	AS11556 Cable & Wireless Panama	`1.67ms` from Panama, PA
118.27.9.127	AS7506 GMO Internet Group, Inc.	`0.56ms` from Tokyo, JP
104.193.173.191	AS54643 Idigital Internet Inc.	`0.16ms` from Vancouver, CA
109.187.6.79	AS28812 PJSC Bashinformsvyaz	`8.95ms` from Yekaterinburg, RU
217.165.172.47	AS5384 Emirates Internet	`3.58ms` from Al Fujairah City, AE
113.53.17.223	AS23969 TOT Public Company Limited	`8.21ms` from Bangkok, TH
122.164.254.111	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.87ms` from Chennai, IN
182.30.54.175	AS8987 Amazon Data Services Ireland Ltd	`0.78ms` from Columbus, US
87.48.155.191	AS3292 TDC Holding A/S	`2.23ms` from Copenhagen, DK
20.24.219.143	AS8075 Microsoft Corporation	`0.55ms` from Hong Kong, HK
117.68.88.143	AS140527 China Telecom	`4.47ms` from Huai'an, CN
39.45.167.95	AS17557 Pakistan Telecommunication Company Limited	`6.32ms` from Lahore, PK
139.64.23.175	AS25019 Saudi Telecom Company JSC	`3.79ms` from Manama, BH
69.249.183.175	AS7922 Comcast Cable Communications, LLC	`6.76ms` from New York City, US
176.136.1.223	AS5410 Bouygues Telecom SA	`6.70ms` from Paris, FR
209.200.109.143	AS14992 NewtekOne, Inc.	`2.06ms` from Phoenix, US
201.229.254.207	AS6400 Compañía Dominicana de Teléfonos S. A.	`2.77ms` from Santo Domingo, DO
115.66.70.255	AS9506 Singtel Fibre Broadband	`1.28ms` from Singapore, SG

Traceroute

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

traceroute -a -n -q1 -f4 51.10.11.235

traceroute to 51.10.11.235 (51.10.11.235): 64 hops max, 52 byte packets

4 [] 103.203.158.102 0.563 ms

5 [AS8075] 51.10.11.235 0.525 ms

Measurement taken from

IPinfo ProbeNet in Hong Kong, HK

On October 30th 2025

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