1. All IP Ranges
  2. 51.0.0.0/8
  3. AS8075  | 51.10.0.0/15

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
51.6.0.0/15 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 3,476 domain names hosted across 436 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 403
51.11.57.227 coinportfolio.org 247
51.11.56.120 mbcareersandjobs.com 194
51.11.191.81 saperenow.xyz 170
51.11.17.100 nottinghamshirehealthcare.nhs.uk 117
51.11.220.216 lfihfpa.lol 100
51.11.17.98 slam.nhs.uk 90
51.11.181.18 greyssr.co.uk 80
51.11.27.106 dwberryman.uk 70
51.11.20.152 innovativeenterprisingcloud.com 67
51.11.21.103 tillrolllimited.com 67
51.11.172.212 esafetytrainingonline.co.uk 58
51.11.3.236 finning.com 57
51.11.238.246 evertree-systems.fr 50
51.11.1.83 convatec.ca 48
51.11.17.97 bwc.nhs.uk 45
51.11.52.203 samuelward.co.uk 45
51.11.163.158 bodycote.com 43
51.11.31.191 biosearchtechnologies.com 43
51.11.140.143 souterinvestments.com 42

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

11,130 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
51.10.33.102 AS8075 Microsoft Corporation 0.43ms from Ashburn, US
51.10.0.113 AS8075 Microsoft Corporation 0.23ms from Kuala Lumpur, MY
51.10.16.195 AS8075 Microsoft Corporation 0.19ms from London, GB
51.10.19.69 AS8075 Microsoft Corporation 0.42ms from Sydney, AU
51.10.49.21 AS8075 Microsoft Corporation 0.15ms from Johannesburg, ZA
51.10.48.41 AS8075 Microsoft Corporation 0.64ms from Melbourne, AU
51.10.9.170 AS8075 Microsoft Corporation 0.32ms from Jakarta, ID
51.10.20.107 AS8075 Microsoft Corporation 0.35ms from Brussels, BE
51.10.43.181 AS8075 Microsoft Corporation 0.49ms from Quincy, US
51.10.3.212 AS8075 Microsoft Corporation 0.26ms from Santiago de Queretaro, MX
51.10.28.0 AS8075 Microsoft Corporation 1.06ms from Ashburn, US
51.10.26.231 AS8075 Microsoft Corporation 0.27ms from Dallas, US
51.10.51.98 AS8075 Microsoft Corporation 0.17ms from London, GB
51.10.1.65 AS8075 Microsoft Corporation 0.31ms from Los Angeles, US
51.10.34.218 AS8075 Microsoft Corporation 0.24ms from Santiago de Queretaro, MX
51.10.36.117 AS8075 Microsoft Corporation 0.25ms from Santiago de Queretaro, MX
51.10.15.147 AS8075 Microsoft Corporation 0.53ms from Chicago, US
51.10.21.159 AS8075 Microsoft Corporation 0.58ms from Stockholm, SE
51.10.7.234 AS8075 Microsoft Corporation 0.23ms from Dallas, US
51.10.23.117 AS8075 Microsoft Corporation 0.25ms from London, GB
51.10.32.223 AS8075 Microsoft Corporation 0.23ms from Milan, IT
51.10.37.227 AS8075 Microsoft Corporation 0.34ms from Santiago de Queretaro, MX
51.10.38.144 AS8075 Microsoft Corporation 0.41ms from Ashburn, US
51.10.17.27 AS8075 Microsoft Corporation 0.29ms from Osaka, JP
51.10.5.134 AS8075 Microsoft Corporation 0.41ms from Sydney, AU

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
20.107.65.79 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
52.174.136.79 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
161.148.126.31 AS10954 SERVICO FEDERAL DE PROCESSAMENTO DE DADOS - SERPRO 0.72ms from Brasilia, BR
101.188.132.15 AS1221 Telstra Limited 6.88ms from Brisbane, AU
102.244.220.255 AS36912 Orange Cameroun SA 4.02ms from Douala, CM
37.197.139.223 AS1257 Tele2 Sverige AB 3.87ms from Falkenberg, SE
85.37.254.175 AS3269 Telecom Italia S.p.A. 7.89ms from Milan, IT
169.38.13.191 AS36351 IBM Cloud 19.02ms from Mumbai, IN
153.101.196.31 AS4837 CHINA UNICOM China169 Backbone 2.28ms from Nanjing, CN
86.205.30.255 AS3215 Orange S.A. 8.46ms from Paris, FR
176.143.45.207 AS5410 Bouygues Telecom SA 3.33ms from Paris, FR
74.221.218.143 AS174 Cogent Communications, LLC 1.06ms from Phoenix, US
177.80.12.207 AS28573 Claro NXT Telecomunicacoes Ltda 5.53ms from Sao Paulo, BR
119.149.194.159 AS38091 LG HelloVision Corp. 1.33ms from Seoul, KR
150.136.226.239 AS31898 Oracle Corporation 0.40ms from Ashburn, US
212.145.42.127 AS12430 VODAFONE ESPANA S.A.U. 7.48ms from Barcelona, ES
68.44.152.207 AS7922 Comcast Cable Communications, LLC 10.87ms from Chicago, US
14.152.42.143 AS4134 CHINANET-BACKBONE 3.79ms from Guangzhou, CN
95.230.56.255 AS3269 Telecom Italia S.p.A. 3.40ms from Milan, IT
111.78.236.191 AS4134 CHINANET-BACKBONE 3.57ms from Nanchang, CN
131.129.93.143 AS4685 Asahi Net 2.19ms from Osaka, JP
13.220.6.127 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
76.100.122.143 AS7922 Comcast Cable Communications, LLC 6.99ms from Ashburn, US
71.207.137.31 AS7922 Comcast Cable Communications, LLC 10.25ms from Ashburn, US
179.13.38.31 AS27831 Colombia Móvil 18.47ms from Bogota, CO

Traceroute

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

$
traceroute -a -n -q1 -f7 51.11.241.87
traceroute to 51.11.241.87 (51.11.241.87): 64 hops max, 52 byte packets
7 [AS8075] 104.44.14.239 6.575 ms
8 [AS8075] 51.10.2.70 40.623 ms
9 [AS8075] 104.44.34.12 204.364 ms
10 [AS8075] 104.44.19.170 204.306 ms
11 [AS8075] 51.10.34.98 204.698 ms
12 [AS8075] 104.44.49.26 204.977 ms
13 [AS8075] 51.10.34.81 203.944 ms
14 [AS8075] 104.44.31.75 204.497 ms
15 [AS8075] 104.44.16.113 204.314 ms
16 [AS8075] 51.10.33.125 204.131 ms
17 [AS8075] 51.10.34.252 204.655 ms
18 [AS8075] 51.10.23.120 204.4 ms
19 [AS8075] 104.44.7.208 251.663 ms
20 [AS8075] 104.44.11.230 203.477 ms
21 *
22 [AS8075] 51.11.241.87 201.335 ms
Measurement taken from IPinfo ProbeNet in Curitiba, BR
On

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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.

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