1. All IP Ranges
  2. 51.0.0.0/8
  3. AS8075  | 51.12.0.0/15

51.12.0.0/15

AS8075  ·  Microsoft Corporation

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Summary

Country unknown
Domain microsoft.com
ASN AS8075
Registry RIPE
ID CLOUD

WHOIS Details

inetnum:        51.12.0.0 - 51.12.255.255
netname:        cloud
country:        EU
admin-c:        DH5439-RIPE
tech-c:         MRPA3-RIPE
status:         LEGACY
mnt-by:         MICROSOFT-MAINT
created:        2025-09-05T18:13:17Z
last-modified:  2025-09-05T18:13:17Z
source:         RIPE
abuse-email:    [email protected]
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:         [email protected]
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:          51.12.0.0/15
origin:         AS8075
descr:          Microsoft
notify:         [email protected]
mnt-by:         MICROSOFT-MAINT
created:        2020-07-22T15:00:57Z
last-modified:  2020-07-22T15:00:57Z
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 6,333 domain names hosted across 455 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
51.12.31.0 audistockholm.se 562
51.12.80.48 fulgentin.se 407
51.13.160.245 pxneams.lol 376
51.13.104.222 malviktrafikkskole.no 352
51.12.31.3 aktiespararna.se 260
51.12.31.8 vaccindirekt.se 233
51.12.31.1 lo.se 230
51.12.31.2 hindenburg.com 219
51.13.16.58 arran.no 202
51.13.72.20 filmfondnord.no 194
51.12.31.13 parfym.se 159
51.13.107.20 bim2share.no 141
51.12.31.7 tabussen.nu 140
51.13.36.62 smartvatten.de 136
51.13.74.50 modum-bad.no 128
51.12.31.5 qing.se 127
51.12.48.106 tranasrostfria.se 126
51.12.31.4 medley.se 111
51.12.80.214 ringkobingskjern-shop.dk 110
51.13.105.46 bbqshop.no 103

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

7,442 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
51.12.162.65 AS8075 Microsoft Corporation 3.26ms from Copenhagen, DK
51.12.169.210 AS8075 Microsoft Corporation 2.46ms from Copenhagen, DK
51.12.159.251 AS8075 Microsoft Corporation 0.22ms from Gaevle, SE
51.13.54.175 AS8075 Microsoft Corporation 1.82ms from Sandefjord, NO
51.13.169.16 AS8075 Microsoft Corporation 2.22ms from Sandefjord, NO
51.13.33.69 AS8075 Microsoft Corporation 1.77ms from Sandefjord, NO
51.13.50.82 AS8075 Microsoft Corporation 1.89ms from Sandefjord, NO
51.13.53.175 AS8075 Microsoft Corporation 1.78ms from Sandefjord, NO
51.13.66.126 AS8075 Microsoft Corporation 1.84ms from Sandefjord, NO
51.12.202.173 AS8075 Microsoft Corporation 2.44ms from Copenhagen, DK
51.12.221.104 AS8075 Microsoft Corporation 0.25ms from Gaevle, SE
51.12.153.162 AS8075 Microsoft Corporation 0.21ms from Gaevle, SE
51.12.97.93 AS8075 Microsoft Corporation 0.44ms from Gaevle, SE
51.13.61.20 AS8075 Microsoft Corporation 1.79ms from Sandefjord, NO
51.13.84.145 AS8075 Microsoft Corporation 1.80ms from Sandefjord, NO
51.13.101.121 AS8075 Microsoft Corporation 1.91ms from Sandefjord, NO
51.13.55.48 AS8075 Microsoft Corporation 1.78ms from Sandefjord, NO
51.13.97.190 AS8075 Microsoft Corporation 1.98ms from Sandefjord, NO
51.13.26.174 AS8075 Microsoft Corporation 1.83ms from Sandefjord, NO
51.12.131.128 AS8075 Microsoft Corporation 0.21ms from Gaevle, SE
51.13.28.70 AS8075 Microsoft Corporation 1.79ms from Sandefjord, NO
51.13.148.42 AS8075 Microsoft Corporation 8.00ms from Sandefjord, NO
51.13.76.11 AS8075 Microsoft Corporation 1.85ms from Sandefjord, NO
51.13.21.33 AS8075 Microsoft Corporation 1.84ms from Sandefjord, NO
51.13.79.173 AS8075 Microsoft Corporation 1.91ms from Sandefjord, NO

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
37.150.105.191 AS9198 JSC Kazakhtelecom 6.85ms from Astana, KZ
86.59.223.175 AS5483 Magyar Telekom Plc. 0.85ms from Budapest, HU
1.59.119.159 AS4837 CHINA UNICOM China169 Backbone 10.57ms from Changchun, CN
97.243.114.79 AS6167 Verizon Business 11.96ms from Chicago, US
52.49.31.31 AS16509 Amazon.com, Inc. 0.17ms from Dublin, IE
84.168.149.127 AS3320 Deutsche Telekom AG 3.43ms from Duesseldorf, DE
80.69.98.111 AS3209 Vodafone GmbH 4.41ms from Frankfurt am Main, DE
60.20.3.15 AS4837 CHINA UNICOM China169 Backbone 8.27ms from Liaoyang, CN
103.59.56.255 AS45117 Ishan's Network 8.71ms from Mumbai, IN
15.188.21.79 AS16509 Amazon.com, Inc. 0.17ms from Paris, FR
13.216.19.15 AS14618 Amazon.com, Inc. 0.23ms from Reston, US
210.204.233.111 AS4766 Korea Telecom 1.48ms from Seoul, KR
110.34.87.207 AS9757 CMB DONDAEMOON BROADCASTING 1.94ms from Seoul, KR
27.17.60.159 AS4134 CHINANET-BACKBONE 0.95ms from Wuhan, CN
73.137.75.63 AS7922 Comcast Cable Communications, LLC 5.29ms from Atlanta, US
54.186.254.79 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
71.233.125.239 AS7922 Comcast Cable Communications, LLC 9.43ms from Boston, US
209.162.37.15 AS7029 Windstream Communications LLC 7.05ms from Dallas, US
186.223.147.127 AS28573 Claro NXT Telecomunicacoes Ltda 17.86ms from Fortaleza, BR
80.146.34.223 AS3320 Deutsche Telekom AG 3.33ms from Frankfurt am Main, DE
147.13.202.31 AS197425 Saab AB 10.25ms from Goeteborg, SE
115.206.250.207 AS4134 CHINANET-BACKBONE 5.70ms from Hangzhou, CN
50.60.44.239 AS25019 Saudi Telecom Company JSC 4.01ms from Jeddah, SA
94.178.237.79 AS6849 JSC "Ukrtelecom" 4.65ms from Kyiv, UA
92.18.3.175 AS13285 TalkTalk Communications Limited 5.54ms from London, GB

Traceroute

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

$
traceroute -a -n -q1 51.12.14.43
traceroute to 51.12.14.43 (51.12.14.43): 64 hops max, 52 byte packets
1 [AS57403] 188.241.240.1 11.265 ms
2 *
3 *
4 [AS8075] 104.44.197.201 12.391 ms
5 [AS8075] 104.44.41.51 34.919 ms
6 [AS8075] 104.44.23.133 41.558 ms
7 [AS8075] 104.44.30.114 41.541 ms
8 [AS8075] 104.44.33.92 41.075 ms
9 *
10 *
11 *
12 *
13 [AS8075] 51.12.14.43 40.863 ms
Measurement taken from IPinfo ProbeNet in Bucharest, RO
On

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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