All IP Ranges
172.0.0.0/8
AS8075 | 172.128.0.0/11

172.128.0.0/11

AS8075 · Microsoft Corporation

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Summary

Country	United Kingdom
Domain	microsoft.com
ASN	AS8075
Registry	APNIC
ID	UK-MICROSOFT-20000324

WHOIS Details

inetnum:        172.128.0.0 - 172.215.255.255
netname:        UK-MICROSOFT-20000324
country:        GB
org:            ORG-MA42-RIPE
admin-c:        DH5439-RIPE
tech-c:         MRPA3-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MICROSOFT-MAINT
mnt-lower:      MICROSOFT-MAINT
mnt-domains:    MICROSOFT-MAINT
mnt-routes:     MICROSOFT-MAINT
created:        2024-05-16T09:38:13Z
last-modified:  2024-05-16T09:38:13Z
source:         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
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 # Filtered

role:           Microsoft Routing, Peering, and DNS
address:        One Microsoft Way
address:        Redmond, WA 98052
nic-hdl:        MRPA3-RIPE
mnt-by:         MICROSOFT-MAINT
created:        2014-08-26T16:25:24Z
last-modified:  2014-08-26T16:25:24Z
source:         RIPE # Filtered

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 172.0.0.0/8

Range	ASN	Company	Num of IPs
172.32.0.0/11	AS21928	T-Mobile USA, Inc.	2,097,152
172.0.0.0/12	AS7018	AT&T Enterprises, LLC	1,048,576
172.224.0.0/12	AS36183	Akamai Technologies, Inc.	1,048,576
172.224.0.0/12	AS20940	Akamai Technologies, Inc.	1,048,576
172.232.0.0/13	AS20940	Linode	524,288
172.112.0.0/13	AS20001	Charter Communications Inc	524,288
172.232.0.0/13	AS63949	Linode	524,288
172.248.0.0/14	AS20001	Charter Communications Inc	262,144
172.72.0.0/14	AS11426	Charter Communications Inc	262,144
172.88.0.0/14	AS20001	Charter Communications Inc	262,144
172.124.0.0/14	AS7018	AT&T Enterprises, LLC	262,144
172.76.0.0/14	AS5650	Frontier Communications of America, Inc.	262,144
172.242.0.0/15	AS7155	ViaSat,Inc.	131,072
172.100.0.0/15	AS11351	Charter Communications Inc	131,072
172.122.0.0/15	AS2497	Internet Initiative Japan Inc.	131,072
172.254.0.0/16	AS12271	Charter Communications Inc	65,536
172.247.0.0/16	AS134176	CloudRadium L.L.C	65,536
172.247.0.0/16	AS132839	CloudRadium L.L.C	65,536
172.217.0.0/16	AS396982	Google LLC	65,536
172.253.0.0/16	AS15169	Google LLC	65,536
172.92.0.0/16	AS11404	Wave Broadband	65,536
172.253.0.0/16	AS396982	Google LLC	65,536
172.254.0.0/16	AS401827	Charter Communications Inc	65,536
172.247.0.0/16	AS40065	CloudRadium L.L.C	65,536
172.217.0.0/16	AS15169	Google LLC	65,536
172.109.0.0/16	AS5650	Frontier Communications Corporation	65,536
172.108.0.0/16	AS5650	Frontier Communications Corporation	65,536
172.95.0.0/16	AS5650	Frontier Communications Corporation	65,536
172.92.0.0/16	AS54858	Wave Broadband	65,536
172.247.0.0/16	AS21859	CloudRadium L.L.C	65,536
172.244.0.0/16	AS7922	Comcast Cable Communications, LLC	65,536
172.103.128.0/17	AS25668	Cipherkey Exchange Corp.	32,768
172.93.128.0/17	AS20278	Nexeon Technologies, Inc.	32,768
172.94.128.0/17	AS135354	JTC Summit 8 Jurong Town Hall Road # 24-05	32,768
172.85.128.0/17	AS16504	Granite Telecommunications LLC	32,768
172.80.0.0/17	AS22552	eSited Solutions	32,768
172.80.128.0/17	AS197207	Mobile Communication Company of Iran PLC	32,768
172.82.192.0/18	AS15224	Adobe Inc.	16,384
172.111.64.0/18	AS54113	Fastly, Inc.	16,384
172.87.128.0/18	AS11427	Charter Communications Inc	16,384
172.84.192.0/18	AS14434	VI POWERNET, LLC	16,384
172.80.128.0/18	AS197207	Mobile Communication Company of Iran PLC	16,384
172.80.192.0/18	AS197207	Mobile Communication Company of Iran PLC	16,384
172.82.192.0/18	AS16509	Adobe Inc.	16,384
172.96.192.0/18	AS25820	Cluster Logic Inc	16,384
172.102.64.0/18	AS5650	Frontier Communications Corporation	16,384
172.84.0.0/18	AS26531	NEXUSDS.COM	16,384
172.109.0.0/18	AS5650	Frontier Communications Solutions	16,384
172.81.192.0/18	AS45090	Tencent Cloud Computing (Beijing) Co., Ltd	16,384
172.108.0.0/19	AS5650	Frontier Communications Solutions	8,192

Hosted domains

There are 47 domain names hosted across 29 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.129.25.170	alleganbroadband.com	16
172.128.137.126	stephanjoubert.com	6
172.128.112.254	ntmtech.com	2
172.138.70.242	playactivate.at	2
172.128.26.60	alkymi-dev.cloud	1
172.146.160.157	leslulus.fr	1
172.128.0.81	yels.me	1
172.132.43.134	alkymi-services.link	1
172.134.22.254	anyresan.com	1
172.138.112.60	questralhelicopters.com	1
172.129.77.103	jerseygee.shop	1
172.129.234.103	tertonsogyal.com	1
172.128.84.36	alkymi-dev.cloud	1
172.128.8.213	sentientartist.com	1
172.158.0.12	isna.kz	1
172.128.39.200	alkymi-dev.cloud	1
172.156.4.7	lcx4sx.online	1
172.132.129.130	triggerfishadvisory.com	1
172.142.65.145	studentmedicalinsurance.ca	1
172.132.95.248	alkymi-services.link	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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
23.208.204.91	AS20940 Akamai International B.V.	`0.73ms` from Chicago, US
3.149.12.187	AS16509 Amazon.com, Inc.	`0.18ms` from Columbus, US
47.185.64.75	AS5650 Frontier Communications of America, Inc.	`1.55ms` from Dallas, US
75.216.245.75	AS6167 Verizon Business	`8.63ms` from Greenwood Village, US
110.4.15.27	AS38819 HKCSL GPRS NETWORK	`13.85ms` from Hong Kong, HK
85.139.26.251	AS2860 NOS COMUNICACOES, S.A.	`6.68ms` from Lisbon, PT
13.200.73.75	AS16509 Amazon.com, Inc.	`0.14ms` from Mumbai, IN
189.237.249.171	AS8151 UNINET	`14.89ms` from Phoenix, US
88.100.121.187	AS5610 O2 Czech Republic, a.s.	`6.51ms` from Prague, CZ
44.217.42.203	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
3.89.21.43	AS14618 Amazon.com, Inc.	`0.39ms` from Reston, US
67.164.32.203	AS7922 Comcast Cable Communications, LLC	`5.53ms` from San Jose, US
177.152.82.75	AS52527 IWNET TELECOM LTDA ME	`1.06ms` from Sao Paulo, BR
14.65.230.27	AS4766 Korea Telecom	`1.78ms` from Seoul, KR
39.119.115.123	AS9318 SK Broadband Co Ltd	`3.67ms` from Seoul, KR
153.204.181.43	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.67ms` from Tokyo, JP
162.246.152.11	AS46426 HART COMMUNICATIONS, INC.	`2.50ms` from Atlanta, US
192.35.158.91	AS16509 Amazon.com, Inc.	`0.03ms` from Bangkok, TH
218.89.54.155	AS4134 CHINANET-BACKBONE	`6.98ms` from Chengdu, CN
87.172.233.139	AS3320 Deutsche Telekom AG	`4.22ms` from Frankfurt am Main, DE
59.44.236.27	AS4134 CHINANET-BACKBONE	`3.45ms` from Liaoyang, CN
18.175.160.123	AS16509 Amazon.com, Inc.	`0.68ms` from London, GB
37.183.155.11	AS30722 Vodafone Italia S.p.A.	`7.33ms` from Milan, IT
91.162.219.219	AS12322 Free SAS	`16.80ms` from Paris, FR
175.118.53.155	AS9318 SK Broadband Co Ltd	`2.05ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -m7 172.138.242.60

traceroute to 172.138.242.60 (172.138.242.60): 7 hops max, 52 byte packets

1 [AS200651] 37.228.129.2 0.423 ms

2 *

3 [AS12552] 146.247.202.159 7.178 ms

4 [AS8075] 104.44.197.189 7.479 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Helsinki, FI

On November 14th 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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