172.56.238.0/23

AS21928 · T-Mobile USA, Inc.

Need more data or want to access it via API or data downloads? Sign up to get free access

Summary

Country	United States
Domain	t-mobile.com
ASN	AS21928
Parent Range	172.32.0.0/11
Registry	ARIN
ID	TMO9

WHOIS Details

NetHandle:      NET-172-32-0-0-1
OrgID:          TMOBI
Parent:         NET-172-0-0-0-0
NetName:        TMO9
NetRange:       172.32.0.0 - 172.63.255.255
NetType:        allocation
Comment:        Geofeed https://raw.githubusercontent.com/tmobile/tmus-geofeed/main/tmus-geo-ip.txt
RegDate:        2012-09-18
Updated:        2020-11-18
Source:         ARIN


OrgID:          TMOBI
OrgName:        T-Mobile USA, Inc.
CanAllocate:    
Street:         12920 SE 38th Street
City:           Bellevue
State/Prov:     WA
Country:        US
PostalCode:     98006
RegDate:        2003-01-02
Updated:        2017-01-28
OrgAdminHandle: DNSAD11-ARIN
OrgTechHandle:  DNSAD11-ARIN
OrgAbuseHandle: ABUSE4857-ARIN
Source:         ARIN


POCHandle:      ABUSE4857-ARIN
IsRole:         Y
LastName:       abuse
FirstName:      
Street:         12920 SE 38th Street
City:           Bellevue
State/Prov:     WA
Country:        US
PostalCode:     98006
RegDate:        2014-09-23
Updated:        2025-05-27
OfficePhone:    +1-888-662-4662
Mailbox:        abuse@t-mobile.com
Source:         ARIN


POCHandle:      DNSAD11-ARIN
IsRole:         Y
LastName:       DNS Administrators
FirstName:      
Street:         12920 SE 38th Street
City:           Bellevue
State/Prov:     WA
Country:        US
PostalCode:     98027
RegDate:        2003-01-02
Updated:        2026-01-08
OfficePhone:    +1-888-662-4662
Mailbox:        ARINtechcontact@t-mobile.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 172.56.238.0/23

Range	ASN	Company	Num of IPs
172.32.0.0/11	AS21928	T-Mobile USA, Inc.	2,097,152

Nearby Ranges

BGP prefixes that overlap with 172.56.0.0/16

Range	ASN	Company	Num of IPs
172.32.0.0/11	AS21928	T-Mobile USA, Inc.	2,097,152

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.238.82	testingjohnross.com	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
52.104.121.167	AS8075 Microsoft Corporation	`0.45ms` from Ashburn, US
48.214.121.71	AS8075 Microsoft Corporation	`0.36ms` from Boydton, US
192.3.195.119	AS36352 HostPapa	`0.14ms` from Buffalo, US
24.192.179.199	AS12083 WideOpenWest Finance LLC	`10.48ms` from Chicago, US
179.185.141.199	AS18881 TELEFÔNICA BRASIL S.A	`9.42ms` from Fortaleza, BR
1.246.50.247	AS9318 SK Broadband Co Ltd	`3.17ms` from Incheon, KR
203.82.91.23	AS10030 Celcom Axiata Berhad	`1.27ms` from Kuala Lumpur, MY
185.238.232.199	AS200845 AVATEL TELECOM, SA	`0.35ms` from Madrid, ES
88.18.146.87	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.29ms` from Madrid, ES
69.180.147.103	AS7922 Comcast Cable Communications, LLC	`7.73ms` from Minneapolis, US
95.53.246.215	AS12389 PJSC Rostelecom	`10.71ms` from Saint Petersburg, RU
128.187.12.167	AS6510 Brigham Young University	`2.01ms` from Salt Lake City, US
179.213.200.87	AS28573 Claro NXT Telecomunicacoes Ltda	`4.70ms` from Sao Paulo, BR
94.50.105.135	AS12389 PJSC Rostelecom	`19.07ms` from Yekaterinburg, RU
145.28.237.119	AS1103 SURF B.V.	`9.83ms` from Amsterdam, NL
77.165.207.55	AS1136 KPN B.V.	`0.94ms` from Amsterdam, NL
77.173.190.119	AS1136 KPN B.V.	`0.99ms` from Amsterdam, NL
77.160.198.39	AS1136 KPN B.V.	`1.17ms` from Amsterdam, NL
51.81.61.71	AS16276 OVH SAS	`1.25ms` from Ashburn, US
94.69.85.71	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`9.36ms` from Athens, GR
104.139.8.103	AS11426 Charter Communications Inc	`6.72ms` from Charlotte, US
14.107.73.55	AS4134 CHINANET-BACKBONE	`0.90ms` from Chongqing, CN
84.163.53.39	AS3320 Deutsche Telekom AG	`2.31ms` from Frankfurt am Main, DE
99.12.83.55	AS7018 AT&T Enterprises, LLC	`5.54ms` from Kansas City, US
86.21.137.215	AS5089 Virgin Media Limited	`6.94ms` 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 -m6 172.56.239.123

traceroute to 172.56.239.123 (172.56.239.123): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.172 0.173 ms

2 [AS21928] 66.94.0.89 0.614 ms

3 [AS21928] 66.94.0.88 0.587 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On March 13th 2026

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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales