172.56.170.0/23

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:      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


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

Overlapping Ranges

BGP prefixes that contain 172.56.170.0/23

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 are no domains currently hosted on this ASN.

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
76.122.81.167	AS7922 Comcast Cable Communications, LLC	`4.97ms` from Atlanta, US
162.239.10.55	AS7018 AT&T Enterprises, LLC	`8.21ms` from Chicago, US
24.140.181.151	AS12097 Massillon Cable Communications	`13.95ms` from Columbus, US
76.120.124.231	AS7922 Comcast Cable Communications, LLC	`2.27ms` from Denver, US
141.12.237.151	AS28714 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.	`1.04ms` from Frankfurt am Main, DE
120.196.248.247	AS9808 China Mobile Communications Group Co., Ltd.	`4.62ms` from Guangzhou, CN
175.233.203.55	AS4766 Korea Telecom	`1.94ms` from Incheon, KR
116.240.191.119	AS9443 Vocus Retail	`1.53ms` from Melbourne, AU
151.49.132.39	AS1267 WIND TRE S.P.A.	`8.69ms` from Milan, IT
78.107.232.119	AS8402 PJSC "Vimpelcom"	`1.14ms` from Moscow, RU
67.185.27.167	AS7922 Comcast Cable Communications, LLC	`1.46ms` from Seattle, US
188.252.129.7	AS31012 A1 Hrvatska d.o.o.	`6.32ms` from Zagreb, HR
34.80.103.119	AS396982 Google LLC	`0.15ms` from Chang-hua, TW
106.211.202.7	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`0.61ms` from Chennai, IN
131.246.29.135	AS199578 Rheinland-Pfaelzische Technische Universitaet Kaiserslautern-Landau	`3.56ms` from Frankfurt am Main, DE
52.191.164.119	AS8075 Microsoft Corporation	`0.17ms` from Quincy, US
136.24.1.215	AS19165 Webpass Inc.	`1.29ms` from Santa Clara, US
115.120.197.119	AS55990 Huawei Cloud Service data center	`3.17ms` from Suzhou, CN
181.26.18.71	AS22927 Telefonica de Argentina	`1.74ms` from Buenos Aires, AR
108.61.108.39	AS20473 The Constant Company, LLC	`0.06ms` from Dallas, US
168.195.11.87	AS265418 MINGO NET COMUNICACAO LTDA ME	`0.57ms` from Joao Pessoa, BR
94.8.203.151	AS5607 Sky UK Limited	`5.57ms` from London, GB
137.103.62.39	AS11776 Breezeline	`5.81ms` from Miami, US
189.224.159.119	AS8151 UNINET	`2.11ms` from Monterrey, MX
87.181.175.103	AS3320 Deutsche Telekom AG	`8.42ms` from Nuernberg, DE

Traceroute

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

traceroute -a -n -q1 -f4 -m7 172.56.171.31

traceroute to 172.56.171.31 (172.56.171.31): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.093 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, CN

On March 22nd 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