172.56.178.0/23

AS21928 · T-Mobile USA, Inc.

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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 172.56.178.0/23

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
77.171.173.183	AS1136 KPN B.V.	`1.42ms` from Amsterdam, NL
13.93.109.199	AS8075 Microsoft Corporation	`0.23ms` from Amsterdam, NL
44.205.251.119	AS14618 Amazon.com, Inc.	`0.48ms` from Ashburn, US
140.226.99.39	AS16519 University of Colorado Denver	`1.19ms` from Denver, US
68.40.135.71	AS7922 Comcast Cable Communications, LLC	`7.31ms` from Flint, US
141.12.50.71	AS28714 Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.	`1.04ms` from Frankfurt am Main, DE
39.33.10.87	AS17557 Pakistan Telecommunication Company Limited	`16.28ms` from Islamabad, PK
206.172.109.167	AS577 Bell Canada	`1.66ms` from Montreal, CA
46.63.218.247	AS12389 PJSC Rostelecom	`18.23ms` from Moscow, RU
176.107.251.135	AS57798 IT-Net ltd.	`9.66ms` from Moscow, RU
68.132.20.199	AS701 Verizon Business	`3.00ms` from New York City, US
46.50.148.135	AS21127 Joint Stock Company TransTeleCom	`7.42ms` from Novosibirsk, RU
125.30.151.23	AS2497 Internet Initiative Japan Inc.	`4.56ms` from Osaka, JP
64.123.93.199	AS7018 AT&T Enterprises, LLC	`2.64ms` from San Antonio, US
156.52.51.135	AS29695 Lyse Tele AS	`3.28ms` from Sandefjord, NO
39.109.202.199	AS55430 Starhub Ltd	`1.69ms` from Singapore, SG
35.227.185.167	AS396982 Google LLC	`0.13ms` from The Dalles, US
116.208.227.103	AS4134 CHINANET-BACKBONE	`9.39ms` from Wuhan, CN
46.33.203.167	AS8585 Crnogorski Telekom a.d.Podgorica	`13.42ms` from Zagreb, HR
18.205.7.199	AS14618 Amazon.com, Inc.	`0.77ms` from Ashburn, US
23.216.253.247	AS16625 Akamai Technologies, Inc.	`0.11ms` from Brussels, BE
83.113.204.39	AS3215 Orange S.A.	`10.13ms` from Frankfurt am Main, DE
91.208.111.199	AS47744 XTEND SOLUTIONS LTD	`0.55ms` from London, GB
84.66.137.167	AS5378 Vodafone Limited	`3.12ms` from Manchester, GB
190.29.98.87	AS13489 UNE EPM TELECOMUNICACIONES S.A.	`1.31ms` from Medellin, CO

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 172.56.179.68

traceroute to 172.56.179.68 (172.56.179.68): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.069 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

On March 20th 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.

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