172.56.192.0/21

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 172.56.192.0/21

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 5 domain names hosted across 5 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP

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
86.98.145.117	AS5384 Emirates Internet	`3.32ms` from Al Fujairah City, AE
38.48.118.197	AS397103 REV	`14.10ms` from Atlanta, US
209.169.143.5	AS11290 Cogeco Connexion inc	`19.54ms` from Beauharnois, CA
208.64.215.69	AS21952 Neill Corporation	`10.26ms` from Dallas, US
79.245.171.181	AS3320 Deutsche Telekom AG	`11.33ms` from Frankfurt am Main, DE
16.24.125.21	AS16509 Amazon.com, Inc.	`0.11ms` from Manama, BH
73.88.25.5	AS7922 Comcast Cable Communications, LLC	`7.37ms` from Minneapolis, US
112.244.161.149	AS4837 CHINA UNICOM China169 Backbone	`3.68ms` from Qingdao, CN
18.3.15.5	AS3 Massachusetts Institute of Technology	`0.78ms` from San Jose, US
52.221.162.181	AS16509 Amazon.com, Inc.	`0.12ms` from Singapore, SG
185.151.232.53	AS25222 Inmarsat Solutions B.V.	`0.89ms` from Sydney, AU
124.118.204.85	AS4134 CHINANET-BACKBONE	`12.71ms` from UEruemqi, CN
95.174.240.117	AS15600 Quickline AG	`3.12ms` from Zuerich, CH
188.251.16.101	AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`2.76ms` from Braga, PT
107.12.7.5	AS11426 Charter Communications Inc	`14.88ms` from Charlotte, US
199.218.107.117	AS600 OARnet	`5.17ms` from Columbus, US
62.227.63.149	AS3320 Deutsche Telekom AG	`7.98ms` from Frankfurt am Main, DE
88.225.233.85	AS9121 Turk Telekomunikasyon Anonim Sirketi	`8.99ms` from Izmir, TR
190.90.82.69	AS262589 SAMM TECNOLOGIA E TELECOMUNICACOES S.A	`4.69ms` from Medellin, CO
131.93.0.197	AS20115 Charter Communications LLC	`10.58ms` from Minneapolis, US
16.52.183.165	AS16509 Amazon.com, Inc.	`0.12ms` from Montreal, CA
153.192.13.53	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.55ms` from Osaka, JP
119.164.170.213	AS4837 CHINA UNICOM China169 Backbone	`6.63ms` from Qingdao, CN
78.140.204.229	AS35000 JSC "Severen-Telecom"	`0.53ms` from Saint Petersburg, RU
192.177.214.213	AS18779 EGIHosting	`0.14ms` from Santa Clara, US

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 172.56.197.154

traceroute to 172.56.197.154 (172.56.197.154): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.122 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.

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