172.56.112.0/21

AS21928 · T-Mobile USA, Inc.

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Summary

Country	United States
Domain	t-mobile.com
ASN	AS21928
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
OriginAS:       21928
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:        2025-01-09
OfficePhone:    +1-888-662-4662
Mailbox:        ARINtechcontact@t-mobile.com
Source:         ARIN

Hosted domains

There are 4 domain names hosted across 4 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

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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
23.109.40.229	AS7979 Servers.com, Inc.	`0.47ms` from Amsterdam, NL
190.27.153.181	AS19429 ETB - Colombia	`0.89ms` from Bogota, CO
34.132.53.197	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
73.229.99.5	AS7922 Comcast Cable Communications, LLC	`8.11ms` from Denver, US
91.6.117.37	AS3320 Deutsche Telekom AG	`3.65ms` from Duesseldorf, DE
193.70.37.181	AS16276 OVH SAS	`3.01ms` from Frankfurt am Main, DE
118.31.65.117	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.61ms` from Hangzhou, CN
76.223.105.37	AS16509 Amazon.com, Inc.	`0.04ms` from Lagos, NG
39.152.222.133	AS56044 China Mobile communications corporation	`9.35ms` from Liaoyang, CN
188.37.111.5	AS12353 Vodafone Portugal	`6.46ms` from Lisbon, PT
75.113.168.85	AS33363 Charter Communications, Inc	`7.48ms` from Los Angeles, US
195.36.130.165	AS5410 Bouygues Telecom SA	`8.32ms` from Marseille, FR
64.80.254.133	AS7029 Windstream Communications LLC	`0.44ms` from Miami, US
92.241.163.85	AS199420 OOO Fly Engeneering Group	`0.92ms` from Moscow, RU
91.222.211.197	AS48478 Vostok Telecom Ltd.	`1.81ms` from Moscow, RU
179.147.173.117	AS26599 TELEFÔNICA BRASIL S.A	`19.50ms` from Osasco, BR
58.239.188.101	AS9318 SK Broadband Co Ltd	`6.07ms` from Seoul, KR
211.203.52.165	AS9318 SK Broadband Co Ltd	`1.61ms` from Seoul, KR
99.240.65.197	AS812 Rogers Communications Canada Inc.	`4.90ms` from Toronto, CA
218.84.202.37	AS4134 CHINANET-BACKBONE	`7.73ms` from UEruemqi, CN
83.64.143.21	AS8412 T-Mobile Austria GmbH	`0.92ms` from Vienna, AT
120.10.33.133	AS4837 CHINA UNICOM China169 Backbone	`8.13ms` from Beijing, CN
140.248.65.53	AS54113 Fastly, Inc.	`0.19ms` from Brussels, BE
18.221.25.117	AS16509 Amazon.com, Inc.	`0.16ms` from Columbus, US
89.18.70.69	AS49406 Fast Wireless Internet Ltd	`8.43ms` from Dublin, IE

Traceroute

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

traceroute -a -n -q1 -f5 -m12 172.56.114.217

traceroute to 172.56.114.217 (172.56.114.217): 12 hops max, 52 byte packets

5 [AS63949] 45.79.12.101 0.413 ms

6 [AS20940] 23.203.147.38 0.905 ms

7 [AS20940] 23.209.172.96 1.053 ms

8 [AS20940] 23.209.172.101 0.841 ms

9 [AS21928] 66.94.2.114 3.657 ms

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Measurement taken from

IPinfo ProbeNet in Richardson, US

On August 28th 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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