172.56.244.0/23

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 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.244.226	michaelsoft.us	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

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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
44.225.119.87	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
34.81.116.199	AS396982 Google LLC	`0.12ms` from Chang-hua, TW
107.9.241.23	AS10796 Charter Communications Inc	`16.92ms` from Columbus, US
39.49.238.39	AS17557 Pakistan Telecommunication Company Limited	`1.91ms` from Islamabad, PK
194.193.137.231	AS7545 TPG Telecom Limited	`1.56ms` from Melbourne, AU
112.83.140.135	AS4837 CHINA UNICOM China169 Backbone	`4.16ms` from Nanjing, CN
153.212.218.167	AS4713 NTT Communications Corporation	`11.38ms` from Osaka, JP
87.100.243.55	AS16086 DNA Oyj	`0.75ms` from Oulu, FI
44.198.234.119	AS14618 Amazon.com, Inc.	`0.12ms` from Reston, US
44.201.130.135	AS14618 Amazon.com, Inc.	`0.40ms` from Reston, US
54.166.175.215	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
3.221.33.103	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
43.130.14.103	AS132203 Tencent Building, Kejizhongyi Avenue	`0.31ms` from San Jose, US
177.102.202.39	AS27699 TELEFÔNICA BRASIL S.A	`4.21ms` from Sao Paulo, BR
125.184.168.23	AS17858 LG POWERCOMM	`6.69ms` from Seoul, KR
14.4.119.23	AS17858 LG POWERCOMM	`2.26ms` from Seoul, KR
13.228.68.231	AS16509 Amazon.com, Inc.	`0.15ms` from Singapore, SG
160.237.222.231	AS2907 Research Organization of Information and Systems, National Institute of Informatics	`2.62ms` from Tokyo, JP
207.35.63.55	AS577 Bell Canada	`1.60ms` from Toronto, CA
161.156.149.119	AS36351 IBM Cloud	`0.78ms` from Frankfurt am Main, DE
73.71.54.7	AS7922 Comcast Cable Communications, LLC	`7.00ms` from Fremont, US
95.112.148.215	AS6805 Telefonica Germany GmbH & Co.OHG	`2.21ms` from Hamburg, DE
183.143.5.199	AS4134 CHINANET-BACKBONE	`7.14ms` from Hangzhou, CN
202.175.28.55	AS4609 Companhia de Telecomunicacoes de Macau SARL	`1.91ms` from Hong Kong, HK
156.56.31.7	AS87 Indiana University	`3.17ms` from Indianapolis, 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 -m10 172.56.244.104

traceroute to 172.56.244.104 (172.56.244.104): 10 hops max, 52 byte packets

4 [AS63949] 173.230.159.133 0.277 ms

5 [AS20940] 23.203.158.50 0.716 ms

6 [AS20940] 23.207.232.33 0.858 ms

7 [AS21928] 66.94.0.36 0.849 ms

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Measurement taken from

IPinfo ProbeNet in Santa Clara, 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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