172.56.240.0/23

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 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
78.51.29.23	AS6805 Telefonica Germany GmbH & Co.OHG	`3.78ms` from Frankfurt am Main, DE
97.98.78.183	AS11427 Charter Communications Inc	`8.54ms` from Houston, US
123.189.34.55	AS4837 CHINA UNICOM China169 Backbone	`5.90ms` from Liaoyang, CN
68.115.98.215	AS20115 Charter Communications LLC	`9.11ms` from Minneapolis, US
134.238.148.231	AS394089 Google LLC	`0.95ms` from Montreal, CA
20.19.129.103	AS8075 Microsoft Corporation	`0.15ms` from Paris, FR
104.42.154.231	AS8075 Microsoft Corporation	`0.56ms` from San Jose, US
36.231.172.7	AS3462 Data Communication Business Group	`1.07ms` from Taipei, TW
76.18.252.55	AS7922 Comcast Cable Communications, LLC	`9.55ms` from Tampa, US
93.173.93.7	AS1680 Cellcom Fixed Line Communication L.P	`8.84ms` from Tel Aviv, IL
68.23.18.7	AS7018 AT&T Enterprises, LLC	`6.29ms` from Atlanta, US
34.212.209.151	AS16509 Amazon.com, Inc.	`0.20ms` from Boardman, US
44.229.28.215	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
125.81.47.183	AS4134 CHINANET-BACKBONE	`4.73ms` from Chongqing, CN
52.208.101.55	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
202.140.234.55	AS137927 Automated System (HK) Ltd.	`2.17ms` from Hong Kong, HK
105.247.107.167	AS36994 Vodacom	`11.27ms` from Johannesburg, ZA
171.79.83.103	AS24560 Bharti Airtel Ltd., Telemedia Services	`1.89ms` from Kolkata, IN
117.42.218.39	AS4134 CHINANET-BACKBONE	`3.73ms` from Nanchang, CN
153.145.140.23	AS4713 NTT Communications Corporation	`7.70ms` from Osaka, JP
119.185.116.71	AS4837 CHINA UNICOM China169 Backbone	`4.57ms` from Qingdao, CN
54.163.2.87	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
187.222.16.151	AS8151 UNINET	`4.69ms` from Santiago de Queretaro, MX
39.124.57.151	AS9318 SK Broadband Co Ltd	`3.29ms` from Seoul, KR
80.232.82.7	AS25400 Telia Norge AS	`17.44ms` from Stockholm, SE

Traceroute

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

traceroute -a -n -q1 -f2 -m6 172.56.240.1

traceroute to 172.56.240.1 (172.56.240.1): 6 hops max, 52 byte packets

2 [] 84.17.33.92 0.185 ms

3 [AS60068] 185.229.188.49 0.228 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Chicago, 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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