172.56.240.0/23

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 172.56.240.0/23

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 6 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.241.27	blakenoble.com	1
172.56.241.44	dukesd.com	1
172.56.240.74	fllnsa.com	1
172.56.241.151	5stars.club	1
172.56.241.221	michaelsoft.us	1
172.56.240.167	geekery858.com	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

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
203.157.150.231	AS9649 Information Technology Office	`13.40ms` from Bangkok, TH
178.117.236.55	AS6848 Telenet BV	`7.55ms` from Brussels, BE
73.111.44.103	AS7922 Comcast Cable Communications, LLC	`4.18ms` from Chicago, US
34.16.112.39	AS396982 Google LLC	`0.13ms` from Council Bluffs, US
91.73.241.151	AS15802 Emirates Integrated Telecommunications Company PJSC	`3.64ms` from Dubai, AE
120.72.109.215	AS24085 Quang Trung Software City Development Company	`1.14ms` from Ho Chi Minh City, VN
69.28.77.7	AS6364 Atlantic.net, Inc.	`4.58ms` from Jacksonville, US
80.5.147.39	AS5089 Virgin Media Limited	`9.10ms` from London, GB
15.207.228.71	AS16509 Amazon.com, Inc.	`0.11ms` from Mumbai, IN
34.155.231.71	AS396982 Google LLC	`0.10ms` from Paris, FR
1.255.53.167	AS23576 NAVER Cloud Corp.	`0.76ms` from Seoul, KR
222.45.201.103	AS56046 China Mobile communications corporation	`3.50ms` from Suzhou, CN
35.77.171.23	AS16509 Amazon.com, Inc.	`0.18ms` from Tokyo, JP
202.59.149.231	AS23633 Niigata Communication Service	`2.13ms` from Tokyo, JP
48.218.193.7	AS8075 Microsoft Corporation	`0.15ms` from Tokyo, JP
145.38.218.135	AS1103 SURF B.V.	`1.04ms` from Amsterdam, NL
104.191.57.199	AS7018 AT&T Enterprises, LLC	`12.96ms` from Atlanta, US
85.214.174.23	AS6724 Strato GmbH	`0.55ms` from Berlin, DE
189.219.64.39	AS265594 Television Internacional, S.A. de C.V.	`13.13ms` from Dallas, US
107.209.248.7	AS7018 AT&T Enterprises, LLC	`6.88ms` from Dallas, US
113.170.101.247	AS45899 VNPT Corp	`5.30ms` from Ho Chi Minh City, VN
178.69.141.103	AS12389 PJSC Rostelecom	`10.88ms` from Saint Petersburg, RU
59.126.75.151	AS3462 Data Communication Business Group	`1.32ms` from Taichung, TW
44.249.65.23	AS16509 Amazon.com, Inc.	`0.31ms` from Boardman, US
104.43.133.71	AS8075 Microsoft Corporation	`0.33ms` from Des Moines, 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 172.56.240.87

traceroute to 172.56.240.87 (172.56.240.87): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.089 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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