172.56.242.0/23

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 172.56.242.0/23

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 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.242.54	haverly.net	1
172.56.243.30	suggestionbear.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
109.207.41.151	AS52026 TRUF d.o.o.	`1.86ms` from Belgrade, RS
3.137.51.7	AS16509 Amazon.com, Inc.	`0.14ms` from Columbus, US
54.73.231.215	AS16509 Amazon.com, Inc.	`0.23ms` from Dublin, IE
212.185.231.55	AS3320 Deutsche Telekom AG	`5.09ms` from Duesseldorf, DE
182.208.227.231	AS17858 LG POWERCOMM	`1.66ms` from Incheon, KR
147.227.178.151	AS668 United States Department of Defense (DoD)	`1.71ms` from Los Angeles, US
83.37.153.215	AS3352 TELEFONICA DE ESPANA S.A.U.	`10.26ms` from Madrid, ES
163.109.91.215	AS36351 IBM Cloud	`1.48ms` from Osasco, BR
113.236.43.231	AS4837 CHINA UNICOM China169 Backbone	`9.85ms` from Tieling, CN
171.11.32.119	AS4134 CHINANET-BACKBONE	`10.59ms` from Wuhan, CN
108.236.184.215	AS7018 AT&T Enterprises, LLC	`7.53ms` from Atlanta, US
93.197.83.215	AS3320 Deutsche Telekom AG	`2.38ms` from Berlin, DE
23.66.124.55	AS20940 Akamai International B.V.	`0.27ms` from Chicago, US
156.244.182.71	AS9294 GNET INC.	`0.84ms` from Hong Kong, HK
72.175.96.215	AS33588 Charter Communications LLC	`14.60ms` from Seattle, US
34.82.93.39	AS396982 Google LLC	`0.17ms` from The Dalles, US
105.109.164.55	AS36947 Telecom Algeria	`14.12ms` from Algiers, DZ
87.167.159.135	AS3320 Deutsche Telekom AG	`4.15ms` from Berlin, DE
54.68.183.183	AS16509 Amazon.com, Inc.	`0.18ms` from Boardman, US
201.245.220.87	AS19429 ETB - Colombia	`1.03ms` from Bogota, CO
71.235.38.119	AS7922 Comcast Cable Communications, LLC	`9.34ms` from Boston, US
96.164.126.247	AS393232 Comcast Cable Communications, LLC	`0.08ms` from Chicago, US
104.248.38.23	AS14061 DigitalOcean, LLC	`0.29ms` from Frankfurt am Main, DE
85.4.225.39	AS3303 Swisscom (Switzerland) Ltd	`0.69ms` from Geneve, CH
189.178.132.119	AS8151 UNINET	`6.13ms` from Guadalajara, MX

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 172.56.243.17

traceroute to 172.56.243.17 (172.56.243.17): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.085 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

On March 21st 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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