172.56.224.0/23

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 172.56.224.0/23

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 is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.224.97	cisum.org	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
85.149.79.87	AS5390 EuroNet	`1.35ms` from Amsterdam, NL
117.192.122.119	AS9829 National Internet Backbone	`3.06ms` from Bengaluru, IN
102.190.197.231	AS24835 Vodafone Data	`5.58ms` from Cairo, EG
93.210.214.103	AS3320 Deutsche Telekom AG	`4.57ms` from Duesseldorf, DE
99.43.180.23	AS7018 AT&T Enterprises, LLC	`3.14ms` from Durham, US
77.181.42.135	AS6805 Telefonica Germany GmbH & Co.OHG	`2.52ms` from Frankfurt am Main, DE
121.198.36.55	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.46ms` from Hangzhou, CN
88.195.132.215	AS1759 Telia Finland Oyj	`1.29ms` from Helsinki, FI
98.39.255.183	AS7922 Comcast Cable Communications, LLC	`4.46ms` from Houston, US
94.175.83.183	AS5089 Virgin Media Limited	`8.32ms` from London, GB
23.196.107.119	AS16625 Akamai Technologies, Inc.	`0.34ms` from Marseille, FR
44.202.88.231	AS14618 Amazon.com, Inc.	`0.41ms` from Reston, US
189.147.81.183	AS8151 UNINET	`3.88ms` from Santiago de Queretaro, MX
152.243.181.119	AS26599 TELEFÔNICA BRASIL S.A	`1.98ms` from Sao Paulo, BR
67.204.139.135	AS4181 TDS TELECOM	`11.15ms` from Seattle, US
151.210.102.247	AS25853 Ellijay Telephone Company	`8.19ms` from Atlanta, US
217.92.169.87	AS3320 Deutsche Telekom AG	`3.18ms` from Berlin, DE
52.24.118.231	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
197.134.59.55	AS24835 Vodafone Data	`11.93ms` from Cairo, EG
183.66.166.135	AS4134 CHINANET-BACKBONE	`1.42ms` from Chongqing, CN
34.250.74.247	AS16509 Amazon.com, Inc.	`0.15ms` from Dublin, IE
188.185.69.103	AS513 CERN - European Organization for Nuclear Research	`1.16ms` from Geneve, CH
89.246.212.183	AS8881 1&1 Versatel GmbH	`3.60ms` from Hamburg, DE
49.172.167.7	AS17858 LG POWERCOMM	`1.88ms` from Incheon, KR
47.201.221.71	AS5650 Frontier Communications of America, Inc.	`11.79ms` from Miami, US

Traceroute

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

traceroute -a -n -q1 -m6 172.56.225.255

traceroute to 172.56.225.255 (172.56.225.255): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.126 0.24 ms

2 [AS21928] 66.94.0.89 0.821 ms

3 [AS21928] 66.94.0.88 0.596 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

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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