172.56.216.0/21

AS21928 · T-Mobile USA, Inc.

Need more data or want to access it via API or data downloads? Sign up to get free access

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 172.56.216.0/21

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 10 domain names hosted across 15 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

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
107.23.144.181	AS14618 Amazon.com, Inc.	`0.42ms` from Ashburn, US
188.4.108.85	AS1241 Forthnet	`10.15ms` from Athens, GR
168.110.215.197	AS31898 Oracle Corporation	`0.17ms` from Batam, ID
60.8.36.21	AS4837 CHINA UNICOM China169 Backbone	`15.26ms` from Beijing, CN
202.171.164.213	AS38195 Superloop	`0.23ms` from Brisbane, AU
24.144.62.245	AS12231 Conway Corporation	`10.86ms` from Dallas, US
84.130.236.245	AS3320 Deutsche Telekom AG	`3.32ms` from Duesseldorf, DE
79.136.91.229	AS8473 Bahnhof AB	`4.25ms` from Falkenberg, SE
218.22.84.101	AS4134 CHINANET-BACKBONE	`7.17ms` from Huai'an, CN
71.121.212.21	AS701 Verizon Business	`4.28ms` from Philadelphia, US
121.178.31.5	AS4766 Korea Telecom	`6.71ms` from Seoul, KR
221.183.190.21	AS9808 China Mobile Communications Group Co., Ltd.	`1.15ms` from Shanghai, CN
163.61.49.37	AS153609 Dinas Komunikasi, Informatika Dan Statistik Kabupaten Kepulauan Anambas	`7.50ms` from Singapore, SG
202.73.57.133	AS18106 Viewqwest Pte Ltd	`0.38ms` from Singapore, SG
118.161.14.117	AS3462 Data Communication Business Group	`1.70ms` from Taipei, TW
153.122.66.149	AS131921 GMO GlobalSign Holdings K.K.	`1.06ms` from Tokyo, JP
50.16.184.5	AS14618 Amazon.com, Inc.	`0.49ms` from Ashburn, US
49.233.168.5	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.93ms` from Beijing, CN
123.113.247.117	AS4808 China Unicom Beijing Province Network	`3.60ms` from Beijing, CN
185.27.164.69	AS48803 Mediateknik i Varberg AB	`1.64ms` from Goeteborg, SE
152.118.181.69	AS3382 University of Indonesia	`6.14ms` from Jakarta, ID
172.209.227.197	AS8075 Microsoft Corporation	`0.14ms` from Johannesburg, ZA
107.141.210.37	AS7018 AT&T Enterprises, LLC	`8.96ms` from Los Angeles, US
35.152.243.245	AS16509 Amazon.com, Inc.	`0.14ms` from Milan, IT
46.226.130.133	AS34863 HEXANET SAS	`0.81ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f5 -m12 172.56.220.140

traceroute to 172.56.220.140 (172.56.220.140): 12 hops max, 52 byte packets

5 [AS63949] 45.79.12.102 0.402 ms

6 [AS20940] 23.203.147.40 0.707 ms

7 [AS20940] 23.209.172.98 1.188 ms

8 [AS20940] 23.209.172.103 1.163 ms

9 [AS21928] 66.94.2.112 2.065 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Richardson, US

On March 13th 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.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales