172.56.210.0/23

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:      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:        [email protected]
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:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 172.56.210.0/23

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 no domains currently hosted on this ASN.

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
72.66.78.55	AS701 Verizon Business	`2.20ms` from Ashburn, US
68.62.238.103	AS7922 Comcast Cable Communications, LLC	`16.08ms` from Atlanta, US
97.139.138.167	AS6167 Verizon Business	`7.48ms` from Denver, US
14.249.177.151	AS45899 VNPT Corp	`2.05ms` from Hanoi, VN
171.245.213.167	AS7552 Viettel Group	`4.25ms` from Ho Chi Minh City, VN
68.47.211.55	AS7922 Comcast Cable Communications, LLC	`8.57ms` from Murfreesboro, US
201.48.229.183	AS16735 ALGAR TELECOM S/A	`7.71ms` from Osasco, BR
202.62.55.7	AS23673 Cogetel Online, Cambodia, ISP	`0.57ms` from Phnom Penh, KH
143.107.237.39	AS28571 UNIVERSIDADE DE SAO PAULO	`6.97ms` from Sao Paulo, BR
49.61.14.87	AS4766 Korea Telecom	`3.67ms` from Seoul, KR
49.227.135.135	AS9500 One New Zealand Group Limited	`14.13ms` from Auckland, NZ
61.91.42.247	AS7470 TRUE INTERNET Co.,Ltd.	`5.58ms` from Bangkok, TH
54.188.56.183	AS16509 Amazon.com, Inc.	`0.21ms` from Boardman, US
173.30.158.55	AS30036 Mediacom Communications Corp	`6.21ms` from Chicago, US
68.43.24.71	AS7922 Comcast Cable Communications, LLC	`8.83ms` from Detroit, US
38.239.186.23	AS134548 DXTL Tseung Kwan O Service	`0.74ms` from Hong Kong, HK
123.190.216.247	AS4837 CHINA UNICOM China169 Backbone	`8.85ms` from Liaoyang, CN
143.92.170.231	AS25019 Saudi Telecom Company JSC	`4.14ms` from Manama, BH
80.42.215.119	AS13285 TalkTalk Communications Limited	`5.75ms` from Manchester, GB
98.230.251.247	AS7922 Comcast Cable Communications, LLC	`17.10ms` from Miami, US
76.110.107.183	AS7922 Comcast Cable Communications, LLC	`8.46ms` from Miami, US
73.125.219.119	AS7922 Comcast Cable Communications, LLC	`4.52ms` from Miami, US
196.186.81.183	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`15.06ms` from Tunis, TN
71.194.72.199	AS7922 Comcast Cable Communications, LLC	`5.62ms` from Chicago, US
82.83.53.183	AS3209 Vodafone GmbH	`18.28ms` from Hamburg, DE

Traceroute

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

traceroute -a -n -q1 -m4 172.56.211.36

traceroute to 172.56.211.36 (172.56.211.36): 4 hops max, 52 byte packets

1 [AS141995] 109.123.229.11 1.169 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Tokyo, JP

On November 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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