172.56.136.0/23

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 172.56.136.0/23

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

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
131.224.2.135	AS1103 SURF B.V.	`0.56ms` from Amsterdam, NL
73.174.218.167	AS7922 Comcast Cable Communications, LLC	`13.38ms` from Ashburn, US
79.195.103.55	AS3320 Deutsche Telekom AG	`5.24ms` from Frankfurt am Main, DE
84.138.218.87	AS3320 Deutsche Telekom AG	`6.60ms` from Frankfurt am Main, DE
14.181.50.167	AS45899 VNPT Corp	`3.87ms` from Hanoi, VN
160.124.214.199	AS132839 POWER LINE DATACENTER	`1.03ms` from Hong Kong, HK
73.166.157.71	AS7922 Comcast Cable Communications, LLC	`5.06ms` from Houston, US
176.224.23.39	AS35819 Etihad Etisalat, a joint stock company	`5.23ms` from Jeddah, SA
151.49.20.7	AS1267 WIND TRE S.P.A.	`7.22ms` from Milan, IT
74.68.138.247	AS12271 Charter Communications Inc	`3.70ms` from New York City, US
34.229.167.167	AS14618 Amazon.com, Inc.	`0.50ms` from Reston, US
31.24.193.39	AS8194 VAS "Latvijas Valsts radio un televizijas centrs"	`0.37ms` from Riga, LV
61.76.215.55	AS4766 Korea Telecom	`6.04ms` from Seoul, KR
181.174.25.247	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`18.12ms` from Bogota, CO
156.205.99.87	AS8452 TE-AS	`3.33ms` from Cairo, EG
107.13.7.135	AS11426 Charter Communications Inc	`11.91ms` from Charlotte, US
208.104.192.183	AS14615 Comporium, Inc	`9.94ms` from Charlotte, US
99.149.26.103	AS7018 AT&T Enterprises, LLC	`6.68ms` from Chicago, US
98.251.231.167	AS7922 Comcast Cable Communications, LLC	`12.87ms` from Dallas, US
104.122.39.167	AS16625 Akamai Technologies, Inc.	`0.31ms` from Duesseldorf, DE
62.140.13.247	AS3356 Level 3 Parent, LLC	`0.24ms` from Frankfurt am Main, DE
14.244.133.151	AS45899 VNPT Corp	`2.08ms` from Hanoi, VN
23.169.56.119	AS30006 TOP BUSINESS INC	`1.41ms` from Hong Kong, HK
20.87.78.87	AS8075 Microsoft Corporation	`0.17ms` from Johannesburg, ZA
170.239.102.71	AS22411 GTD PERÚ S.A	`0.29ms` from Lima, PE

Traceroute

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

traceroute -a -n -q1 -m5 172.56.136.180

traceroute to 172.56.136.180 (172.56.136.180): 5 hops max, 52 byte packets

1 [AS7195] 200.25.45.66 0.184 ms

2 [AS7195] 200.25.75.24 61.855 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Lima, PE

On December 20th 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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