172.56.134.0/23

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 172.56.134.0/23

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
5.204.78.103	AS213155 Yettel Hungary Ltd.	`10.93ms` from Budapest, HU
122.178.194.71	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.12ms` from Chennai, IN
140.189.74.7	AS2381 WiscNet	`5.65ms` from Chicago, US
3.135.142.135	AS16509 Amazon.com, Inc.	`0.17ms` from Columbus, US
178.231.204.7	AS31615 Odido Netherlands B.V.	`11.00ms` from Delft, NL
141.147.16.151	AS31898 Oracle Corporation	`0.24ms` from Frankfurt am Main, DE
158.132.135.55	AS4616 The Hong Kong Polytechnic University	`2.78ms` from Hong Kong, HK
40.132.101.247	AS7029 Windstream Communications LLC	`0.20ms` from Miami, US
15.223.245.7	AS16509 Amazon.com, Inc.	`0.70ms` from Montreal, CA
125.113.70.7	AS4134 CHINANET-BACKBONE	`6.38ms` from Ningbo, CN
85.209.98.23	AS209098 University of Sarajevo	`1.14ms` from Sarajevo, BA
175.235.202.23	AS4766 Korea Telecom	`1.66ms` from Seoul, KR
18.143.93.151	AS16509 Amazon.com, Inc.	`0.52ms` from Singapore, SG
203.40.114.23	AS1221 Telstra Limited	`5.71ms` from Sydney, AU
36.237.170.167	AS3462 Data Communication Business Group	`3.16ms` from Taichung, TW
104.96.92.23	AS16625 Akamai Technologies, Inc.	`0.10ms` from Vienna, AT
98.26.251.135	AS11426 Charter Communications Inc	`10.92ms` from Charlotte, US
4.150.141.135	AS8075 Microsoft Corporation	`0.16ms` from Des Moines, US
107.197.206.55	AS7018 AT&T Enterprises, LLC	`4.20ms` from Houston, US
116.252.13.39	AS4134 CHINANET-BACKBONE	`3.25ms` from Nanning, CN
134.16.38.247	AS20115 Charter Communications LLC	`6.34ms` from San Jose, US
187.207.39.167	AS8151 UNINET	`3.83ms` from Santiago de Queretaro, MX
103.165.151.151	AS141922 PT Agsa Global Network	`8.52ms` from Singapore, SG
153.132.80.215	AS4713 NTT DOCOMO BUSINESS,Inc.	`3.62ms` from Tokyo, JP
84.55.214.87	AS12620 Ticinocom SA	`4.54ms` from Zuerich, CH

Traceroute

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

traceroute -a -n -q1 -f4 -m8 172.56.135.4

traceroute to 172.56.135.4 (172.56.135.4): 8 hops max, 52 byte packets

4 [AS56911] 185.169.236.252 39.455 ms

5 [AS2128] 185.6.36.141 39.723 ms

6 *

7 *

8 *

Measurement taken from

IPinfo ProbeNet in Frosinone, IT

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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