172.56.238.0/23

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 172.56.238.0/23

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
77.160.2.215	AS1136 KPN B.V.	`1.14ms` from Amsterdam, NL
64.58.192.55	AS32458 IND. CO. CABLE TV, INC.	`14.93ms` from Dallas, US
52.138.206.183	AS8075 Microsoft Corporation	`0.16ms` from Dublin, IE
178.30.240.151	AS8434 Telenor Sverige AB	`15.79ms` from Falkenberg, SE
80.144.108.7	AS3320 Deutsche Telekom AG	`2.39ms` from Frankfurt am Main, DE
113.78.253.135	AS4134 CHINANET-BACKBONE	`2.86ms` from Guangzhou, CN
171.251.111.231	AS7552 Viettel Group	`15.88ms` from Ho Chi Minh City, VN
8.217.207.87	AS45102 Alibaba (US) Technology Co., Ltd.	`0.54ms` from Hong Kong, HK
175.167.18.199	AS4837 CHINA UNICOM China169 Backbone	`4.40ms` from Liaoyang, CN
187.19.107.151	AS28130 CERTTO TELECOMUNICAÇÕES LTDA EPP.	`12.96ms` from Osasco, BR
112.230.2.135	AS4837 CHINA UNICOM China169 Backbone	`6.96ms` from Qingdao, CN
119.219.82.39	AS4766 Korea Telecom	`6.70ms` from Seoul, KR
121.5.239.119	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.30ms` from Shanghai, CN
83.143.240.103	AS9009 M247 Europe SRL	`5.16ms` from Vienna, AT
143.47.117.87	AS31898 Oracle Corporation	`0.36ms` from Ashburn, US
185.223.244.167	AS41110 DSLmobil GmbH	`6.67ms` from Frankfurt am Main, DE
183.61.54.71	AS4134 CHINANET-BACKBONE	`1.88ms` from Guangzhou, CN
113.169.121.151	AS45899 VNPT Corp	`2.65ms` from Ho Chi Minh City, VN
42.55.17.215	AS4837 CHINA UNICOM China169 Backbone	`9.92ms` from Liaoyang, CN
219.160.179.231	AS4713 NTT DOCOMO BUSINESS,Inc.	`9.81ms` from Osaka, JP
89.104.172.119	AS49544 i3D.net B.V	`0.37ms` from Paris, FR
69.187.35.23	AS10361 Bloomberg, LP	`2.26ms` from Secaucus, US
219.102.66.247	AS2514 NTT PC Communications, Inc.	`3.69ms` from Tokyo, JP
218.221.178.7	AS2527 Sony Network Communications Inc.	`2.40ms` from Tokyo, JP
89.64.139.7	AS9141 P4 Sp. z o.o.	`6.32ms` from Warsaw, PL

Traceroute

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

traceroute -a -n -q1 -m5 172.56.238.251

traceroute to 172.56.238.251 (172.56.238.251): 5 hops max, 52 byte packets

1 [AS15169] 142.250.234.209 177.394 ms

2 [AS15169] 142.251.52.10 177.478 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

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.

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