172.56.58.0/23

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 172.56.58.0/23

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 is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.59.122	augfam.com	1

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
2.206.121.215	AS3209 Vodafone GmbH	`2.93ms` from Frankfurt am Main, DE
95.191.246.167	AS12389 PJSC Rostelecom	`0.82ms` from Novosibirsk, RU
177.92.193.87	AS262729 Telemidia Sistema de Telecomunicacao Ltda	`5.38ms` from Sao Paulo, BR
27.232.143.247	AS4766 Korea Telecom	`1.56ms` from Seoul, KR
175.209.63.87	AS4766 Korea Telecom	`1.14ms` from Seoul, KR
59.14.245.71	AS4766 Korea Telecom	`1.91ms` from Seoul, KR
73.135.241.215	AS7922 Comcast Cable Communications, LLC	`6.27ms` from Ashburn, US
92.118.112.247	AS215540 GLOBAL CONNECTIVITY SOLUTIONS LLP	`0.17ms` from Atlanta, US
180.180.237.7	AS23969 TOT Public Company Limited	`2.25ms` from Bangkok, TH
36.65.181.87	AS7713 PT Telekomunikasi Indonesia	`12.50ms` from Batam, ID
67.67.6.119	AS17378 TierPoint, LLC	`7.11ms` from Dallas, US
97.132.177.23	AS6167 Verizon Business	`19.64ms` from Denver, US
91.108.240.55	AS210644 AEZA GROUP LLC	`0.47ms` from Frankfurt am Main, DE
36.249.69.135	AS4837 CHINA UNICOM China169 Backbone	`6.33ms` from Fuzhou, CN
38.173.250.103	AS398478 PEG TECH INC	`0.79ms` from Hong Kong, HK
188.61.241.39	AS3303 Swisscom (Switzerland) Ltd	`0.74ms` from Lausanne, CH
87.14.41.247	AS3269 Telecom Italia S.p.A.	`6.11ms` from Milan, IT
117.81.91.55	AS4134 CHINANET-BACKBONE	`6.83ms` from Nanjing, CN
24.190.82.23	AS6128 Cablevision Systems Corp.	`7.42ms` from New York City, US
193.108.21.87	AS20493 VIPARIS LE PALAIS DES CONGRES DE PARIS SAS	`0.66ms` from Paris, FR
131.117.207.39	AS43174 NOVELCOM SARL	`0.27ms` from Paris, FR
51.235.144.199	AS25019 Saudi Telecom Company JSC	`2.58ms` from Riyadh, SA
178.72.128.231	AS49505 JSC Selectel	`0.48ms` from Saint Petersburg, RU
75.139.177.23	AS20115 Charter Communications LLC	`18.88ms` from San Jose, US
118.47.251.103	AS4766 Korea Telecom	`7.34ms` from Seoul, KR

Traceroute

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

traceroute -a -n -q1 -m5 172.56.59.231

traceroute to 172.56.59.231 (172.56.59.231): 5 hops max, 52 byte packets

1 [AS15169] 142.251.247.129 106.506 ms

2 [AS15169] 108.170.255.8 106.123 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Sao Paulo, BR

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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