172.56.90.0/23

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:        abuse@t-mobile.com
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

Overlapping Ranges

BGP prefixes that contain 172.56.90.0/23

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 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.90.74	brasstrix.com	1
172.56.91.112	kamilmackow.com	1
172.56.91.203	brandishipman.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
181.121.110.119	AS23201 Telecel S.A.	`13.65ms` from Asuncion, PY
79.223.193.231	AS3320 Deutsche Telekom AG	`5.34ms` from Berlin, DE
41.141.186.183	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`2.07ms` from Casablanca, MA
62.227.39.183	AS3320 Deutsche Telekom AG	`9.99ms` from Frankfurt am Main, DE
213.21.42.215	AS15943 wilhelm.tel GmbH	`0.47ms` from Hamburg, DE
14.182.178.87	AS45899 VNPT Corp	`3.85ms` from Hanoi, VN
88.40.147.151	AS3269 Telecom Italia S.p.A.	`3.91ms` from Milan, IT
185.9.75.247	AS47321 Autonomous Non-Profit Organization Institute of Engineering Physics	`1.94ms` from Moscow, RU
69.122.42.183	AS6128 Cablevision Systems Corp.	`1.73ms` from New York City, US
73.90.192.71	AS7922 Comcast Cable Communications, LLC	`4.98ms` from San Jose, US
122.32.221.151	AS17858 LG POWERCOMM	`1.21ms` from Seoul, KR
115.40.89.167	AS9845 LG HelloVision Corp.	`12.80ms` from Seoul, KR
41.143.65.87	AS36903 Office National des Postes et Telecommunications ONPT (Maroc Telecom) / IAM	`8.31ms` from Casablanca, MA
41.59.202.39	AS33765 TANZANIA TELECOMMUNICATIONS CO. LTD	`10.82ms` from Dar es Salaam, TZ
83.253.57.103	AS1257 Tele2 Sverige AB	`1.06ms` from Goeteborg, SE
173.172.209.167	AS11427 Charter Communications Inc	`13.03ms` from Houston, US
179.190.198.39	AS28220 Alares Cabo Servicos de Telecomunicacoes S.A.	`3.20ms` from Joao Pessoa, BR
202.118.13.23	AS4538 China Education and Research Network Center	`6.63ms` from Liaoyang, CN
180.220.185.71	AS9617 JCOM Co., Ltd.	`12.24ms` from Osaka, JP
23.2.184.87	AS16625 Akamai Technologies, Inc.	`0.08ms` from Osasco, BR
88.175.79.199	AS12322 Free SAS	`9.60ms` from Paris, FR
13.225.136.7	AS16509 Amazon.com, Inc.	`0.62ms` from Seoul, KR
220.128.70.183	AS10126 Taiwan Internet Gateway	`1.51ms` from Taipei, TW
104.24.237.231	AS13335 Cloudflare, Inc.	`0.11ms` from Wrocław, PL
218.28.141.39	AS4837 CHINA UNICOM China169 Backbone	`0.55ms` from Zhengzhou, CN

Traceroute

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

traceroute -a -n -q1 -f4 -m7 172.56.91.230

traceroute to 172.56.91.230 (172.56.91.230): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.076 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

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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