172.56.236.0/23

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 172.56.236.0/23

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
73.246.11.167	AS7922 Comcast Cable Communications, LLC	`3.56ms` from Chicago, US
78.177.230.7	AS9121 Turk Telekomunikasyon Anonim Sirketi	`7.39ms` from Denizli, TR
195.253.54.55	AS8391 Knipp Medien und Kommunikation GmbH	`3.06ms` from Duesseldorf, DE
20.91.209.7	AS8075 Microsoft Corporation	`0.17ms` from Gaevle, SE
121.173.237.71	AS4766 Korea Telecom	`0.70ms` from Incheon, KR
178.195.225.39	AS3303 Swisscom (Switzerland) Ltd	`0.68ms` from Lausanne, CH
66.127.8.231	AS7018 AT&T Enterprises, LLC	`1.71ms` from Los Angeles, US
172.235.154.71	AS63949 Akamai Connected Cloud	`0.60ms` from Miami, US
2.119.110.231	AS3269 Telecom Italia S.p.A.	`4.48ms` from Milan, IT
81.18.146.87	AS15774 Limited Liability Company "TTK-Svyaz"	`7.18ms` from Moscow, RU
91.61.28.87	AS3320 Deutsche Telekom AG	`3.83ms` from Nuernberg, DE
201.77.19.55	AS19723 CIA. DE TECNOL. DA INFOR. E COMUNICAÇÃO DO PARANÁ	`5.86ms` from Osasco, BR
193.90.197.247	AS2116 GLOBALCONNECT AS	`0.84ms` from Oslo, NO
103.9.189.151	AS38901 EZECOM CO., LTD.	`0.78ms` from Phnom Penh, KH
90.180.217.135	AS5610 O2 Czech Republic, a.s.	`3.41ms` from Prague, CZ
163.239.204.71	AS3813 Sogang University	`1.79ms` from Seoul, KR
157.205.249.71	AS17514 Otsuka Corp.	`0.57ms` from Tokyo, JP
131.147.48.231	AS2527 Sony Network Communications Inc.	`3.34ms` from Tokyo, JP
59.146.107.215	AS2527 Sony Network Communications Inc.	`17.39ms` from Tokyo, JP
122.249.89.7	AS4685 Asahi Net	`1.98ms` from Tokyo, JP
20.224.28.55	AS8075 Microsoft Corporation	`0.27ms` from Amsterdam, NL
101.241.72.183	AS17429 BEIJING GEHUA CATV NETWORK CO.LTD	`8.94ms` from Beijing, CN
190.24.69.39	AS19429 ETB - Colombia	`0.95ms` from Bogota, CO
34.249.69.135	AS16509 Amazon.com, Inc.	`0.16ms` from Dublin, IE
23.152.16.71	AS393684 Infinity Network Services, Inc.	`8.10ms` from Durham, US

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 172.56.236.22

traceroute to 172.56.236.22 (172.56.236.22): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.069 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, 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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