172.56.84.0/23

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 172.56.84.0/23

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
145.128.186.151	AS28685 Routit BV	`3.12ms` from Amsterdam, NL
202.29.173.231	AS133042 Office of the basic education commission	`1.83ms` from Bangkok, TH
181.2.60.167	AS7303 Telecom Argentina S.A.	`1.50ms` from Buenos Aires, AR
172.3.214.151	AS7018 AT&T Enterprises, LLC	`5.27ms` from Chicago, US
91.39.234.231	AS3320 Deutsche Telekom AG	`2.58ms` from Frankfurt am Main, DE
14.120.184.247	AS136199 CHINANET Guangdong province Yuedong MAN network	`4.74ms` from Guangzhou, CN
23.100.90.87	AS8075 Microsoft Corporation	`0.31ms` from Hong Kong, HK
49.85.189.167	AS4134 CHINANET-BACKBONE	`7.28ms` from Huai'an, CN
23.32.232.183	AS7713 PT Telekomunikasi Indonesia	`0.79ms` from Jakarta, ID
196.190.220.199	AS24757 Ethio Telecom	`0.54ms` from Karachi, PK
65.229.23.23	AS701 Verizon Business	`8.24ms` from Los Angeles, US
14.96.196.39	AS17762 Tata Teleservices Maharashtra Ltd	`1.47ms` from Mumbai, IN
213.154.12.71	AS28787 Aztelekom LLC	`1.32ms` from Baku, AZ
5.2.138.215	AS8708 DIGI ROMANIA S.A.	`0.71ms` from Bucharest, RO
136.116.191.247	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
98.209.33.55	AS7922 Comcast Cable Communications, LLC	`8.51ms` from Flint, US
223.231.213.183	AS45609 Bharti Airtel Ltd. AS for GPRS Service	`6.67ms` from Kolkata, IN
182.240.198.55	AS4134 CHINANET-BACKBONE	`13.49ms` from Kunming, CN
186.55.140.199	AS6057 Administracion Nacional de Telecomunicaciones	`3.56ms` from Montevideo, UY
123.153.227.7	AS4837 CHINA UNICOM China169 Backbone	`6.42ms` from Ningbo, CN
176.151.104.119	AS5410 Bouygues Telecom SA	`1.57ms` from Paris, FR
219.146.250.135	AS4134 CHINANET-BACKBONE	`1.78ms` from Qingdao, CN
59.1.200.215	AS4766 Korea Telecom	`5.80ms` from Seoul, KR
87.120.119.119	AS20911 Net-Surf.net Ltd.	`2.32ms` from Sofia, BG
194.127.194.55	AS134351 Leaseweb Japan K.K.	`0.27ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -f4 -m10 172.56.85.1

traceroute to 172.56.85.1 (172.56.85.1): 10 hops max, 52 byte packets

4 [AS63949] 173.230.159.133 0.25 ms

5 [AS20940] 23.203.158.50 0.692 ms

6 [AS20940] 23.207.232.33 0.634 ms

7 [AS21928] 66.94.0.36 10.587 ms

8 *

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Measurement taken from

IPinfo ProbeNet in Santa Clara, US

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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