172.56.168.0/21

AS21928 · T-Mobile USA, Inc.

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Summary

Country	United States
Domain	t-mobile.com
ASN	AS21928
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
OriginAS:       21928
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:        2025-01-09
OfficePhone:    +1-888-662-4662
Mailbox:        ARINtechcontact@t-mobile.com
Source:         ARIN

Hosted domains

There are 4 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.168.233	zackstephens.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

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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
89.119.12.117	AS8968 BT Italia S.p.A.	`4.75ms` from Arezzo, IT
97.181.125.229	AS6167 Verizon Business	`15.01ms` from Atlanta, US
174.168.72.133	AS7922 Comcast Cable Communications, LLC	`5.06ms` from Boston, US
52.96.29.85	AS8075 Microsoft Corporation	`0.52ms` from Boydton, US
184.55.242.21	AS10796 Charter Communications Inc	`5.01ms` from Chicago, US
192.170.225.5	AS160 The University of Chicago	`0.63ms` from Chicago, US
144.91.200.117	AS53828 NETWORK INNOVATIONS, LLC	`0.55ms` from Chicago, US
42.186.44.165	AS45062 Netease-Network	`3.32ms` from Hangzhou, CN
80.220.152.85	AS1759 Telia Finland Oyj	`5.63ms` from Helsinki, FI
3.163.235.21	AS16509 Amazon.com, Inc.	`0.16ms` from Milan, IT
172.101.132.117	AS11351 Charter Communications Inc	`17.86ms` from Mount Prospect, US
117.62.26.37	AS4134 CHINANET-BACKBONE	`4.96ms` from Nanjing, CN
212.116.243.21	AS62240 Clouvider	`1.13ms` from New York City, US
81.255.70.101	AS3215 Orange S.A.	`1.33ms` from Paris, FR
74.81.124.53	AS26801 Zito Media, L.P.	`0.60ms` from Philadelphia, US
177.39.43.53	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`11.98ms` from Porto Alegre, BR
3.81.250.133	AS14618 Amazon.com, Inc.	`0.59ms` from Reston, US
205.233.58.181	AS32881 Server North	`0.14ms` from Toronto, CA
102.24.255.21	AS327934 SOCIETE NATIONALE DES TELECOMMUNICATIONS (Tunisie Telecom)	`12.81ms` from Tunis, TN
27.30.130.5	AS4134 CHINANET-BACKBONE	`10.61ms` from Wuhan, CN
123.124.235.5	AS4808 China Unicom Beijing Province Network	`3.22ms` from Beijing, CN
23.144.82.53	AS16509 Amazon.com, Inc.	`1.51ms` from Boardman, US
76.131.80.85	AS7922 Comcast Cable Communications, LLC	`3.84ms` from Denver, US
45.188.151.53	AS265335 PLANETA NET TELECOM	`8.16ms` from Fortaleza, BR
213.76.64.69	AS5617 Orange Polska Spolka Akcyjna	`2.59ms` from Gdynia, PL

Traceroute

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

traceroute -a -n -q1 -f5 -m10 172.56.174.242

traceroute to 172.56.174.242 (172.56.174.242): 10 hops max, 52 byte packets

5 [AS174] 154.54.42.101 0.812 ms

6 [AS174] 154.54.40.157 13.328 ms

7 [AS174] 154.54.169.38 12.846 ms

8 *

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Measurement taken from

IPinfo ProbeNet in Los Angeles, US

On August 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.

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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