172.56.176.0/23

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 172.56.176.0/23

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
172.56.177.172	cgdata.icu	1
172.56.177.65	bowinstoncook.com	1
172.56.177.240	jackbear.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
74.111.108.119	AS701 Verizon Business	`6.35ms` from Ashburn, US
163.240.5.119	AS668 United States Department of Defense (DoD)	`0.62ms` from Atlanta, US
122.174.244.167	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.02ms` from Chennai, IN
73.44.140.55	AS7922 Comcast Cable Communications, LLC	`3.51ms` from Chicago, US
98.157.116.231	AS10796 Charter Communications Inc	`5.83ms` from Cleveland, US
82.32.185.23	AS5089 Virgin Media Limited	`5.08ms` from Erith, GB
135.225.181.151	AS8075 Microsoft Corporation	`0.18ms` from Gaevle, SE
92.47.203.215	AS9198 JSC Kazakhtelecom	`4.75ms` from Karagandy, KZ
117.244.121.215	AS9829 National Internet Backbone	`4.55ms` from Mumbai, IN
75.250.82.55	AS6167 Verizon Business	`13.93ms` from New York City, US
97.113.41.231	AS209 CenturyLink Communications, LLC	`1.52ms` from Seattle, US
24.86.66.71	AS6327 Shaw Communications	`7.64ms` from Seattle, US
110.12.62.183	AS9318 SK Broadband Co Ltd	`1.26ms` from Seoul, KR
54.252.240.71	AS16509 Amazon.com, Inc.	`0.11ms` from Sydney, AU
117.36.127.167	AS4134 CHINANET-BACKBONE	`2.35ms` from Xi'an, CN
50.124.152.71	AS5650 Frontier Communications of America, Inc.	`0.62ms` from Ashburn, US
78.87.241.71	AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA	`12.42ms` from Athens, GR
94.65.31.167	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.37ms` from Athens, GR
197.45.60.215	AS8452 TE-AS	`5.60ms` from Cairo, EG
139.60.4.39	AS395451 HostIT Servers	`2.96ms` from Chicago, US
97.208.214.23	AS6167 Verizon Business	`13.29ms` from Chicago, US
106.52.91.183	AS45090 Shenzhen Tencent Computer Systems Company Limited	`1.94ms` from Guangzhou, CN
112.112.226.167	AS4134 CHINANET-BACKBONE	`0.81ms` from Kunming, CN
31.202.172.247	AS34700 MAXNET TELECOM, LTD	`6.43ms` from Kyiv, UA
24.159.245.119	AS20115 Charter Communications LLC	`18.34ms` from Minneapolis, 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 172.56.176.215

traceroute to 172.56.176.215 (172.56.176.215): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.062 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, CN

On March 13th 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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