172.56.166.0/23

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 172.56.166.0/23

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 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.166.200	mattlikes.men	1
172.56.166.175	packetsnbits.net	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
3.216.180.183	AS14618 Amazon.com, Inc.	`0.53ms` from Ashburn, US
54.230.237.71	AS16509 Amazon.com, Inc.	`0.55ms` from Bangkok, TH
181.90.153.183	AS7303 Telecom Argentina S.A.	`2.05ms` from Buenos Aires, AR
189.174.64.215	AS8151 UNINET	`0.67ms` from Cancún, MX
109.58.140.215	AS44034 Hi3G Access AB	`6.40ms` from Copenhagen, DK
46.51.153.247	AS16509 Amazon.com, Inc.	`0.21ms` from Dublin, IE
165.120.151.71	AS2856 British Telecommunications PLC	`2.56ms` from London, GB
85.95.56.71	AS57099 Boundless Networks Limited	`2.04ms` from Manchester, GB
151.20.13.23	AS1267 WIND TRE S.P.A.	`3.83ms` from Milan, IT
90.28.231.103	AS3215 Orange S.A.	`6.92ms` from Paris, FR
199.87.219.7	AS33459 Open Text Corporation	`1.02ms` from Phoenix, US
119.162.109.247	AS4837 CHINA UNICOM China169 Backbone	`6.04ms` from Qingdao, CN
20.45.40.7	AS8075 Microsoft Corporation	`0.24ms` from San Antonio, US
71.85.237.119	AS20115 Charter Communications LLC	`4.91ms` from St. Louis, US
34.194.134.55	AS14618 Amazon.com, Inc.	`0.53ms` from Ashburn, US
73.183.93.23	AS7922 Comcast Cable Communications, LLC	`9.21ms` from Ashburn, US
37.138.245.7	AS9145 EWE TEL GmbH	`11.36ms` from Frankfurt am Main, DE
183.148.93.23	AS4134 CHINANET-BACKBONE	`10.38ms` from Hangzhou, CN
88.115.203.71	AS719 Elisa Oyj	`5.23ms` from Helsinki, FI
222.231.11.103	AS3786 LG DACOM Corporation	`1.13ms` from Incheon, KR
31.113.56.87	AS2856 British Telecommunications PLC	`2.99ms` from London, GB
79.226.9.183	AS3320 Deutsche Telekom AG	`4.83ms` from Nuernberg, DE
195.42.250.55	AS20675 BOURSORAMA S.A.	`0.87ms` from Paris, FR
48.192.17.55	AS8075 Microsoft Corporation	`0.30ms` from Quincy, US
92.42.28.135	AS5495 Saint Petersburg State University	`1.81ms` from Saint Petersburg, RU

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 172.56.167.20

traceroute to 172.56.167.20 (172.56.167.20): 10 hops max, 52 byte packets

4 [AS63949] 173.230.159.133 0.275 ms

5 [AS20940] 23.203.158.50 0.748 ms

6 [AS20940] 23.207.232.33 0.577 ms

7 [AS21928] 66.94.0.36 0.759 ms

8 *

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Measurement taken from

IPinfo ProbeNet in Santa Clara, US

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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