172.56.66.0/23

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 172.56.66.0/23

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 6 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
172.56.66.190	kevinsauls.com	2
172.56.66.132	soozerama.com	2
172.56.67.182	thegamingnerds.com	1
172.56.66.69	bray.house	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
34.229.214.215	AS14618 Amazon.com, Inc.	`0.90ms` from Ashburn, US
125.68.115.199	AS4134 CHINANET-BACKBONE	`4.37ms` from Chengdu, CN
20.25.255.87	AS8075 Microsoft Corporation	`0.21ms` from Chicago, US
51.37.59.135	AS15502 Vodafone Ireland Limited	`3.66ms` from Dublin, IE
20.54.96.247	AS8075 Microsoft Corporation	`0.15ms` from Dublin, IE
177.30.57.183	AS26615 TIM S/A	`12.96ms` from Fortaleza, BR
184.85.155.103	AS16625 Akamai Technologies, Inc.	`0.42ms` from Helsinki, FI
86.144.196.151	AS2856 British Telecommunications PLC	`1.93ms` from London, GB
82.1.81.103	AS5089 Virgin Media Limited	`6.22ms` from London, GB
79.6.175.7	AS3269 Telecom Italia S.p.A.	`7.79ms` from Naples, IT
173.198.248.103	AS40244 Turnkey Internet Inc.	`3.79ms` from New York City, US
92.158.115.87	AS3215 Orange S.A.	`5.61ms` from Paris, FR
203.233.91.55	AS9693 KFTC	`1.98ms` from Seoul, KR
178.221.117.231	AS8400 TELEKOM SRBIJA a.d.	`2.13ms` from Belgrade, RS
18.236.162.231	AS16509 Amazon.com, Inc.	`0.19ms` from Boardman, US
69.91.142.55	AS7015 Comcast Cable Communications, LLC	`0.44ms` from Boston, US
222.134.55.231	AS4837 CHINA UNICOM China169 Backbone	`6.36ms` from Jinan, CN
156.38.86.7	AS36924 GVA Cote d'Ivoire SAS	`1.50ms` from Lomé, TG
80.44.106.87	AS13285 TalkTalk Communications Limited	`7.67ms` from London, GB
165.227.237.103	AS14061 DigitalOcean, LLC	`0.25ms` from London, GB
99.61.62.135	AS7018 AT&T Enterprises, LLC	`2.65ms` from Miami, US
151.41.83.247	AS1267 WIND TRE S.P.A.	`7.97ms` from Milan, IT
92.153.145.87	AS3215 Orange S.A.	`7.40ms` from Paris, FR
20.72.254.151	AS8075 Microsoft Corporation	`0.15ms` from Quincy, US
76.133.169.119	AS7922 Comcast Cable Communications, LLC	`3.27ms` from San Jose, US

Traceroute

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

traceroute -a -n -q1 -m6 172.56.66.208

traceroute to 172.56.66.208 (172.56.66.208): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.184 0.228 ms

2 [AS21928] 66.94.0.89 0.637 ms

3 [AS21928] 66.94.0.88 0.745 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, 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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