172.56.88.0/23

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:        [email protected]
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:        [email protected]
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 172.56.88.0/23

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
172.56.89.184	revmikemagee.net	1
172.56.88.236	stolenwatchco.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
91.47.104.247	AS3320 Deutsche Telekom AG	`5.83ms` from Frankfurt am Main, DE
171.245.91.167	AS7552 Viettel Group	`2.62ms` from Hanoi, VN
117.197.229.231	AS9829 National Internet Backbone	`1.28ms` from Kolkata, IN
187.249.22.231	AS32098 Transtelco Inc	`3.77ms` from Los Angeles, US
191.189.113.231	AS28573 Claro NXT Telecomunicacoes Ltda	`9.62ms` from Osasco, BR
121.179.76.183	AS4766 Korea Telecom	`5.07ms` from Seoul, KR
211.37.24.167	AS9318 SK Broadband Co Ltd	`1.54ms` from Seoul, KR
203.42.220.39	AS1221 Telstra Limited	`1.16ms` from Sydney, AU
61.63.18.167	AS18042 Koos Broadband Telecom	`1.09ms` from Taipei, TW
110.1.17.71	AS10013 FreeBit Co.,Ltd.	`12.84ms` from Tokyo, JP
46.161.40.247	AS57043 HOSTKEY B.V.	`0.36ms` from Amsterdam, NL
191.92.180.71	AS27831 Colombia Móvil	`7.11ms` from Bogota, CO
20.85.73.151	AS8075 Microsoft Corporation	`0.30ms` from Boydton, US
98.1.82.23	AS11351 Charter Communications Inc	`19.27ms` from Chicago, US
14.180.102.103	AS45899 VNPT Corp	`2.38ms` from Hanoi, VN
5.78.100.231	AS212317 Hetzner Online GmbH	`0.18ms` from Hillsboro, US
39.37.146.87	AS17557 Pakistan Telecommunication Company Limited	`2.28ms` from Lahore, PK
194.249.138.23	AS2107 ARNES	`0.67ms` from Ljubljana, SI
85.87.112.55	AS12338 Euskaltel S.A.	`8.56ms` from Madrid, ES
70.109.137.103	AS13977 Fidium	`3.49ms` from Montreal, CA
171.37.175.151	AS4837 CHINA UNICOM China169 Backbone	`2.66ms` from Nanning, CN
15.228.90.231	AS16509 Amazon.com, Inc.	`1.76ms` from Osasco, BR
133.194.0.7	AS2497 Internet Initiative Japan Inc.	`1.44ms` from Tokyo, JP
122.131.70.231	AS2518 BIGLOBE Inc.	`14.71ms` from Tokyo, JP
105.109.10.55	AS36947 Telecom Algeria	`11.30ms` from Tunis, TN

Traceroute

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

traceroute -a -n -q1 -f4 -m9 172.56.88.161

traceroute to 172.56.88.161 (172.56.88.161): 9 hops max, 52 byte packets

4 [AS63949] 173.255.239.102 6.444 ms

5 [AS20940] 23.203.154.42 0.765 ms

6 [AS21928] 66.94.0.84 1.324 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Morris Plains, US

On November 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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