172.56.96.0/21

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 172.56.96.0/21

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

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
81.204.46.149	AS1136 KPN B.V.	`2.42ms` from Amsterdam, NL
172.68.70.245	AS13335 Cloudflare, Inc.	`0.36ms` from Atlanta, US
151.245.116.133	AS209854 Cyberzone S.A.	`2.38ms` from Ljubljana, SI
184.25.193.213	AS16625 Akamai Technologies, Inc.	`0.18ms` from London, GB
153.190.233.229	AS4713 NTT DOCOMO BUSINESS,Inc.	`10.17ms` from Osaka, JP
72.60.250.53	AS47583 Hostinger International Limited	`0.38ms` from Osasco, BR
144.24.14.213	AS31898 Oracle Corporation	`0.30ms` from Phoenix, US
44.200.43.53	AS14618 Amazon.com, Inc.	`0.38ms` from Reston, US
94.93.166.117	AS3269 Telecom Italia S.p.A.	`7.14ms` from Rome, IT
23.5.242.165	AS16625 Akamai Technologies, Inc.	`0.60ms` from San Jose, US
1.212.175.117	AS3786 LG DACOM Corporation	`1.82ms` from Seoul, KR
58.114.23.245	AS9416 Hoshin Multimedia Center Inc.	`8.69ms` from Taipei, TW
81.62.187.165	AS3303 Swisscom (Switzerland) Ltd	`1.43ms` from Zuerich, CH
20.62.227.101	AS8075 Microsoft Corporation	`0.47ms` from Ashburn, US
110.20.122.53	AS4804 Microplex PTY LTD	`2.94ms` from Brisbane, AU
34.22.150.229	AS396982 Google LLC	`0.14ms` from Brussels, BE
188.36.116.165	AS5483 Magyar Telekom Plc.	`2.76ms` from Budapest, HU
63.235.157.5	AS209 CenturyLink Communications, LLC	`5.59ms` from Chicago, US
185.77.213.5	AS205519 Damovo Deutschland GmbH & Co. KG	`0.79ms` from Duesseldorf, DE
122.241.200.37	AS4134 CHINANET-BACKBONE	`9.21ms` from Hangzhou, CN
113.168.235.149	AS45899 VNPT Corp	`3.16ms` from Hanoi, VN
1.56.33.85	AS4837 CHINA UNICOM China169 Backbone	`8.79ms` from Harbin, CN
42.115.179.229	AS18403 FPT Telecom Company	`2.23ms` from Ho Chi Minh City, VN
182.183.75.165	AS17557 Pakistan Telecommunication Company Limited	`1.26ms` from Islamabad, PK
180.130.106.69	AS4837 CHINA UNICOM China169 Backbone	`1.53ms` from Kunming, CN

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 172.56.96.186

traceroute to 172.56.96.186 (172.56.96.186): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.087 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

On March 21st 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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