172.56.248.0/21

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 172.56.248.0/21

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 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

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

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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
197.112.51.37	AS36947 Telecom Algeria	`0.78ms` from Algiers, DZ
122.59.147.69	AS4771 Spark New Zealand Trading Ltd.	`3.47ms` from Auckland, NZ
103.113.179.37	AS137566 Supernap Thailand Company Limited	`2.54ms` from Bangkok, TH
87.106.117.117	AS8560 IONOS SE	`0.59ms` from Berlin, DE
197.166.94.85	AS24863 Link Egypt (Link.NET)	`13.60ms` from Cairo, EG
190.115.222.165	AS270828 Full Telecom LTDA	`7.00ms` from Curitiba, BR
174.137.2.149	AS46632 Southwest Arkansas Telephone Cooperative	`6.61ms` from Dallas, US
179.191.178.69	AS52580 Azion Technologies Ltda.	`0.08ms` from Johannesburg, ZA
60.217.118.197	AS4837 CHINA UNICOM China169 Backbone	`4.53ms` from Qingdao, CN
14.71.41.101	AS4766 Korea Telecom	`1.79ms` from Seoul, KR
1.232.246.133	AS9318 SK Broadband Co Ltd	`1.33ms` from Seoul, KR
13.251.239.149	AS16509 Amazon.com, Inc.	`0.09ms` from Singapore, SG
222.75.107.133	AS4134 CHINANET-BACKBONE	`5.32ms` from Zhongwei, CN
83.111.161.37	AS5384 Emirates Internet	`2.21ms` from Al Fujairah City, AE
66.58.223.245	AS8047 GENERAL COMMUNICATION, INC.	`6.72ms` from Anchorage, US
31.210.228.53	AS42666 Embou Nuevas Tecnologias SL	`11.91ms` from Barcelona, ES
67.179.1.5	AS7922 Comcast Cable Communications, LLC	`4.20ms` from Boston, US
89.154.77.197	AS2860 NOS COMUNICACOES, S.A.	`5.41ms` from Braga, PT
124.19.18.101	AS7474 SingTel Optus Pty Ltd	`0.90ms` from Brisbane, AU
84.0.228.165	AS5483 Magyar Telekom Plc.	`2.67ms` from Budapest, HU
222.161.239.245	AS4837 CHINA UNICOM China169 Backbone	`0.65ms` from Changchun, CN
118.122.30.117	AS4134 CHINANET-BACKBONE	`8.44ms` from Chengdu, CN
38.124.15.165	AS36498 Access One Inc.	`0.51ms` from Chicago, US
87.174.53.53	AS3320 Deutsche Telekom AG	`8.21ms` from Frankfurt am Main, DE
90.198.35.149	AS5607 Sky UK Limited	`3.63ms` from London, GB

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 172.56.253.74

traceroute to 172.56.253.74 (172.56.253.74): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.077 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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