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:        [email protected]
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

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 4 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

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
88.159.36.229	AS1136 KPN B.V.	`2.44ms` from Amsterdam, NL
23.135.44.85	AS2914 NTT America, Inc.	`0.22ms` from Ashburn, US
142.162.51.117	AS855 Bell Canada	`14.15ms` from Beauharnois, CA
98.28.87.229	AS10796 Charter Communications Inc	`14.42ms` from Columbus, US
195.245.4.213	AS6735 TNG Stadtnetz GmbH	`5.58ms` from Frankfurt am Main, DE
193.98.76.5	AS6833 Terranets bw GmbH	`4.72ms` from Frankfurt am Main, DE
83.13.171.5	AS5617 Orange Polska Spolka Akcyjna	`2.43ms` from Gdansk, PL
220.184.72.101	AS4134 CHINANET-BACKBONE	`7.72ms` from Hangzhou, CN
113.20.111.133	AS45903 CMC Telecom Infrastructure Company	`1.12ms` from Hanoi, VN
117.3.171.21	AS7552 Viettel Group	`16.67ms` from Ho Chi Minh City, VN
65.154.168.85	AS209 CenturyLink Communications, LLC	`0.61ms` from Los Angeles, US
5.139.113.165	AS12389 PJSC Rostelecom	`16.70ms` from Moscow, RU
221.248.27.101	AS17506 ARTERIA Networks Corporation	`0.62ms` from Osaka, JP
84.73.95.85	AS6730 Sunrise GmbH	`7.20ms` from Zuerich, CH
79.204.137.197	AS3320 Deutsche Telekom AG	`1.54ms` from Berlin, DE
91.238.236.37	AS58010 uvensys GmbH	`0.49ms` from Frankfurt am Main, DE
185.246.108.213	AS9009 M247 Europe SRL	`0.27ms` from Frankfurt am Main, DE
64.27.52.69	AS30475 Handy Networks, LLC	`0.14ms` from Greenwood Village, US
115.18.59.85	AS4766 Korea Telecom	`9.08ms` from Incheon, KR
217.221.59.245	AS8968 BT Italia S.p.A.	`1.36ms` from Milan, IT
176.146.181.69	AS5410 Bouygues Telecom SA	`7.50ms` from Paris, FR
221.215.76.245	AS4837 CHINA UNICOM China169 Backbone	`0.77ms` from Qingdao, CN
60.240.90.37	AS7545 TPG Telecom Limited	`0.28ms` from Sydney, AU
221.202.162.197	AS4837 CHINA UNICOM China169 Backbone	`11.56ms` from Tieling, CN
52.198.12.245	AS16509 Amazon.com, Inc.	`0.17ms` from Tokyo, JP

Traceroute

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

traceroute -a -n -q1 -m5 172.56.251.56

traceroute to 172.56.251.56 (172.56.251.56): 5 hops max, 52 byte packets

1 [AS7195] 200.25.69.57 2.056 ms

2 [AS7195] 200.25.75.46 6.528 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Guatemala City, GT

On January 30th 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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