172.56.74.0/23

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 172.56.74.0/23

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 no domains currently hosted on this ASN.

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
95.211.103.151	AS60781 LeaseWeb Netherlands B.V.	`0.24ms` from Amsterdam, NL
93.239.62.71	AS3320 Deutsche Telekom AG	`4.94ms` from Duesseldorf, DE
36.140.137.247	AS9808 China Mobile Communications Group Co., Ltd.	`5.82ms` from Fuzhou, CN
27.227.72.199	AS4134 CHINANET-BACKBONE	`5.17ms` from Lanzhou, CN
186.53.56.215	AS6057 Administracion Nacional de Telecomunicaciones	`1.73ms` from Montevideo, UY
13.235.60.7	AS16509 Amazon.com, Inc.	`0.28ms` from Mumbai, IN
88.204.100.183	AS33892 LLC "Severskelectrosvyaz"	`5.50ms` from Novosibirsk, RU
34.91.238.87	AS396982 Google LLC	`0.14ms` from Oudeschip, NL
189.90.148.183	AS53112 SULNET TELECOM	`12.17ms` from Porto Alegre, BR
39.75.130.231	AS4837 CHINA UNICOM China169 Backbone	`4.92ms` from Qingdao, CN
200.244.24.7	AS4230 CLARO S.A.	`7.48ms` from Rio de Janeiro, BR
220.77.141.247	AS4766 Korea Telecom	`7.07ms` from Seoul, KR
1.240.172.247	AS9318 SK Broadband Co Ltd	`1.92ms` from Seoul, KR
182.117.113.183	AS4837 CHINA UNICOM China169 Backbone	`3.13ms` from Zhengzhou, CN
61.168.234.7	AS4837 CHINA UNICOM China169 Backbone	`3.19ms` from Zhengzhou, CN
89.12.240.39	AS6805 Telefonica Germany GmbH & Co.OHG	`2.97ms` from Berlin, DE
83.240.166.71	AS15525 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A.	`1.23ms` from Braga, PT
3.168.228.71	AS16509 Amazon.com, Inc.	`1.13ms` from Istanbul, TR
98.186.90.231	AS22773 Cox Communications Inc.	`13.05ms` from Kansas City, US
173.171.19.247	AS33363 Charter Communications, Inc	`9.64ms` from Orlando, US
126.92.240.167	AS17676 SoftBank Corp.	`3.70ms` from Osaka, JP
50.3.127.215	AS62904 Eonix Corporation	`0.36ms` from Phoenix, US
152.166.55.247	AS28118 ALTICE DOMINICANA S.A.	`9.87ms` from Santo Domingo, DO
87.71.75.87	AS12400 Partner Communications Ltd.	`2.00ms` from Tel Aviv, IL
212.24.107.87	AS212531 Interneto vizija	`0.80ms` from Vilnius, LT

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 172.56.75.183

traceroute to 172.56.75.183 (172.56.75.183): 9 hops max, 52 byte packets

4 [AS63949] 173.230.159.134 0.743 ms

5 [AS20940] 23.203.158.52 0.721 ms

6 [AS21928] 66.94.0.36 0.875 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Santa Clara, 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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