172.56.64.0/21

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:      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 172.56.64.0/21

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 20 domain names hosted across 13 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.65.120	nidavellir.in	4
172.56.66.132	soozerama.com	2
172.56.64.201	choppala.com	1
172.56.67.102	conyers.fun	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
40.99.198.181	AS8075 Microsoft Corporation	`0.20ms` from Cardiff, GB
51.38.231.53	AS16276 OVH SAS	`0.17ms` from Gravelines, FR
72.177.227.37	AS11427 Charter Communications Inc	`8.97ms` from Houston, US
80.155.243.5	AS3320 Deutsche Telekom AG	`0.92ms` from Nuernberg, DE
210.168.203.197	AS2516 KDDI CORPORATION	`10.62ms` from Osaka, JP
45.139.52.37	AS49505 JSC Selectel	`1.10ms` from Saint Petersburg, RU
115.85.184.69	AS135354 NAVER BUSINESS PLATFORM ASIA PACIFIC PTE. LTD.	`1.04ms` from Seoul, KR
221.253.243.21	AS17506 ARTERIA Networks Corporation	`1.59ms` from Tokyo, JP
153.180.66.149	AS4713 NTT DOCOMO BUSINESS,Inc.	`2.47ms` from Tokyo, JP
3.12.76.37	AS16509 Amazon.com, Inc.	`0.12ms` from Columbus, US
85.224.250.149	AS8434 Telenor Sverige AB	`2.59ms` from Copenhagen, DK
185.122.67.69	AS56595 Fluency Communications Ltd	`0.48ms` from Edinburgh, GB
141.19.97.101	AS553 BelWue-Koordination	`2.06ms` from Frankfurt am Main, DE
60.13.205.165	AS4837 CHINA UNICOM China169 Backbone	`19.44ms` from Hami, CN
190.234.82.117	AS6147 INTEGRATEL PERÚ S.A.A.	`1.89ms` from Lima, PE
154.209.192.133	AS44559 IT HOSTLINE LTD	`0.21ms` from Madrid, ES
202.138.179.149	AS9299 Philippine Long Distance Telephone Company	`0.09ms` from Manila, PH
45.150.9.149	AS29182 JSC IOT	`0.37ms` from Moscow, RU
100.35.203.245	AS701 Verizon Business	`2.08ms` from New York City, US
122.27.108.101	AS4713 NTT DOCOMO BUSINESS,Inc.	`6.81ms` from Osaka, JP
200.250.157.181	AS4230 CLARO S.A.	`4.67ms` from Sao Paulo, BR
106.250.72.245	AS3786 LG DACOM Corporation	`1.68ms` from Seoul, KR
4.194.57.133	AS8075 Microsoft Corporation	`0.55ms` from Singapore, SG
5.13.115.85	AS8708 DIGI ROMANIA S.A.	`6.36ms` from Bacau, RO
68.45.147.133	AS7922 Comcast Cable Communications, LLC	`12.03ms` from Chicago, US

Traceroute

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

traceroute -a -n -q1 -f5 -m9 172.56.66.1

traceroute to 172.56.66.1 (172.56.66.1): 9 hops max, 52 byte packets

5 [AS20940] 23.203.158.52 0.572 ms

6 [AS21928] 66.94.0.36 0.806 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Santa Clara, US

On December 29th 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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