172.56.80.0/21

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 172.56.80.0/21

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 11 domain names hosted across 11 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
194.156.227.37	AS16276 OVH SAS	`0.12ms` from Beauharnois, CA
4.152.161.117	AS8075 Microsoft Corporation	`0.31ms` from Boydton, US
57.132.154.181	AS7459 Grande Communications Networks, LLC	`5.12ms` from Dallas, US
185.131.83.245	AS203352 Neyrial AS	`3.16ms` from Geneve, CH
120.55.200.69	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`4.66ms` from Hangzhou, CN
168.149.95.197	AS25019 Saudi Telecom Company JSC	`1.36ms` from Jeddah, SA
24.199.26.165	AS20001 Charter Communications Inc	`3.42ms` from Los Angeles, US
38.173.116.37	AS398823 PEG TECH INC	`0.33ms` from Los Angeles, US
195.53.82.149	AS57117 Rural Servicios Informaticos SL	`1.62ms` from Madrid, ES
184.24.238.133	AS16625 Akamai Technologies, Inc.	`0.14ms` from Milan, IT
67.9.110.213	AS33363 Charter Communications, Inc	`9.24ms` from Orlando, US
176.176.106.181	AS5410 Bouygues Telecom SA	`4.64ms` from Saint-Denis, FR
222.102.58.197	AS4766 Korea Telecom	`5.54ms` from Seoul, KR
202.156.40.181	AS4657 StarHub Ltd	`1.27ms` from Singapore, SG
14.203.104.213	AS7545 TPG Telecom Limited	`5.47ms` from Sydney, AU
111.250.65.53	AS3462 Data Communication Business Group	`2.62ms` from Taipei, TW
154.247.128.245	AS36947 Telecom Algeria	`13.51ms` from Algiers, DZ
108.225.221.165	AS7018 AT&T Enterprises, LLC	`18.29ms` from Chicago, US
54.216.141.133	AS16509 Amazon.com, Inc.	`0.18ms` from Dublin, IE
76.133.66.69	AS7922 Comcast Cable Communications, LLC	`5.02ms` from Fremont, US
80.70.144.5	AS57084 Bjare Kraft ekonomisk forening	`3.82ms` from Goeteborg, SE
61.140.181.117	AS4134 CHINANET-BACKBONE	`1.68ms` from Guangzhou, CN
175.115.204.5	AS9318 SK Broadband Co Ltd	`3.24ms` from Incheon, KR
195.29.210.245	AS5391 Hrvatski Telekom d.d.	`3.11ms` from Ljubljana, SI
4.37.148.85	AS3356 Level 3 Parent, LLC	`0.37ms` from Los Angeles, US

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 172.56.86.117

traceroute to 172.56.86.117 (172.56.86.117): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.067 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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