172.56.182.0/23

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:        abuse@t-mobile.com
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

Overlapping Ranges

BGP prefixes that contain 172.56.182.0/23

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
186.170.134.183	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`19.63ms` from Bogotá, CO
71.70.148.39	AS11426 Charter Communications Inc	`11.57ms` from Charlotte, US
108.173.41.231	AS852 TELUS Communications Inc.	`2.93ms` from Edmonton, CA
16.163.117.7	AS16509 Amazon.com, Inc.	`0.12ms` from Hong Kong, HK
198.11.187.247	AS45102 Alibaba (US) Technology Co., Ltd.	`1.45ms` from Hong Kong, HK
176.38.28.231	AS39608 Lanet Network Ltd	`0.51ms` from Kyiv, UA
157.147.82.87	AS2527 Sony Network Communications Inc.	`9.05ms` from Tokyo, JP
54.192.215.167	AS16509 Amazon.com, Inc.	`0.86ms` from Bengaluru, IN
23.198.178.119	AS16625 Akamai Technologies, Inc.	`0.35ms` from Buenos Aires, AR
176.37.128.167	AS39608 Lanet Network Ltd	`0.49ms` from Kyiv, UA
148.102.20.23	AS19180 AMERICATEL PERU S.A.	`13.16ms` from Lima, PE
5.37.183.23	AS28885 OmanTel NAP	`2.77ms` from Muscat, OM
58.218.48.119	AS4134 CHINANET-BACKBONE	`5.59ms` from Nanjing, CN
86.213.226.183	AS3215 Orange S.A.	`10.56ms` from Paris, FR
70.180.24.39	AS22773 Cox Communications Inc.	`1.66ms` from Phoenix, US
49.161.206.167	AS17858 LG POWERCOMM	`1.64ms` from Seoul, KR
126.203.135.199	AS17676 SoftBank Corp.	`3.29ms` from Tokyo, JP
42.224.18.39	AS4837 CHINA UNICOM China169 Backbone	`2.68ms` from Zhengzhou, CN
194.219.60.135	AS1241 Forthnet	`1.97ms` from Athens, GR
47.94.149.103	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`2.00ms` from Beijing, CN
109.50.173.151	AS2860 NOS COMUNICACOES, S.A.	`3.28ms` from Braga, PT
18.118.18.39	AS16509 Amazon.com, Inc.	`0.72ms` from Columbus, US
143.83.64.23	AS5972 United States Department of Defense (DoD)	`10.49ms` from Dallas, US
198.99.81.215	AS397142 City of Fort Collins	`1.69ms` from Denver, US
73.26.144.215	AS7922 Comcast Cable Communications, LLC	`11.52ms` from Denver, 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 172.56.183.132

traceroute to 172.56.183.132 (172.56.183.132): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.57 0.074 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Liuzhou, CN

On March 13th 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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