172.56.32.0/23

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:      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 172.56.32.0/23

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 3 domain names hosted across 3 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.32.211	ritasonmlk.com	1
172.56.32.101	royalopsec.com	1
172.56.33.114	p8anets.com	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
18.204.156.215	AS14618 Amazon.com, Inc.	`0.51ms` from Ashburn, US
52.90.23.23	AS14618 Amazon.com, Inc.	`0.51ms` from Ashburn, US
195.251.127.215	AS5408 National Infrastructures for Research and Technology S.A.	`6.24ms` from Athens, GR
123.121.163.231	AS4808 China Unicom Beijing Province Network	`4.11ms` from Beijing, CN
183.69.144.7	AS4134 CHINANET-BACKBONE	`1.20ms` from Chongqing, CN
16.59.106.167	AS16509 Amazon.com, Inc.	`0.21ms` from Columbus, US
124.253.249.247	AS17917 Quadrant Televentures Limited	`10.09ms` from Delhi, IN
223.177.1.87	AS24560 Bharti Airtel Ltd., Telemedia Services	`6.12ms` from Delhi, IN
151.101.236.215	AS54113 Fastly, Inc.	`0.57ms` from Frankfurt am Main, DE
14.29.225.215	AS4134 CHINANET-BACKBONE	`1.82ms` from Guangzhou, CN
27.74.19.23	AS7552 Viettel Group	`1.69ms` from Ho Chi Minh City, VN
178.86.73.151	AS25019 Saudi Telecom Company JSC	`1.36ms` from Jeddah, SA
87.127.72.87	AS8468 ENTANET International Limited	`12.32ms` from London, GB
220.218.58.167	AS17506 ARTERIA Networks Corporation	`1.23ms` from Osaka, JP
181.178.226.23	AS11556 Cable & Wireless Panama	`1.77ms` from Panama, PA
76.144.92.231	AS7922 Comcast Cable Communications, LLC	`7.09ms` from Portland, US
136.60.140.7	AS16591 Google Fiber Inc.	`1.12ms` from Salt Lake City, US
86.97.85.55	AS5384 Emirates Internet	`3.00ms` from Al Fujairah City, AE
203.113.35.7	AS23969 TOT Public Company Limited	`1.46ms` from Bangkok, TH
94.226.234.39	AS6848 Telenet BV	`6.14ms` from Brussels, BE
156.212.0.55	AS8452 TE-AS	`7.31ms` from Cairo, EG
197.145.137.39	AS36884 Wana Corporate	`4.57ms` from Casablanca, MA
27.8.79.39	AS4837 CHINA UNICOM China169 Backbone	`3.74ms` from Chongqing, CN
24.162.153.199	AS11427 Charter Communications Inc	`7.36ms` from Dallas, US
27.44.120.247	AS134543 China Unicom Guangdong IP network	`3.01ms` from Guangzhou, CN

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 172.56.32.237

traceroute to 172.56.32.237 (172.56.32.237): 7 hops max, 52 byte packets

4 [AS21928] 100.199.0.93 0.084 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tieling, 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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