172.56.210.0/23

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 172.56.210.0/23

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
74.96.37.39	AS701 Verizon Business	`2.12ms` from Ashburn, US
24.3.98.71	AS7922 Comcast Cable Communications, LLC	`11.14ms` from Ashburn, US
69.225.44.183	AS7018 AT&T Enterprises, LLC	`2.26ms` from Chicago, US
97.139.138.167	AS6167 Verizon Business	`7.77ms` from Denver, US
119.41.75.71	AS4134 CHINANET-BACKBONE	`2.33ms` from Haikou, CN
45.193.202.71	AS134548 DXTL Tseung Kwan O Service	`1.01ms` from Hong Kong, HK
149.22.187.103	AS201838 Community Fibre Limited	`1.46ms` from London, GB
58.190.213.55	AS17511 OPTAGE Inc.	`2.19ms` from Osaka, JP
71.223.109.183	AS209 CenturyLink Communications, LLC	`2.38ms` from Phoenix, US
45.46.217.23	AS11351 Charter Communications Inc	`13.09ms` from Piscataway, US
190.136.82.23	AS7303 Telecom Argentina S.A.	`3.84ms` from Rosario, AR
187.171.34.199	AS8151 UNINET	`8.94ms` from Santiago de Queretaro, MX
23.205.211.87	AS4657 StarHub Ltd	`0.40ms` from Singapore, SG
84.110.116.151	AS8551 Bezeq International Ltd.	`0.20ms` from Tel Aviv, IL
126.66.118.151	AS17676 SoftBank Corp.	`4.89ms` from Tokyo, JP
83.5.71.167	AS5617 Orange Polska Spolka Akcyjna	`1.95ms` from Warsaw, PL
192.34.161.39	AS4922 Shenandoah Cable Television LLC	`11.16ms` from Ashburn, US
131.203.179.23	AS9790 Two Degrees Networks Limited	`0.47ms` from Auckland, NZ
114.253.45.199	AS4808 China Unicom Beijing Province Network	`3.34ms` from Beijing, CN
208.110.176.7	AS26862 FULLNET INC	`13.40ms` from Chicago, US
119.91.87.199	AS45090 Shenzhen Tencent Computer Systems Company Limited	`2.08ms` from Guangzhou, CN
80.244.183.39	AS61323 ANS ACADEMY LIMITED	`1.05ms` from Manchester, GB
8.212.170.71	AS45102 Alibaba (US) Technology Co., Ltd.	`0.14ms` from Manila, PH
153.142.57.199	AS4713 NTT DOCOMO BUSINESS,Inc.	`11.26ms` from Osaka, JP
177.121.186.247	AS26615 TIM S/A	`2.05ms` from Osasco, BR

Traceroute

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

traceroute -a -n -q1 -m6 172.56.210.112

traceroute to 172.56.210.112 (172.56.210.112): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.204 0.168 ms

2 [AS21928] 66.94.0.89 26.034 ms

3 [AS21928] 66.94.0.88 0.815 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On December 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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