172.56.156.0/23

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 172.56.156.0/23

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
86.84.21.151	AS1136 KPN B.V.	`1.19ms` from Amsterdam, NL
172.235.191.119	AS63949 Akamai Connected Cloud	`0.55ms` from Amsterdam, NL
96.237.63.231	AS701 Verizon Business	`1.52ms` from Boston, US
18.254.215.55	AS8987 Amazon Data Services Ireland Ltd	`0.80ms` from Columbus, US
157.97.43.215	AS15817 Mittwald CM Service GmbH und Co. KG	`3.21ms` from Hamburg, DE
119.62.192.39	AS4837 CHINA UNICOM China169 Backbone	`12.13ms` from Kunming, CN
119.114.5.39	AS4837 CHINA UNICOM China169 Backbone	`4.52ms` from Liaoyang, CN
182.90.193.167	AS4837 CHINA UNICOM China169 Backbone	`3.79ms` from Nanning, CN
66.127.124.55	AS7018 AT&T Enterprises, LLC	`4.20ms` from Redding, US
151.75.219.247	AS1267 WIND TRE S.P.A.	`5.11ms` from Rome, IT
77.127.9.119	AS12400 Partner Communications Ltd.	`2.25ms` from Tel Aviv, IL
121.22.180.119	AS4837 CHINA UNICOM China169 Backbone	`10.04ms` from Tianjin, CN
76.119.171.151	AS7922 Comcast Cable Communications, LLC	`7.20ms` from Boston, US
24.91.55.87	AS7922 Comcast Cable Communications, LLC	`7.75ms` from Boston, US
45.150.179.183	AS204646 web2objects GmbH	`0.57ms` from Frankfurt am Main, DE
36.141.42.23	AS9808 China Mobile Communications Group Co., Ltd.	`5.58ms` from Guangzhou, CN
117.169.4.247	AS9808 China Mobile Communications Group Co., Ltd.	`2.87ms` from Nanchang, CN
58.210.234.135	AS4134 CHINANET-BACKBONE	`4.02ms` from Nanjing, CN
151.31.155.215	AS1267 WIND TRE S.P.A.	`3.29ms` from Rome, IT
1.235.167.199	AS9318 SK Broadband Co Ltd	`1.26ms` from Seoul, KR
92.206.26.183	AS16202 Tele Columbus AG	`10.57ms` from Berlin, DE
35.80.100.87	AS16509 Amazon.com, Inc.	`0.15ms` from Boardman, US
124.232.164.7	AS63835 CT-HuNan-Changsha-IDC	`0.68ms` from Changsha, CN
3.131.133.215	AS16509 Amazon.com, Inc.	`1.00ms` from Columbus, US
97.178.100.167	AS6167 Verizon Business	`16.92ms` from Dallas, US

Traceroute

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

traceroute -a -n -q1 -m6 172.56.156.127

traceroute to 172.56.156.127 (172.56.156.127): 6 hops max, 52 byte packets

1 [AS31898] 140.91.196.115 0.19 ms

2 [AS21928] 66.94.0.89 0.63 ms

3 [AS21928] 66.94.0.88 0.695 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On November 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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