172.56.208.0/23

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 172.56.208.0/23

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 2 domain names hosted across 2 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.56.209.226	courtofmontecristo.com	1
172.56.209.30	conesystems.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
18.206.172.103	AS14618 Amazon.com, Inc.	`0.56ms` from Ashburn, US
190.104.68.247	AS52268 COPELCO LTDA. (CUTRAL-CO)	`18.14ms` from Buenos Aires, AR
83.113.156.7	AS3215 Orange S.A.	`10.93ms` from Frankfurt am Main, DE
114.55.223.247	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`5.51ms` from Hangzhou, CN
182.70.92.55	AS24560 Bharti Airtel Ltd., Telemedia Services	`2.53ms` from Lohogaon, IN
52.60.222.215	AS16509 Amazon.com, Inc.	`0.13ms` from Montreal, CA
186.239.35.199	AS10429 TELEFÔNICA BRASIL S.A	`0.74ms` from Osasco, BR
88.166.236.39	AS12322 Free SAS	`2.61ms` from Paris, FR
90.45.22.247	AS3215 Orange S.A.	`5.36ms` from Paris, FR
83.113.77.231	AS3215 Orange S.A.	`11.45ms` from Paris, FR
116.73.168.247	AS17488 Hathway IP Over Cable Internet	`1.40ms` from Saint Thomas Mount, IN
117.193.123.231	AS9829 National Internet Backbone	`15.80ms` from Saint Thomas Mount, IN
116.42.214.87	AS17858 LG POWERCOMM	`1.67ms` from Seoul, KR
110.47.236.71	AS18313 LG HelloVision Corp.	`1.32ms` from Seoul, KR
136.226.85.167	AS22616 ZSCALER, INC.	`0.18ms` from Chicago, US
51.186.104.103	AS5607 Sky UK Limited	`1.35ms` from Dublin, IE
23.224.32.215	AS40065 CNSERVERS LLC	`0.28ms` from Los Angeles, US
95.20.71.23	AS12479 Orange Espagne SA	`2.57ms` from Madrid, ES
92.26.143.23	AS13285 TalkTalk Communications Limited	`4.71ms` from Manchester, GB
188.77.201.103	AS12479 Orange Espagne SA	`10.06ms` from Marseille, FR
36.224.252.87	AS3462 Data Communication Business Group	`1.13ms` from Taipei, TW
23.10.168.103	AS16625 Akamai Technologies, Inc.	`0.10ms` from Toronto, CA
85.2.117.55	AS3303 Swisscom (Switzerland) Ltd	`2.40ms` from Zuerich, CH
138.119.194.183	AS611 NB-PEI Educational Computer Network	`13.47ms` from Beauharnois, CA
20.10.252.247	AS8075 Microsoft Corporation	`0.30ms` from Boydton, 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 172.56.208.35

traceroute to 172.56.208.35 (172.56.208.35): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.230 0.161 ms

2 [AS21928] 66.94.0.89 0.612 ms

3 [AS21928] 66.94.0.88 0.619 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

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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