172.58.56.0/21

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 172.58.56.0/21

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 172.58.0.0/16

Range	ASN	Company	Num of IPs
172.32.0.0/11	AS21928	T-Mobile USA, Inc.	2,097,152

Hosted domains

There are 8 domain names hosted across 6 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.58.56.123	410networks.com	3
172.58.57.231	diligencehomerentals.com	1
172.58.60.61	kearscott.net	1
172.58.59.138	cvacpumps.com	1
172.58.62.202	zxaciac.com	1
172.58.60.31	geneseeproperties.net	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
112.141.108.181	AS9443 Vocus Retail	`7.97ms` from Adelaide, AU
64.26.81.101	AS6189 Enoch-Pratt Free Library	`17.91ms` from Ashburn, US
125.222.100.5	AS4538 China Education and Research Network Center	`10.84ms` from Beijing, CN
73.249.239.181	AS7922 Comcast Cable Communications, LLC	`8.53ms` from Boston, US
190.112.21.149	AS28111 Grupo Solunet SRL	`1.25ms` from Buenos Aires, AR
172.234.195.101	AS63949 Akamai Connected Cloud	`0.35ms` from Chicago, US
18.219.16.229	AS16509 Amazon.com, Inc.	`0.19ms` from Columbus, US
212.146.150.149	AS15943 wilhelm.tel GmbH	`0.45ms` from Hamburg, DE
119.178.87.213	AS4837 CHINA UNICOM China169 Backbone	`5.29ms` from Jinan, CN
2.135.135.245	AS9198 JSC Kazakhtelecom	`7.86ms` from Karagandy, KZ
60.160.187.5	AS4134 CHINANET-BACKBONE	`3.10ms` from Kunming, CN
47.144.196.85	AS5650 Frontier Communications of America, Inc.	`3.55ms` from Los Angeles, US
128.78.121.165	AS5410 Bouygues Telecom SA	`2.86ms` from Marseille, FR
62.112.153.5	AS59642 UAB Cherry Servers	`0.34ms` from Amsterdam, NL
100.24.164.149	AS14618 Amazon.com, Inc.	`0.54ms` from Ashburn, US
74.124.180.69	AS22709 North State Telephone, LLC	`7.39ms` from Atlanta, US
45.129.69.69	AS15404 COLT Technology Services Group Limited	`1.73ms` from Brussels, BE
176.62.169.85	AS34762 Combell NV	`0.30ms` from Brussels, BE
109.133.170.245	AS5432 Proximus NV	`1.82ms` from Brussels, BE
168.92.136.181	AS2707 First Communications LLC	`4.30ms` from Buffalo, US
34.171.252.85	AS396982 Google LLC	`0.12ms` from Council Bluffs, US
134.96.227.85	AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.	`5.60ms` from Frankfurt am Main, DE
40.104.125.213	AS8075 Microsoft Corporation	`0.49ms` from Gaevle, SE
212.146.33.101	AS16086 DNA Oyj	`0.52ms` from Helsinki, FI
77.201.188.101	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`11.36ms` from Saint-Denis, FR

Traceroute

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

traceroute -a -n -q1 -m4 172.58.61.208

traceroute to 172.58.61.208 (172.58.61.208): 4 hops max, 52 byte packets

1 [AS210756] 146.185.199.3 0.543 ms

2 *

3 *

4 *

Measurement taken from

IPinfo ProbeNet in Novosibirsk, RU

On March 20th 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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