172.58.128.0/21

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:      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 172.58.128.0/21

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 7 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
172.58.128.220	wiarit.hu	2
172.58.132.47	neurosys.cloud	1
172.58.129.129	wattprolab.com	1
172.58.135.164	barbaretta.net	1
172.58.132.45	divinitytaxandfinancialgroup.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
44.228.59.213	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
70.100.102.197	AS5650 Frontier Communications of America, Inc.	`13.87ms` from Chicago, US
69.13.176.101	AS54489 CoreSpace, Inc.	`0.86ms` from Dallas, US
191.100.90.133	AS27668 ETAPA EP	`6.59ms` from Guayaquil, EC
23.87.68.21	AS20115 Charter Communications LLC	`12.34ms` from Minneapolis, US
187.209.33.165	AS8151 UNINET	`2.15ms` from Monterrey, MX
44.202.231.117	AS14618 Amazon.com, Inc.	`0.42ms` from Reston, US
122.36.138.53	AS17858 LG POWERCOMM	`1.93ms` from Seoul, KR
1.212.133.133	AS3786 LG DACOM Corporation	`1.64ms` from Seoul, KR
13.214.25.117	AS16509 Amazon.com, Inc.	`0.28ms` from Singapore, SG
39.109.196.5	AS55430 Starhub Ltd	`1.43ms` from Singapore, SG
133.125.12.229	AS7684 SAKURA Internet Inc.	`16.34ms` from Tokyo, JP
35.82.111.101	AS16509 Amazon.com, Inc.	`0.17ms` from Boardman, US
178.48.97.21	AS21334 One Hungary Ltd.	`3.55ms` from Budapest, HU
38.89.227.5	AS174 Cogent Communications, LLC	`1.62ms` from Chicago, US
208.59.107.85	AS6079 RCN	`7.97ms` from Chicago, US
80.197.184.53	AS3292 TDC Holding A/S	`1.27ms` from Copenhagen, DK
189.112.82.181	AS16735 ALGAR TELECOM S/A	`1.01ms` from Curitiba, BR
109.78.26.21	AS15502 Vodafone Ireland Limited	`3.15ms` from Dublin, IE
77.176.136.245	AS6805 Telefonica Germany GmbH & Co.OHG	`4.90ms` from Duesseldorf, DE
187.12.153.37	AS7738 V tal	`0.52ms` from Fortaleza, BR
107.195.52.85	AS7018 AT&T Enterprises, LLC	`10.79ms` from Houston, US
109.146.39.245	AS2856 British Telecommunications PLC	`10.23ms` from London, GB
62.42.20.5	AS6739 VODAFONE ONO, S.A.	`10.68ms` from Madrid, ES
45.168.79.37	AS268039 CASAGRANDE & DE ANGELI LTDA ME	`15.62ms` 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 172.58.131.148

traceroute to 172.58.131.148 (172.58.131.148): 6 hops max, 52 byte packets

1 [AS31898] 140.204.222.204 0.12 ms

2 [AS21928] 66.94.0.89 0.518 ms

3 [AS21928] 66.94.0.88 0.546 ms

4 *

5 *

6 *

Measurement taken from

IPinfo ProbeNet in Ashburn, US

On December 14th 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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