100.128.0.0/9

AS21928 · T-Mobile USA, Inc.

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Summary

Country	United States
Domain	t-mobile.com
ASN	AS21928
Registry	ARIN
ID	CORE2

WHOIS Details

NetHandle:      NET-100-128-0-0-1
OrgID:          TMOBI
Parent:         NET-100-0-0-0-0
NetName:        CORE2
NetRange:       100.128.0.0 - 100.255.255.255
NetType:        allocation
RegDate:        2012-02-27
Updated:        2012-05-24
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:        2025-01-09
OfficePhone:    +1-888-662-4662
Mailbox:        ARINtechcontact@t-mobile.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 100.0.0.0/8

Range	ASN	Company	Num of IPs
100.48.0.0/12	AS14618	Amazon Data Services Northern Virginia	1,048,576
100.24.0.0/13	AS14618	Amazon Data Services Northern Virginia	524,288
100.20.0.0/14	AS16509	Amazon.com, Inc.	262,144
100.44.0.0/14	AS14654	AT&T Enterprises, LLC	262,144
100.43.192.0/18	AS14265	TPx Communications	16,384
100.43.64.0/19	AS208398	Edge Technology Plus d.o.o. Beograd	8,192
100.43.96.0/19	AS22995	Xplore Inc.	8,192
100.43.32.0/19	AS53809	Texas Tech University Health Sciences Center at El Paso	8,192
100.42.240.0/20	AS11260	EastLink	4,096
100.42.160.0/20	AS13692	Douglas FastNet	4,096
100.42.64.0/20	AS16509	Amazon.com, Inc.	4,096
100.42.32.0/20	AS17004	Kentucky Wimax	4,096
100.42.208.0/20	AS18450	WebNX, Inc.	4,096
100.42.144.0/20	AS20030	Artelco	4,096
100.42.128.0/20	AS26732	Wagner College	4,096
100.42.0.0/20	AS36426	IsoTropic Networks, Inc.	4,096
100.42.16.0/20	AS46841	Fork Networking, LLC	4,096
100.42.224.0/20	AS54288	SolidTools Technology, Inc.	4,096
100.42.184.0/21	AS51167	Contabo GmbH	2,048
100.42.176.0/21	AS51167	Contabo GmbH	2,048
100.43.22.0/23	AS174	APOG-HOWARD	512
100.43.20.0/23	AS395597	Apogee-Furman	512
100.43.24.0/23	AS40082	APOG-CofC	512
100.43.28.0/23	AS395597	APOG-GSU	512
100.43.27.0/24	AS395597	APOG-ATL-COLO	256
100.43.30.0/24	AS395597	APOG-GSU	256
100.43.3.0/24	AS395597	APOG-MOOREHOUSEC-24	256
100.43.5.0/24	AS395597	BOLD-CACC	256
100.43.13.0/24	AS400614	University of the Ozarks	256
100.43.2.0/24	AS40082	APOG-CofC	256
100.42.89.0/24	AS62643	The Community Agency	256
100.43.0.0/24	AS22773	BOLD-UniversityWestFlorida	256
100.42.26.0/24	AS17676	SoftBank Corp	256
100.42.17.0/24	AS26241	Castle VPN	256
100.42.193.0/24	AS32524	M9 Systems	256
100.42.27.0/24	AS54098	Fork Networking	256
100.43.14.0/24	AS3356	Lock Haven University	256
100.42.92.0/24	AS62643	The Community Agency	256
100.43.31.0/24	AS395461	Apogee Dev Lab	256
100.43.12.0/24	AS395597	Apogee - Morehouse College	256
100.43.26.0/24	AS395597	APOG-GSU	256

Hosted domains

There are 291 domain names hosted across 59 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
100.200.30.42	limitmfx.com	112
100.200.30.41	modestocabinets.com	87
100.150.100.7	instantupdater.xyz	16
100.172.94.1	studiodentisticogodeassipozzi.it	10
100.200.30.40	wadsworthtravel.com	3
100.204.28.97	napabouncebash.com	3
100.200.100.200	prestan.us	3
100.204.208.97	barabu.pt	3
100.247.208.97	multiservicioslimagt.com	3
100.240.208.97	spraytandenhaag.nl	2
100.145.50.162	rooptex.com	2
100.173.196.1	fs-yasha.com	2
100.244.208.97	xxplosivecandy.com	2
100.181.61.121	flounderfinance.com	1
100.200.158.151	hgb.com.cn	1
100.170.132.100	forexgate.in	1
100.153.0.70	psctexas.cloud	1
100.241.226.222	shayip.com	1
100.136.200.118	metaverifiedsupport.net	1
100.137.23.17	nsake.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
81.204.220.57	AS1136 KPN B.V.	`1.10ms` from Amsterdam, NL
123.115.218.201	AS4808 China Unicom Beijing Province Network	`3.50ms` from Beijing, CN
35.164.77.41	AS16509 Amazon.com, Inc.	`0.13ms` from Boardman, US
223.190.231.73	AS24560 Bharti Airtel Ltd., Telemedia Services	`12.87ms` from Chennai, IN
103.127.93.89	AS138509 RELATION CABLE NETWORK	`3.85ms` from Dhaka, BD
37.24.79.137	AS3209 Vodafone GmbH	`9.14ms` from Frankfurt am Main, DE
14.234.249.25	AS45899 VNPT Corp	`2.16ms` from Ho Chi Minh City, VN
202.69.41.105	AS23750 GERRYS INFORMATION TECHNOLOGY PVT LTD.	`0.34ms` from Karachi, PK
5.148.57.217	AS25180 Exponential-E Ltd.	`0.46ms` from London, GB
189.109.11.153	AS10429 TELEFÔNICA BRASIL S.A	`1.49ms` from Osasco, BR
72.214.218.153	AS22773 Cox Communications Inc.	`0.76ms` from Phoenix, US
34.231.62.185	AS14618 Amazon.com, Inc.	`0.20ms` from Reston, US
188.143.202.249	AS44050 Petersburg Internet Network ltd.	`0.91ms` from Saint Petersburg, RU
189.131.121.201	AS8151 UNINET	`4.33ms` from Santiago de Queretaro, MX
14.52.239.137	AS4766 Korea Telecom	`1.38ms` from Seoul, KR
121.151.4.121	AS4766 Korea Telecom	`4.64ms` from Seoul, KR
119.206.160.137	AS4766 Korea Telecom	`5.06ms` from Seoul, KR
123.248.77.9	AS9845 LG HelloVision Corp.	`13.34ms` from Seoul, KR
101.231.244.121	AS4812 China Telecom (Group)	`5.17ms` from Shanghai, CN
175.156.210.41	AS4773 MobileOne Ltd. Mobile/Internet Service Provider Singapore	`1.51ms` from Singapore, SG
62.99.174.217	AS8412 T-Mobile Austria GmbH	`3.42ms` from Vienna, AT
122.189.170.41	AS4837 CHINA UNICOM China169 Backbone	`5.26ms` from Wuhan, CN
195.86.222.169	AS3257 GTT Communications Inc.	`0.46ms` from Amsterdam, NL
68.185.138.41	AS20115 Charter Communications LLC	`15.53ms` from Atlanta, US
73.207.224.153	AS7922 Comcast Cable Communications, LLC	`4.18ms` from Atlanta, US

Traceroute

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

traceroute -a -n -q1 -f3 -m15 100.144.238.83

traceroute to 100.144.238.83 (100.144.238.83): 15 hops max, 52 byte packets

3 [] 15.230.139.226 4.453 ms

4 *

5 *

6 *

7 [AS16509] 99.83.112.218 1447.48 ms

8 *

9 *

10 *

11 *

12 [AS6461] 64.125.31.51 35.703 ms

13 *

14 *

15 *

Measurement taken from

IPinfo ProbeNet in Atlanta, US

On November 22nd 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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