RDAP / Whois lookup

Look up authoritative registration records for a domain, IP, network prefix or ASN. Subdomains are resolved to their registrable domain automatically.

NET-172-32-0-0-1

Record foundARIN

TMO9DIRECT ALLOCATION

RDAP is structured authoritative registration data. Registration records and contacts do not establish current routing, device location or network safety.

Queried at10/15/2026, 07:54:57Live registry lookup

BGP routes RPKI check

Resource type: IP address
Registry: ARIN
Registration country / region: Not provided by registry
Registration status: Active
Registered at: 9/18/2012, 19:32:10
Last changed: 11/18/2020, 17:32:25

Resource range172.32.0.0 – 172.63.255.255IP address

Resource records1CIDR count

Public contacts3Published by the registry

Registry events2Authoritative change record

Authoritative registration details

Registry handle: NET-172-32-0-0-1
Name: TMO9
Allocation type: DIRECT ALLOCATION
Parent handle: NET-172-0-0-0-0
Whois server: whois.arin.net
Authoritative RDAP host: rdap.arin.net

Address and number range

Resource range: 172.32.0.0 – 172.63.255.255
Address family: IPv4
Resource records: 1
CIDR inventory: 172.32.0.0/11

Registration entities and contacts

Only public fields from the authoritative RDAP response are shown. Roles are assigned by the registry.

3 entities

Registrant

T-Mobile USA, Inc.TMOBI

Not provided by registry

12920 SE 38th Street · Bellevue · WA · 98006 · United States

AdministrativeTechnical

T-Mobile USADNSAD11-ARIN

ARINtechcontact@t-mobile.com+1-888-662-4662

12920 SE 38th Street · Bellevue · WA · 98027 · United States

Abuse

T-Mobile USABUSE4857-ARIN

abuse@t-mobile.com+1-888-662-4662

12920 SE 38th Street · Bellevue · WA · 98006 · United States

Registration and change events

2 events

Event	Time (UTC)	Actor
Last changed	11/18/2020, 17:32:25	Not provided by registry
Registration	9/18/2012, 19:32:10	Not provided by registry

Terms and remarks

Registry notices are shown verbatim so their authoritative meaning is not altered.

4 notices

Registration CommentsGeofeed https://raw.githubusercontent.com/tmobile/tmus-geofeed/main/tmus-geo-ip.txt

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Whois Inaccuracy ReportingIf you see inaccuracies in the results, please visit:

CHA.LA authoritative RDAP snapshotIANA Bootstrap only locates the responsible registration service. Data comes from the corresponding RIR or domain registry and is cached locally by query target.Authoritative source: ARIN · rdap.arin.net