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EX-21.1 4 tmus12312023ex211.htm TMUS EXHIBIT 21.1 T-Mobile US, Inc - Subsidiaries of Registrant.

EXHIBIT 21.1
Subsidiaries of Registrant

The following is a list of subsidiaries of T-Mobile US, Inc. as of December 31, 2023. Certain subsidiaries were omitted which, considered in the aggregate, would not constitute a significant subsidiary.

NameState of Incorporation
American Telecasting of Seattle, LLCDelaware
APC Realty and Equipment Company, LLCDelaware
Assurance Wireless of South Carolina, LLCDelaware
Assurance Wireless USA, L.P.Delaware
ATI Sub, LLCDelaware
Clearwire Communications LLCDelaware
Clearwire International, LLCWashington
Clearwire Legacy LLCDelaware
Clearwire Spectrum Holdings LLCNevada
Clearwire Spectrum Holdings II LLCNevada
Clearwire Spectrum Holdings III LLCNevada
Connect CCC, LLCDelaware
Finco Depositor I LLCDelaware
Finco Depositor II LLCDelaware
Finco Depositor III LLCDelaware
Finco Depositor IV LLCDelaware
Finco Owner Trust IIDelaware
Finco Owner Trust IIIDelaware
Finco Owner Trust IVDelaware
Finco Owner Trust VDelaware
Finco Owner Trust VIDelaware
Finco Owner Trust VIIDelaware
Finco Owner Trust VIIIDelaware
Finco Owner Trust IXDelaware
Finco Owner Trust XDelaware
Fixed Wireless Holdings, LLCDelaware
IBSV LLCDelaware
MetroPCS California, LLCDelaware
MetroPCS Florida, LLCDelaware
MetroPCS Georgia, LLCDelaware
MetroPCS Massachusetts, LLCDelaware
MetroPCS Michigan, LLCDelaware
MetroPCS Nevada, LLCDelaware
MetroPCS New York, LLCDelaware
MetroPCS Pennsylvania, LLCDelaware
MetroPCS Texas, LLCDelaware
Nextel South Corp.Georgia
Nextel Systems, LLCDelaware
Nextel West Corp.Delaware


NSAC, LLCDelaware
Octopus Interactive Inc.Delaware
Play Octopus LLCDelaware
PRWireless PR, LLCDelaware
PushSpring, LLCDelaware
Secure Federal Operations LLCDelaware
Slingshot Merger Sub 1 Inc.Maine
Slingshot Merger Sub 2 Inc.Delaware
Sprint Capital CorporationDelaware
Sprint Communications LLCDelaware
Sprint LLCDelaware
Sprint Intermediate HoldCo LLCDelaware
Sprint Intermediate HoldCo II LLCDelaware
Sprint Intermediate HoldCo III LLCDelaware
Sprint Solutions LLCDelaware
Sprint Spectrum Co LLCDelaware
Sprint Spectrum Co II LLCDelaware
Sprint Spectrum Co III LLCDelaware
Sprint Spectrum Depositor LLCDelaware
Sprint Spectrum Depositor II LLCDelaware
Sprint Spectrum Depositor III LLCDelaware
Sprint Spectrum LLCDelaware
Sprint Spectrum License Holder LLCDelaware
Sprint Spectrum License Holder II LLCDelaware
Sprint Spectrum License Holder III LLCDelaware
Sprint Spectrum PledgeCo LLCDelaware
Sprint Spectrum PledgeCo II LLCDelaware
Sprint Spectrum PledgeCo III LLCDelaware
Sprint Spectrum Realty Company, LLCDelaware
SprintCom LLCKansas
STC Five LLCDelaware
STC Four LLCDelaware
STC One LLCDelaware
STC Six CompanyDelaware
STC Three LLCDelaware
STC Two LLCDelaware
TDI Acquisition Sub, LLCDelaware
T-Mobile Airtime Funding LLCDelaware
T-Mobile Central LLCDelaware
T-Mobile Financial LLCDelaware
T-Mobile Global Care CorporationDelaware
T-Mobile Handset Funding LLCDelaware
T-Mobile Innovations LLCDelaware
T-Mobile Leasing LLCDelaware
T-Mobile License LLCDelaware


T-Mobile Northeast LLCDelaware
T-Mobile Puerto Rico Holdings LLCDelaware
T-Mobile Puerto Rico LLCDelaware
T-Mobile Reserved Subsidiary I LLCDelaware
T-Mobile Reserved Subsidiary II LLCDelaware
T-Mobile Resources LLCDelaware
T-Mobile South LLCDelaware
T-Mobile US Trust 2022-1Delaware
T-Mobile US Trust 2023-1Delaware
T-Mobile USA FoundationWashington
T-Mobile USA Tower LLCDelaware
T-Mobile USA, Inc.Delaware
T-Mobile Ventures LLCDelaware
T-Mobile West LLCDelaware
T-Mobile West Tower LLCDelaware
TMUS Assurance CorporationHawaii
TMUS International LLCDelaware
TMUS International Argentina S.R.L.Argentina
TMUS International Belgium B.V.Belgium
TMUS International Germany GmbHGermany
TMUS International Japan CorporationJapan
TMUS International Netherlands B.V.Netherlands
TMUS International Services Singapore Pte. Ltd.Singapore
TMUS International Spain, S.L.Spain
TVN Ventures LLCDelaware
VMU GP, LLCDelaware
WBSY Licensing, LLCDelaware