ISP & Telecom Directory · United States

TMUS Fiber LLC

TMUS Fiber LLC is an Interconnected Voip in United States, listed in the FCC register. The contact details below are reproduced from that register as of August 2026; verify against the live register before serving legal process.

TMUS Fiber LLC

Interconnected Voip

Also known as: T-Mobile

Agent for service of process: Corporation Services Company, 1090 Vermont Ave, Washington, DC, 20005
Agent phone / fax: (866) 403-5272
Agent email: [email protected]
Headquarters: 12920 SE 38th Street, Bellevue, WA, 98006
Customer inquiries: (800) 937-8997
Holding company: T MOBILE USA INC
States served (53): Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID: 838408
Last filing: 4/1/2026

Sending a lawful request to TMUS Fiber LLC

Serve subpoenas, court orders and preservation letters on the agent for service of process named below; registered-agent firms forward to the company's legal team. Requests from outside the United States go through the MLAT or CLOUD Act route. For the procedure and legal basis in United States, see the investigator guides; for platform and app data requests, the LERS portal guides.

More United States providers starting with T

All United States providers starting with T · United States directory · All countries

Source: FCC Form 499 Filer Database. Independent reference for study and investigative use; Ministry of Cyber Affairs is not a government body and does not represent TMUS Fiber LLC. Names and contact details are reproduced as published by the regulator.