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ISP & Telecom Directory · United States

Sigma Broadband Co

Sigma Broadband Co 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.

Sigma Broadband Co

Interconnected Voip
Agent for service of process
Mary Phillips, Registered Agents Inc., 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(202) 403-0599
Headquarters
1155 Mount Vernon Hwy NE, Suite 800, Atlanta, GA, 30338
Customer inquiries
(912) 378-1709
Holding company
—
States served (59)
Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Johnston Atoll, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Midway Atoll, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
836537
Last filing
4/1/2025

Sending a lawful request to Sigma Broadband Co

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.

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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 Sigma Broadband Co. Names and contact details are reproduced as published by the regulator.