ISP & Telecom Directory · United States

Comporium, Inc.

Comporium, Inc. is an Incumbent LEC 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.

Ministry of Cyber Affairs is not Comporium, Inc.. We are an independent news site and this page only reproduces the public register, so for service, bills or payments contact the company directly. Is this your company? Request a correction.

Comporium, Inc.

Incumbent LEC

Also known as: Rock Hill Telephone Company, RHTC.net, RHTC Long Distance, Comporium Communications, Comporium.net

Agent for service of process: Sylvia Lesse, Communications Advisory Counsel, 5151 Wisconsin Avenue NW, Suite 311, Washington, DC, 20016
Agent phone / fax: (202) 333-5273 · fax (202) 333-5274
Agent email: [email protected]
Headquarters: PO Box 470, Rock Hill, SC, 29731
Customer inquiries: (803) 326-7255
Holding company: —
States served (1): South Carolina
FCC 499 Filer ID: 803649
Last filing: 4/1/2026

Sending a lawful request to Comporium, Inc.

The agent below is the contact the company designated to the FCC. Before serving a subpoena, court order or preservation letter, check the provider's own law-enforcement or legal-process page and confirm which address it accepts. 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 Comporium, Inc.. Names and contact details are reproduced as published by the regulator.