US Telecom, ISP & VoIP Provider Legal Contacts
Every interstate telecommunications carrier and interconnected VoIP provider in the United States must register with the FCC on Form 499 and name an agent for service of process in Washington, DC: the contact the company designated to the FCC. Under 47 U.S.C. 413 that agent is for proceedings before the FCC, and the FCC’s instructions describe it as the contact for Commission business, so it is not necessarily where a subpoena or court order should be sent. This directory lists that agent, with phone and email, for all 8,951 providers with a current filing (FCC data as of August 2026), together with each company’s legal and trade names, headquarters, customer-inquiries line and the states it serves.
Browse by company name
Providers are listed by legal name. Each page has its own search box that also matches trade names, agents, cities and states.
Serving process on a US provider
- The agent designated to the FCC is the company’s registered contact for FCC matters. Many providers appoint a registered-agent firm that forwards documents to the legal team. Before serving a subpoena or court order, check the provider’s own published law-enforcement or legal-process page, and ask its legal team which address it accepts.
- Pure broadband ISPs that provide no interstate telecom or VoIP service may not file Form 499 and will not appear here.
- Requests from outside the US for stored content go through the MLAT or CLOUD Act route; see our investigator guides.
About this data
Source: the FCC Form 499 Filer Database public dump, as of August 2026. Only filers whose most recent Form 499 was submitted in the current or previous year are included, which removes companies that have ceased operating or been absorbed. Registration data on Form 499-A is public; the financial data on the form is not and is not reproduced here. Verify the agent against the FCC’s live record before serving. For India, see the India ISP directory.