The FCC Home Page says the agency's mission is to "encourage competition in all communications markets and to protect the public interest." A friend of mine used to work for the FCC, and that seems pretty much in accord with what she used to do.
The FCC Web site posts information about the agency, upcoming auctions of frequency licenses, FCC forms, consumer information, etc., plus a copy of the Telecommunications Act of 1996 and related materials (www.fcc.gov). The site also provides information on enforcement actions (www.fcc.gov/eb/tcd/working.html).
FCC decisions, reports, public notices and other documents are published in the Federal Communications Commission Reports (1934-1965), the Federal Communications Commission Reports (1966-1986) and the FCC Record (1987-Present).
FCC decisions back to 1996 are searchable free through the FCC's EDOCS. FCC decisions are searchable back to 1934 on Lexis (TELECOM;FCC) and Westlaw (FCOM-FCC).
Citations from the FCC Record can be pulled off Lexis using the following format: xx FCC Rcd xxxx.
You can find subsequent decisions and cases citing a particular FCC decision using KeyCite on Westlaw.
Telecommunication companies are required to file a Form 499-A that provides contact information, the names of corporate officers, the agent for service of process and the states where the company operates. You can look up this information using the Form 499 Filer Search.
To find more FCC-related materials, see Georgetown University Law Library's bibliography of Communications Law guide.
Docketed proceedings and rulemakings: You can search for proceedings and filings from 1992 to the present using the FCC's Electronic Comment Filing System. You can track filings in FCC proceedings with TheDCoffice.com (subscription).
Licenses and Licensing: To file for a license or to search for a license, use the FCC's Universal Licensing System (ULS).
Telephone Consumer Protection Act of 1991: In addition to the general sources, FCC Orders relating to the TCPA are available on TCPALaw.com.