If you are interested in finding telephone service companies and/or internet service providers in your area, there are various websites that provide this information. Choose an internet search engine (e.g. Google, Yahoo, etc. ) and type a search description such as "telephone companies in my area" or "internet providers in my area".
Utility Contact System Database
The CPUC also provides a list of all certificated telecommunications carriers by type, name, or utility identification number. If you do not know this information and are looking for carriers in your area, please consult your telephone directories under Telecommunications Carriers.