About Redwood City, CA (RWC1-San Francisco Bay Area)
Area Code,U.S. switching centers,NPA,NXX,Exchange,LATA,Telephone company,CLEC,CLLI Code, Number Portability,Vertical,Horizontal, Latitude Longitude, Mileage, NECA FCC Tariff #4, Voice Over IP, VOIP all in one package,Telecommunications Traffic, erlang, er