Telephone Directories

Area/Calling  Codes
U.S. Area Code Update Database

Area Codes by City, State, Zip Code
Phone Number Location Search
International Calling Codes

White Pages-Individual
Ancestry.Com (U.S.)
AnyWho (U.S)
Switchboard (U.S.)
Infospace (U.S.)
People Finder (U.S.)
Partial Telephone Number Search (U.S.)

Phone Net UK (British Telecom) ||| Infospace (U.K)
Infospace (Canada)
Canada 411
Telestra (Australia)
White Pages (France)

Reverse Telephone & Address Search
Reverse Telephone and Address Search (InfoSpace)
Reverse Telephone (AnyWho)
Reverse Telephone (ABI)
(Canada) Reverse Telephone and Address Search (InfoSpace)

White Pages-Businesses
AnyWho (U.S.)
Switchboard-Business(U.S.)
American Directory Assistance (U.S.)
Infospace (U.S.)
    Businesses Near an Address
Canada 411

Toll-Free Directories
Anywho Toll-Free Directory
Internet 800/888 Directory
Canada Toll-Free Directory
University Phone Directories

Government  Directories
(U.S.) Federal Phone Directories
Links to web directories for various agencies and offices
411 for Government and Industry (Carroll Pub) |||

(Canada) Government Electronic Directory Services (GEDS)
"...provides an integrated directory of all federal public servants."