Postal Code Companion
Canadian postal code, area code database tool
Canadian postal code, area code database tool
Zip code, area code database utility
North American area codes NPA/NXX database.
United States ZIP Codes Database Subscription
Lookup IP address to IDD code and area code
United States ZIP Codes Database Subscription
United States ZIP Codes Database Subscription
Area Code Lookup Tool - Area Codes Directory
Area Code Lookup - Info On Every Area Code
Lookup IP address to area code and weather