About TeraCodes
Public information delivered to you simply.
Our Mission
TeraCodes was created to present publicly available data like ZIP codes and telephone area codes in an accessible, uncluttered format. We believe that important reference information should be easy to find and understand.
Our goal is to provide you with access to the most accurate and up-to-date information that is publicly available. As we discover new data sources and better ways to present information, we continue to develop and improve the platform.
What We Offer
Area Codes
Comprehensive information on U.S. and Canadian telephone area codes, including coverage areas, timezones, and overlay codes.
Country Codes
International dialing codes for countries and territories worldwide, with regional breakdowns and dialing instructions.
ZIP Codes
Detailed demographics, population data, housing statistics, and economic information for U.S. ZIP code areas.
Telecoms
Directory of FCC-registered telecommunications companies, including carriers, VoIP providers, and service types.
Our Data Sources
We draw our information from authoritative public sources to ensure accuracy and reliability:
North American Numbering Plan Administration (NANPA)
Official source for area code assignments, NPA-NXX data, and numbering plan information for the United States, Canada, and other NANP countries.
U.S. Census Bureau
Population, demographic, housing, and economic data from multiple Census programs including:
- Decennial Census
- American Community Survey (ACS)
- Annual Survey of Manufacturers
- Commodity Flow Survey
Federal Communications Commission (FCC)
Telecommunications company registration data from FCC Form 499 filings.
International Telecommunication Union (ITU)
International country calling codes and telecommunications standards.
Our History
TeraCodes has been serving users since 2012, providing easy access to telephone and geographic reference data. What started as a simple area code lookup has grown into a comprehensive resource for telecommunications and demographic information.