Area Code Time Zone Database

Includes Daylight Savings Info

Our Area Code Database is a telco data product which provides a list of all active area codes and prefixes (NPA/NXX)*. It includes highly accurate Time Zones and Daylight Saving Time information in an area code database.

*NPA/NXX - NPA is a telecom data code which stands for Numbering Plan Area. It is just the telephone area code. The NXX stands for Exchange or Central Office Code. It is often referred to as an area code prefix.
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Area Code Database

The benefits and usage of this telecom database file varies greatly by company and application. For instance, telemarketing companies use it to comply with the FTC’s designated call times. This telco data is great for telephony applications and for general telecom data verification. We believe you will find it to be the most accurate Area Code Database available. Learn more: View Area Code Data product documentation / Watch our Accuracy Matters video

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Related Links

Area Codes by ZIP Code
Area Code Data with Time Zones, Rate Center
Area Code Data with Time Zones, Rate Center, Operating Company