Area Codes / Prefixes / Time Zones:

Basic Info
For area codes and prefixes, we have a new product, ACMaster which contains the Time Zone and whether it observes Daylight Savings Time for each area code and prefix (referred to in the industry as NPA / NXX).
The file includes the following:
- Telephone area code and prefix
- The 2-character state abbreviation
- The time zone that the area code / prefix belong to
- A Daylight Savings Time flag (Y/N) for whether that area (NPA / NXX) observes Daylight Savings Time or not.
- Note: we have many other fields of data available such as the Rate Center city (a cleaned up version which is far better than generic Telco data), Operating Company info, Wireless / Landline, etc. and can customize a file for you. Let us know your needs!
The price for this manually verified product is only $225 per year.
Go to our Download Page to try a demo of the data!
For detailed info, please review our PDF documentation file.
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