Area Code Book

Area Code Book is a user-friendly online tool designed to help you easily search and identify area codes across North America. Whether you're looking for a US or Canadian area code, or trying to match a location to a specific code, our platform makes it simple and fast.

We provide detailed information for each area code, including geographic coverage, time zones, and service status. This allows you to gain a clear understanding of how and where area codes are used, ensuring you always have the most accurate data.

Area Code Book is an essential resource for anyone needing to quickly reference area codes, whether for personal use, business communication, or simply out of curiosity.

Frequently Asked Questions

What is an area code?

An area code is a three-digit number that precedes a telephone number, designating a specific geographic region in North America. It helps route calls to the correct location.

How do I search for an area code?

You can search for an area code on our homepage by entering the code or the location (city/state/province) you want to look up.

Which countries are covered by Area Code Book?

Area Code Book covers the United States, Canada, and other regions within the North American Numbering Plan (NANP), including U.S. territories.

Can I search by location?

Yes, you can search by entering a location such as a city, state, or province to find its corresponding area code.

What information is provided for each area code?

For each area code, we provide details such as the geographic location, time zone, service status, type of code (e.g., geographic, non-geographic), and whether it's part of an overlay.

What is an overlay area code?

An overlay occurs when multiple area codes cover the same geographic area. This allows for additional phone numbers without changing existing numbers.

What is NPA?

NPA stands for Numbering Plan Area, which is another term for area code. It refers to the geographic region associated with the three-digit area code.

Can I find area codes for toll-free numbers?

Yes, Area Code Book also includes toll-free area codes like 800, 888, 877, 866, 855, 844, and 833, along with details about their usage.

How do I dial an area code from outside North America?

To dial a North American phone number from outside the region, use the international dialing code +1 followed by the area code and local phone number (e.g., +1 [area code] [phone number]).

What is the correct dialing format for phone numbers in the US and Canada?

When dialing within the US or Canada, use the format: 1 + area code + phone number. For local calls, you may only need to dial the seven-digit phone number, depending on the region.

Are area codes the same for mobile phones and landlines?

Yes, in the US, Canada, and other NANP regions, the same area codes are used for both mobile phones and landline phones.

Data Sources: NANPA Area Code, U.S. Area Code Map