Global Area Code List

A complete directory of telephone area codes for the US, Canada, and UK.

🔍

Try searching for (555) 123-4567...

Browse every active area code in our database, covering the United States, Canada, and United Kingdom. Click any state or region to explore its coverage details, or tap an area code to view location data, time zones, and carrier information.

D
1 state
Delaware 1 code
H
1 state
Hawaii 1 code
R
1 state

Frequently Asked Questions

Common questions about area codes in the North American Numbering Plan.

What is an area code? +
An area code is a three-digit number that identifies a specific geographic region within the North American Numbering Plan (NANP). It's the first three digits of a 10-digit phone number and helps route calls to the correct local exchange carrier.
How many area codes are there in the US? +
There are over 330 active area codes in the United States alone, with new ones being added regularly as demand grows. States like California and Texas have the most area codes due to their large populations and high demand for phone numbers.
Why do some states have more area codes than others? +
The number of area codes per state is determined by population density and the demand for phone numbers. Heavily populated states, or those with major metropolitan areas, need more area codes. As available numbers run out, new overlay codes are introduced.
What is an overlay area code? +
An overlay is a new area code that covers the same geographic region as an existing one. Unlike a split (which divides the region), overlays allow residents to keep their current numbers. The trade-off is that 10-digit dialing becomes mandatory for all local calls.
Can I tell where a call is from by the area code? +
Generally, yes — geographic area codes are tied to specific regions. However, with number portability and VoIP services, a caller may use a number with an area code from a different location. Our lookup tool can help identify the registered location of any area code.

Need to Look Up a Specific Number?

Use our intelligent phone lookup tool to get carrier info, spam risk assessment, and location data for any number.

Start Searching →