Now you can put our "prefix search box" on your website or the "signature area" of your email program! Go HERE for details.

This is a directory of U.S./Canada/Caribbean telephone prefixes and their locations. Each area code has its own search page.

This prefix locator service is compiled from available information. If you know of a prefix we do not have or you spot an error, let us know but don't get upset about it. We do the best we can.

This prefix list is updated on a regular basis. We know about ALL new area codes long before they are implemented. If you don't see the new code yet, go back to the old code for the prefix location.

Caveat: Although we have done our best to provide accurate information, errors can and will creep in. We will correct any and all errors that we find or are brought to our attention at the next update.