Free Area Code Lookup
Quick lookup of Area Codes
Overview
Once I got a call from a client after hours the previous day, so we called them right at 9:00 a.m. Eastern the next day. The problem was that they lived in California and had a home office, so I woke them up at 6:00 in the morning!
That may have been the inspiriation that caused me to create the GreatData.com Area Code / Time Zone Master List. I keep a copy by my desk and tens of thousands have done the same. There's other great area code resources on this page. Check it out!
More Helpful Area Code Resources
A great free resource is Nanpa.com. They are the organization that assigns area codes and there's a lot of good free material such as area code maps, list of area codes that will be changed, etc.
If you need area code databases such as all of the area codes per ZIP Code, all of the area codes and prefixes with corresponding time zone, operating company or rate center info, go to here for U.S. Area Code Database Products and here for Canadian Area Code Database Products.