Oh... You really need to double check and make sure, Jack. As you probably know, Country Codes can be 1, 2, or 3 digits long... what you might not know (depending on what you're doing) is that International calls can also have a "city" code of 0 to 4 digits. Unless your lookup tables are spot on can you start looking for perfect matches starting at the 7th digit and working your way back, you can have a hell of a mess on your hands. And, don't forget that calls to Canada, Guam, Marianas, Puerto Rico, and other US Territories etc, are all under the North American Numbering Plan Association (NANPA) control and can all be reached with 1+NPA+NXX dialing.