1. In international direct telephone dialing, a code that consists of 1-, 2-, or 3-digit numbers in which the first digit designates the region and succeeding digits, if any, designate the country (click here for a list. ) 2. In international record carrier transmissions, a code consisting of 2- or 3-letter abbreviations of the country names, or 2- or 3-digit numbers that represent the country names, that follow the geographical place names. 3. In a URL or e-mail address, the two-letter abbreviation (subdomain suffix) used in lieu of ". Net," ". Org," or "gov. " to signify the country in which the web site originates. Note: Examples of country codes are ". Gb" for Great Britain, ". Jp" for Japan, and ". Us" for United States.