
How international telephone codes were decided and what they are: history
Map of international dialing codes. Credit: Credit: Maximilian Dörrbecker, CC BY 2.0, via Wikimedia Commons. The international telephone prefix it is a code that must be added before a national telephone number to be able to make calls abroad: every country has one, for example Italian mobile numbers have the prefix +39 (or 0039), those of the USA (and Canada) ...








