Country Table Lookup

[George C]

Was wondering what logic can be used to lookup what country sms is being sent to..   Hope u can help me out..  its something that is done usually by providers.. and i need to implement this logic..   Wish to find a way to be able to tell from a International mobile number i.e +8684444xxxx that this number is a gsm in xyz country.   Then I will be able to add a charge my clients based on the numbers and country of destination since each country is different to send sms.. in terms of charges..   when I have picked the country code that sms has been sent to.. I can deduct then the sms credits from that account..   How or what algorith or logic can i use for this..   If all the country codes would be similar to +30 and +40, it would be easy. But some countries  have 3 digits, and for some, the first 2 digits are identical to a country with 2 digits. For instance: Spain - 34 U.S. Virgin Islands - 340 China - 86 Trinidad and Tobago - 868 St Kitts and Nevis - 869   hmmm  how or do u have any methods how I can approach this.??   much appreciate any info or docs. :)   /george