Edited sentence: -BBBBBB, where AA is the geographical code, BB the suscribers number and.Always after the Area Code comes a 4 (which lot's of time isn't mentioned), except in the case of mobile phones.Argentinean telephone numbers consists always of 10 digits, including the geographical area code.Calling a mobile phone inside the city, instead of dialing the Area Code, you add a 15 for any mobile number.Examples: 11-4123.4567 (Buenos Aires fix number); 291-512.3456 (Bahía Blanca handy number); 15-612-3456 (any mobile phone dialed from any city whose area code has only 3 digits).Mobile phones use the same area code, but the number begins not only with a 4 but also with a 3, 5 or 6.The Area Code can have between 2 and 4 digits (EG 11 for Buenos Aires, 341 for Rosario, 2627 for San Rafael), and the suscribers number will be of 6, 7 or 8 digits (6 for San Rafael, 7 for Rosario, 8 for Buenos Aires).They are mostly writen as AA.can be either A or B