international number format

[Iain Dooley]

hi, anyone know of a complete list of valid international phone formats? i 
have lists of country codes and mobile prefixes on wikipedia, but for 
example, in australia:

country code: 61
mobile prefix: 4
valid phone number: 614xx xxx xxx

and in united kingdom:

country code: 44
mobile prefix: 77, 78, 79
valid phone number: 447[7|8|9]xx xxx xxx (is this correct??)

ie. is it always 2 digit country code followed by the mobile prefix 
followed by 8 digits?

cheers

iain