Using crunch to create a word list containing all the mobile phone numbers in Australia

crunch 10 10 0123456789 -t 04%%%%%%%%

where:
"10 10" fixes the length to 10 digits
 "0123456789"  uses all these numbers in the % locations
"-t 04%%%%%%%%"  denotes the strings to contain 04XXXXXXXX

The same can be done with local phone numbers.
http://en.wikipedia.org/wiki/Telephone_numbers_in_Australia

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