Mobile phone numbers begin with 04, followed by eight digits. e.g. 04yy yxx xxx. The y-digit codes are allocated per network, although with the introduction of number portability, there is no longer a fixed relationship between the mobile phone number and the network it uses. New numbers are still allocated to phone companies in blocks, so a new number will generally still be on its "home" network.

Within Australia, mobile numbers must always be dialed with all 10 digits, no matter where they are being called from. 04 is a prefix, not an "area code", as such.

 

Area Code 0431 Details and Prefixes
General Details about Area Code 0431
Country Australia
Capital City Canberra
Time Zone UTC+08:00 - UTC+10:00
Phone Type Mobile

Area Code 0431 Prefixes

Prefix Mobile Phone Company
0431881 Optus
0431643 Optus
0431242 Optus
0431399 Optus
0431467 Optus
0431747 Optus
0431164 Optus
0431999 Optus
0431994 Optus
0431302 Optus
0431627 Optus
0431539 Optus
0431803 Optus
0431642 Optus
0431761 Optus
0431851 Optus
0431693 Optus
0431422 Optus
0431513 Optus
0431945 Optus
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