04 Numbers: Australian Mobile Phone Numbers
Australian mobile phone numbers start with 04 (and more recently 05) and have ten digits in total, such as 0400 123 456. Unlike landlines, mobile numbers are not tied to any city or state: an 04 number can be used anywhere in Australia.
What the 04 range covers
- ✓ 04xx xxx xxx: standard Australian mobile numbers
- ✓ 05xx xxx xxx: newer mobile range introduced as 04 numbers run out
- ✓ Mobiles work Australia-wide and keep their number when switching carriers
Number format
04xx xxx xxx, or +61 4xx xxx xxx when called from overseas
Because Australian mobile numbers can be ported between Telstra, Optus, Vodafone and dozens of smaller carriers, the original carrier prefix no longer reliably indicates who provides the service today, and a mobile number never tells you where the caller is located.
The majority of scam and spam calls reported in Australia now come from mobile numbers, including SIM-farm operations and spoofed numbers that look like ordinary mobiles. Common patterns include missed-call scams (one ring, then they hang up hoping you call back), delivery-text follow-ups, and fake bank security calls. If an unknown 04 number calls you, search it here before calling back: if others have been hit by the same number, their reports will warn you.
FAQs
Who called me from an 04 number?
An 04 number is an Australian mobile. It is not tied to a location, so it could be anyone from a courier to a scam caller. Search the number on Phone Lookup to see its spam score and what other people have reported.
Can I find out who owns an 04 mobile number?
Carrier records are private, but community lookup services like Phone Lookup show you what other people have experienced with the number: spam ratings, comments and how often it has been searched.
Why do scammers use 04 mobile numbers?
Mobiles are cheap to obtain in bulk via prepaid SIMs and look like ordinary personal numbers, so Australians are more likely to answer. Repeated one-ring missed calls from an unknown mobile are a classic callback scam pattern.
Recently searched 04 numbers
Numbers in this range that other Australians have checked recently: