+61AU
Australia number screening
The cleanest numbering rules in this batch - mobile is always 04 - paired with the messiest carrier picture, because porting here is total.
Mobile number format
Mobile numbers always begin 04 and run 10 digits nationally, e.g. 0412 345 678. Drop the leading 0 and you get +61 plus 9 digits, written 4xx xxx xxx. Numbers starting 02, 03, 07 or 08 are landline area codes, not mobiles.
Main carriers
- Telstra
- Optus
- Vodafone (TPG Telecom)
There are only three networks - Telstra, Optus and Vodafone - and a long list of MVNOs such as Boost, Kogan and Belong resell them. With full portability since 2001, no prefix inside the 04 range maps to a brand, and even a live lookup names the host network rather than the brand the customer signed with.
On the ground
Contract postpaid dominates and prepaid plays a supporting role, so numbers live long and aged Australian lists decay far more slowly than Southeast Asian ones. On the other side, unsolicited SMS sits under the Spam Act and the Do Not Call Register, which pushes practical work toward consented lists and in-platform messaging.
Screening guidance
Start with validity and line type to strip landlines and VoIP that slipped in. Then run device-side iOS detection: Australia's iOS share is among the highest anywhere, so that one layer splits a list by spending power. On social, lead with Facebook and Instagram, and use WhatsApp to locate migrant and cross-border segments rather than running it across the whole file.
Key platforms in Australia
Australia is not a WhatsApp country: everyday messaging still runs on SMS, iMessage and Facebook Messenger, while WhatsApp clusters around migrant and cross-border contacts. Vantage corresponds to the sizeable ASIC-regulated retail forex and CFD audience.
FAQ
How many digits is an Australian mobile number?
Ten digits nationally, always starting 04 - for example 0412 345 678. In international format you drop the leading 0, giving +61 plus nine digits. Numbers beginning 02, 03, 07 or 08 are landline area codes, so the first two digits already filter a list.
Can you tell the carrier from an Australian number?
No. Australia opened full portability in 2001, so no prefix inside the 04 range maps to a brand. On top of that, MVNOs such as Boost, Kogan and Belong resell Telstra, Optus and Vodafone, so even a live lookup returns the host network rather than the customer's brand.
Do Australians use WhatsApp much?
Not as a default. Local messaging still runs on SMS, iMessage and Facebook Messenger, and WhatsApp shows up mainly in migrant communities and cross-border contact. Running WhatsApp across an entire Australian file is poor value; use it to find people with overseas ties.
Start screening Australia numbers
Submit numbers for this market after signup, or integrate in bulk through the API.
Get started free