Australian Phone Number Format: Complete Guide With Examples (+61)

Getting the Australian phone number format wrong, even by one digit or a misplaced zero, can break calls, bounce SMS messages, and cause duplicate records in your CRM.

Whether you are a business calling clients in Sydney, a sales team storing contacts, or an individual dialing from the US or UK, this guide covers everything you need: number structure, area codes, all number types, dialing steps, common mistakes, and the best times to call.

Understanding the Australian phone number format

Every Australian phone number is built from four key components. Understanding each one helps you dial correctly, store numbers accurately in your CRM, and avoid failed calls when routing through VoIP systems.

Australian phone number format: +61 X XXXX XXXX or +61 4XX XXX XXX

• +61, Australia’s country code (required only for international calls)
• X represents the area code for landlines (e.g. 2 for NSW, 3 for VIC, 7 for QLD, 8 for WA/SA/NT)
• 4XX represents the mobile prefix, always starting with 04
• The remaining digits are the subscriber number

Example: +61 2 8765 4321 (Sydney landline)

1. Country Code: +61

Australia’s international country code is +61. Any caller outside Australia must dial this before the rest of the number. When saving an Australian number in your phone or CRM for international use, always store it with +61 at the start.

2. Trunk Prefix: 0

Within Australia, callers dial a leading 0 before the area code. This is the trunk prefix — it tells the domestic telephone network you are calling within Australia. This 0 is always dropped when dialing internationally.

For example, the domestic Sydney number (02) 8765 4321 becomes +61 2 8765 4321 internationally.

3. Area Code (State Code)

The area code is a single digit (after removing the trunk prefix 0) that identifies the geographic region of a landline. Mobile numbers use the 04 prefix instead of an area code. Australia has four geographic area codes for landline routing:

4. Subscriber Number

The subscriber number is the 8-digit local number assigned to an individual, business, or virtual line. This part stays the same whether you’re dialing domestically or internationally, only the prefix changes.

10-digit rule: All Australian phone numbers are exactly 10 digits when dialed domestically. If the number you have is shorter or longer than 10 digits, it is likely formatted incorrectly or missing a prefix.

How to dial an Australian number?

Dialing Australian phone numbers correctly is essential for successful calls and SMS messages, both domestically and internationally. This guide shows you the proper formats and step-by-step instructions.

1. Dialing Within Australia

To call within Australia, follow the given steps:

Landlines

1. Dial the area code for the city or region:

• 02 → Sydney
• 03 → Melbourne
• 07 → Brisbane
• 08 → Perth

2. Enter the local 8-digit number.

Example: To call Sydney landline: 1234 5678 → Dial 02 1234 5678.

Mobile Numbers

1. Dial 04 as the mobile prefix.
2. Enter the remaining 8 digits.

Example: To call mobile: 0412 345 678 → Dial 04 1234 5678.

Tips for Domestic Dialing

• Always include the area code, even for local calls.
• Mobile numbers always start with 04.

2. Dialing From Outside Australia

When calling from another country, you must use your country’s international exit code and Australia’s country code (61). Always omit the leading 0 from the area code or mobile prefix.

Landlines

1. Dial your international exit code (e.g., 011 USA, 0011 New Zealand).
2. Dial Australia’s country code: 61.
3. Omit the leading 0 from the area code.
4. Enter the 8-digit local number.

Example: To call Sydney landline: 02 1234 5678 from the USA → Dial 011 61 2 1234 5678 or +61 2 1234 5678.

Mobile Numbers

1. Dial your international exit code.
2. Dial Australia’s country code: 61.
3. Omit the leading 0 from the mobile prefix 04.
4. Enter the remaining 8 digits.

Example: Call mobile 0412 345 678 from overseas → Dial 011 61 412 345 678 or +61 412 345 678.

Tips for International Dialing

• Using the + sign before the country code is standard and works from most countries and mobile phones.
• Always remove the leading 0 from area codes or mobile prefixes; otherwise, the call may fail.
• For toll-free numbers (1300/1800), check whether international calls are allowed—they often require a different prefix.

Quick Reference

How many area codes are there in Australia?

Area codes in Australia are primarily for landline phone numbers and are assigned based on the region or city. Australia has 19 area codes in total, covering different regions as part of its telephone numbering system.

In Australia, the same area codes are also assigned to two or more cities. The zero is only used for making local calls, such as within Australia. If you are calling from outside Australia, there is no need to add a zero. 

Here are some of the popular states or regions of Australia, along with their area codes: 

Australia phone number examples of major cities

If you are planning to call Australia, then here’s a simple guide on how to dial Australian landline and mobile phone numbers, with examples from major cities.

Mobile numbers in Australia

Australian mobile numbers always start with 04 and have 8 more digits when dialed within Australia. If you’re calling from another country, just replace the 0 with +61.

Landline numbers in Australia

Australian landline numbers start with a city’s area code followed by an 8-digit phone number when dialed within Australia. If you’re calling from overseas, remove the 0 and add +61 Australia country code before the number.

Related Article 👉: How to get US numbers in Australia: A Complete Guide

Best time to call Australia

Australia has a large area of land that spans multiple time zones, affecting mobile network connectivity. So, connecting with Australian contacts is necessary for business communication, as it helps increase the chances of closing deals and receiving incoming calls.

From the US

The best time for making phone calls to Australia from the US is between 3 PM and 7 AM (US time), which will correspondingly be 7 AM to 11 PM in Australia. 

From the UK

The ideal time to make business calls from the UK to Australia is between 8 AM and 11 AM (UK time), which in Australia will be 5 AM  to 8 PM. 

Check out 👉: UK Phone Number Format: Types, Country Code & Examples

Common mistakes when dialing Australian numbers

When calling Australia, it’s easy to make formatting errors that prevent your call from connecting. Below are the most common mistakes that should be avoided while dialing Australian business phone numbers: 

• When using both +61 and 0 together (e.g., +61 03…), remove the 0 when dialing internationally, such as +61 3 1234 5678 (where 3 is the area code for Melbourne).
• Forgetting to remove 0 in the international format because the trunk prefix is only for making domestic calls. Keeping it will cause call failures. 
• The Australian phone number format mixes landline and mobile prefixes, with different codes: landlines have area codes, while mobile numbers start with 04 prefixes. 
• Entering incorrect area codes for major Australian cities. Each city/state has a unique code (e.g., Sydney 02, Perth 08). Wrong codes may misroute calls.

Check out 👉: Best Call Center Software in Australia

Get an Australian Virtual Phone Number with KrispCall

If your business needs a local Australian phone number — whether for a Sydney sales team or for a Melbourne support desk, KrispCall lets you set one up in minutes. With KrispCall, you get a real Australian number (with the correct area code) that you can use from anywhere in the world, on any device.

It offers advanced features like call recording, call forwarding, auto-attendant, and more to ensure seamless telephony for your business. 

More than 9,000 companies worldwide use KrispCall to manage their business calls, CRM integrations, and team communications with Australian numbers starting from just $4/month.