Area Code 390 – Melbourne
The phone area code for Melbourne is 390 (international format +61390). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 390
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Melbourne
Overview of Area Code 390
Area code 390 is a geographic numbering allocation within the Australian telecommunications numbering plan, specifically serving the Melbourne metropolitan region in the state of Victoria. It falls under the broader 03 National Destination Code (NDC), which encompasses Victoria and parts of New South Wales (including the Riverina region). The 390 prefix is one of several central office codes assigned to the Melbourne central business district and its immediate surrounding suburbs, reflecting the city's role as Australia's second-largest urban centre and a major financial and cultural hub.
Technical Formatting and Dialing Procedures
In the international E.164 format, a Melbourne number with the 390 prefix is written as +61 3 390 XXXX XXXX, where the country code is +61, the NDC is 3, and the subscriber number is a total of 9 digits starting with 390. When dialing domestically from within Australia, callers must use the trunk prefix 0 followed by the NDC and subscriber number: (03) 390X XXXX. For example, a local call to a Melbourne business would be dialed as 03 390X XXXX, while an international caller would dial +61 3 390X XXXX.
It is important to note that the 390 prefix is not a separate area code but rather a central office code within the 03 NDC. This means that all numbers beginning with 03, including 390, share the same geographic rating and are subject to the same local call charging zones. Since the 1990s, Australia has implemented number portability, allowing subscribers to retain their 390 numbers when moving to other service providers, including VoIP operators, but the number remains geographically tied to the Melbourne area for routing and emergency services purposes.
Geographic Coverage and Administrative Jurisdiction
The 390 prefix is allocated to the Melbourne central business district and adjacent inner-city areas, including postcodes such as 3000, 3004, and 3006. This region is the seat of the Victorian state government and hosts major corporate headquarters, financial institutions, and cultural landmarks. The prefix is administered by the Australian Communications and Media Authority (ACMA), which oversees the national numbering plan, and is assigned to various carriers and service providers that operate within the Melbourne exchange areas.
Caller Instructions and Overlay Considerations
For local callers within Melbourne, dialing the 10-digit national number (including the leading 0) is mandatory, even for calls within the same exchange. There are no overlay codes in the 03 region, meaning that 03 is the sole geographic area code for Victoria; however, the introduction of additional digits has been managed through the expansion of the subscriber number length rather than overlays. International callers should replace the leading 0 with the +61 country code and omit any spaces or parentheses. When calling from a mobile phone, the same international format applies, and callers should be aware that charges may vary depending on their service provider's roaming or international calling rates.
In summary, area code 390 is a vital component of Melbourne's telecommunications infrastructure, ensuring reliable and geographically accurate routing for both voice and data services. Understanding its structure and dialing procedures is essential for businesses and individuals communicating with the Melbourne region.