Area Code 8920 – Perth
The phone area code for Perth is 8920 (international format +618920). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 8920
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Perth
Overview of Area Code 8920
Area code 8920 is a geographic numbering allocation within the Australian telecommunications numbering plan, specifically serving the Perth metropolitan region in Western Australia. As part of the larger 08 National Destination Code (NDC) that covers Western Australia, the 8920 prefix is assigned to fixed-line PSTN and VoIP services operating within the Perth central business district and its immediate surrounding suburbs. The prefix is administered under the Australian Communications and Media Authority (ACMA) numbering framework, which ensures that geographic numbers are tied to a specific physical location for regulatory and emergency services purposes.
Geographic Coverage and Administrative Jurisdiction
The 8920 area code falls within the Perth Central Office Code (COC) range, which includes the state capital and key commercial districts such as Perth CBD, Northbridge, East Perth, and West Perth. It also extends to nearby inner-city areas like Subiaco and Leederville. This allocation is managed by the ACMA and is used by multiple carriers, including Telstra, Optus, and various VoIP providers, who assign numbers from this range to residential and business customers.
Dialing Formats and Caller Instructions
For local callers within Australia, the number must be dialed in its full national format: 08 8920 XXXX. The leading '0' is the trunk prefix used for domestic calls. For international callers, the number must be dialed as +61 8 8920 XXXX, omitting the leading zero. When dialing from a mobile phone within Australia, it is also necessary to include the full national number, as mobile networks do not recognize abbreviated local formats.
For example, a Perth business number might be +61 8 8920 1234. If you are calling from overseas, you would dial your international exit code (e.g., 011 from the US, 00 from most European countries) followed by 61, then 8, then the eight-digit subscriber number. If you are within Australia but outside the 08 region, you must dial 08 8920 1234.
Overlay Considerations and Number Portability
Perth does not currently have an overlay area code; the 08 NDC serves the entire state of Western Australia, including Perth and regional areas. However, due to the growth of VoIP and mobile services, geographic numbers like 8920 are no longer strictly tied to a physical wireline connection. Local Number Portability (LNP) allows customers to retain their 8920 number when switching service providers, even if the underlying technology changes from PSTN to VoIP. This means that a number with the 8920 prefix may be served by a VoIP gateway located anywhere, but it remains associated with the Perth geographic area for rating and emergency call routing.
Practical Usage and Cost Implications
For callers, calls to 8920 numbers are typically included in standard local call plans or bundled packages offered by Australian carriers. For businesses, having a Perth geographic number establishes a local presence, which can be important for customer trust and local search engine optimization. When calling from a mobile phone, standard mobile rates may apply, but many plans include unlimited national calls. International callers should be aware that charges vary by carrier, but using a VoIP service or international calling card can reduce costs.