Area Code 233 – Gosford
The phone area code for Gosford is 233 (international format +61233). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 233
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Gosford
Geographic Coverage and Administrative Jurisdiction
The Australian country code +61, when followed by the geographic area code 233, routes calls to the Central Coast region of New South Wales, with Gosford as the principal city. This numbering area encompasses the former Gosford City Council area, including suburbs such as Erina, Terrigal, Woy Woy, and Umina Beach. The region is part of the Greater Sydney metropolitan area's northern fringe, situated approximately 76 kilometers north of the Sydney central business district. The 233 prefix is allocated under the Australian Communications and Media Authority (ACMA) numbering plan as a geographic service, meaning the number is tied to a specific physical location, historically for fixed-line PSTN services.
Dialing Formats and Caller Instructions
For local callers within Australia, the number is dialed as a full national significant number: 02 233x xxxx (where 'x' represents the subscriber's unique digits). The leading '0' is the trunk prefix used for domestic calls. For international callers, the format is +61 2 233x xxxx (or 0061 2 233x xxxx from many countries). Note that the trunk prefix '0' is omitted when dialing from abroad. The area code 233 is part of the larger '02' geographic numbering region that covers New South Wales and the Australian Capital Territory. However, 233 specifically identifies the Gosford exchange area. In this region, there are no overlay codes; the area code remains 02, and local calls within the Central Coast do not require the area code if dialing a number with the same 02 prefix, but for clarity and due to mobile number portability, it is recommended to always dial the full national number.
Numbering Plan and Technical Considerations
Geographic numbers in Australia are 10 digits long, including the leading '0' trunk prefix. The '2' after the trunk prefix is the first digit of the area code, and '233' is the specific destination code for Gosford. These numbers are primarily used for fixed-line services, including PSTN and VoIP services that are tied to a physical address. While number portability allows customers to retain their 233 number when moving to a different service provider, the number remains associated with the Gosford geographic area for routing purposes. Calls to 233 numbers are typically charged at standard fixed-line rates, depending on the caller's plan. For businesses, having a Gosford number can establish a local presence, which is beneficial for targeting customers in the Central Coast region.