Area Code 8700 – Adelaide
The phone area code for Adelaide is 8700 (international format +618700). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 8700
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Adelaide
Overview
The Australian telephone country code +61 is followed by the geographic area code 8700, which serves the city of Adelaide, the capital of South Australia. This code is part of the national numbering plan administered by the Australian Communications and Media Authority (ACMA) and is allocated to fixed-line services within the Adelaide metropolitan area. As a geographic code, 8700 identifies the caller's physical location for billing and emergency services purposes.
Geographic Coverage and Administration
The 8700 prefix covers the central business district and surrounding suburbs of Adelaide, including North Adelaide, Kensington, Norwood, and Unley. It is one of several prefixes (e.g., 7100, 7200, 7300, 8100, 8200, 8300) assigned to the Adelaide region under the broader 08 area code. The code is administered by the Australian Numbering Administration (ANA) and is allocated to licensed carriers such as Telstra, Optus, and Vodafone, as well as numerous smaller service providers.
Dialing Formats
For local callers within Australia, the number is dialed as a 10-digit national significant number: 08 8700 XXXX. The leading '0' is the trunk prefix, and '8' is the area code for South Australia and the Northern Territory. When calling from overseas, the format is +61 8 8700 XXXX — note that the trunk prefix '0' is omitted. For example, a local call to a number would be 08 8700 1234, while an international caller would dial +61 8 8700 1234.
Overlay and Number Portability
Adelaide does not currently have an overlay code; the 08 area code serves the entire state. However, local number portability (LNP) allows customers to retain their 8700 number when switching service providers, including moving from fixed-line to VoIP services. This means that a number with the 8700 prefix may not always be physically located in Adelaide, but it remains associated with the geographic region for regulatory purposes.
Caller Instructions
- Local callers: Dial the 10-digit number starting with 0 (e.g., 08 8700 1234).
- International callers: Dial your country's exit code, then 61 (Australia), then 8 8700 XXXX (omitting the leading 0).
- Emergency services: Always dial 000 (or 112 from mobiles) regardless of the prefix.
For businesses, having an 8700 number establishes a local presence in Adelaide, which can enhance trust with local customers. For individuals, it provides a reliable fixed-line connection with clear geographic identification.