Phone Number Evolution: Australia's 8-Digit Switch To 10

when did australian phone numbers change to 8 digits

In the early 1990s, Australian local phone numbers transitioned from six or seven digits to eight digits. This change was implemented gradually, with the specific year varying between 1994 and 1998 depending on the region. The shift to eight-digit numbers was necessitated by the increasing demand for telephone services and the depletion of available phone numbers in certain areas like Sydney and southeast Queensland. The new system included eight-digit local numbers preceded by a single-digit area code, resulting in a total of nine digits for national significant numbers.

Characteristics Values
Year of change Between 1994 and 1998, depending on the region.
Previous system Area code + 6-digit local phone numbers
New system Area code + 8-digit local phone numbers
Reasons for change Population expansion and increased demand for new numbers due to the onset of telecommunications competition and new services.
Regulating authority Australian Communications and Media Authority (ACMA), delegated by the Department of Infrastructure, Transport, Regional Development, Communications and the Arts.
Current characteristics All local phone numbers within the four geographical areas have eight digits, consisting of a four-digit exchange code and a four-digit local line number.
International code +61

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The transition to 8-digit numbers happened between 1994 and 1998

The transition to 8-digit phone numbers in Australia occurred between 1994 and 1998, with the change taking place at different times depending on the region. This update was implemented to address the shortage of available phone numbers in certain areas, such as Sydney and southeast Queensland, due to population growth and the emergence of new telecommunications services.

Prior to this transition, Australian phone numbers followed various formats, including alphanumeric assignments, six-digit numbers, and seven-digit numbers. The alphanumeric system, where letters were assigned numerical values (e.g., A=1, B=2, etc.), was gradually phased out, and by the 1990s, all phone numbers had been converted to seven-digit numerical formats.

The introduction of 8-digit local numbers was announced by the telecommunications adviser and regulator, Austel, in 1992. This change was intended to provide more flexibility and accommodate the increasing demand for telephone services.

During the transition period, some areas made the change earlier than others. For instance, Melbourne adopted 8-digit numbers as early as 1995, while other parts of the country may have experienced the change a year or two later.

With the implementation of 8-digit local numbers, Australia adopted a standardised format for landline numbers. Each of the four geographical areas in the country utilised an eight-digit local line number, typically consisting of a four-digit exchange code and a four-digit local line number. This eight-digit number was then preceded by a single-digit area code to form the complete nine-digit national significant number.

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Melbourne's new 8-digit numbers starting with '8'

Australia's transition to eight-digit phone numbers occurred in the 1990s, with Melbourne adopting this change in 1995. This shift was implemented by the Australian Communications and Media Authority (ACMA) under the Telecommunications Numbering Plan 2025.

Prior to this change, Melbourne's phone numbers varied, with some areas having six-digit numbers as late as the early to mid-1980s, while others transitioned to seven-digit numbers in the same decade.

The introduction of eight-digit numbers starting with '8' in Melbourne was met with some confusion. The Australian Communications Authority (ACA) reminded callers that these numbers were valid and being used in the same areas as the familiar '9' numbers. It was crucial for callers not to replace the '8' with a '9' or insert an extra '9', as this would result in a wrong number.

This change was necessary due to the depletion of spare blocks of '9' numbers reserved for specific parts of Melbourne. The transition to eight-digit numbers, including those starting with '8', allowed for future expansion with other leading digits.

Businesses needed to adapt to the new eight-digit numbers by reprogramming telephone systems, updating stationery and advertising, and modifying customer databases. Additionally, callers from country areas and interstate needed to ensure their telephone systems could dial eight-digit numbers when contacting Melbourne.

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1300 numbers are 'Local Rate' and not 'Local' numbers

In Australia, the transition from 6-digit local phone numbers to 8-digit local phone numbers occurred in the early 1990s, with specific years varying by region. For instance, the change took place in 1995 in Melbourne, while in North Queensland, it happened earlier in the decade. By the 1990s, all local phone numbers had been converted to 8-digit numbers.

Now, regarding 1300 numbers:

1300 numbers are referred to as "Local Rate Numbers" and not "Local numbers." This distinction is important because, despite being promoted as "local call rate" calls, they are not necessarily charged at the same rate as a local call. While callers dialling a 1300 number from any landline in Australia are charged the cost of a local call, the rates for calls made from mobile phones are typically higher and determined by the mobile phone company. Additionally, for individuals using VoIP services with all local and national calls free, calls to 1300 numbers may incur higher charges than a standard local call fee.

The cost structure of 1300 numbers makes them attractive to businesses aiming to expand their customer base beyond their local area, as they enable callers from outside the firm's local region to connect at a local call rate. This helps the business project a professional image and broadens its appeal. Furthermore, 1300 numbers offer flexibility in terms of customisation, with features like advanced call routing options and fully customised audio greetings and hold music.

Compared to 1800 numbers, 1300 numbers are more cost-effective for small to medium-sized enterprises. With 1300 numbers, the call rates are shared between the account holder and the caller, reducing the financial burden on the business. On the other hand, 1800 numbers are toll-free, meaning the account holder bears the full cost of the call, making them more suitable for large corporations or government organisations with higher call volumes and budgets.

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Premium rate services have the prefix 190x

Australian phone numbers changed to an 8-digit system between 1994 and 1998, depending on the area. For instance, the change occurred in 1995 in Melbourne, and in 1996 in North Queensland. Prior to this, Australian phone numbers followed an alphanumeric system, which was eventually replaced by 7-digit numbers in the 1960s.

In Australia, premium-rate telephone numbers generally begin with the prefix 19, with premium-rate voice services using the prefix 190x. The initial prefix was 1900, which remains the most common, and 1901 and 1902 have since been allocated. The 1901 prefix is reserved for "restricted services", which can include services of a sexual nature, and requires the user to register with the provider. The prefix 1906 is reserved for premium-rate paging services. Numbers beginning with 19 are generally used for premium-rate SMS services on mobile phones. These were originally trialled using the 188 prefix. Before the introduction of 8-digit local numbers, the prefix was 0055. 190 numbers incur a rate charged by the provider, either per minute (up to $5.50) or a fixed rate per call (up to $38.50).

Telstra owns all the allocations of these numbers and has developed a Code of Practice for its '190' (voice premium rate numbers) 'InfoCall' service providers. The previous determination controlling Premium Rate services was called the Telecommunications Service Provider (Mobile Premium Services) Determination 2005 (No.1), which was revoked and replaced by the Communications Alliance 2009 Mobile Premium Services Code on 1 July 2009. The new Code is compulsory for all Premium 19sms Providers.

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Australia's international country code is 61

Australia's transition to 8-digit phone numbers occurred in the 1990s, with the exact timing depending on the specific location. This change aligned with the introduction of the current 8-digit local numbering plan, which included the availability of 13 numbers.

In the context of international calling, Australia's country code is 61. When calling Australia from overseas, the complete international number, including the country code, needs to be dialled. For example, to represent the Australian phone number 02 1234 5678 in international format, it would be written as +61 2 1234-5678. The symbol '+' on digital devices automatically instructs the local network to dial an international number.

Within Australia, mobile phone numbers typically begin with 04, which includes the Australian national trunk code 0 and the mobile indicator 4. This is usually written as 04XX XXX XXX within Australia. However, when providing an Australian mobile number to an international audience, it is formatted as +61 4XX XXX XXX, incorporating the international country code.

The Australian Communications and Media Authority (ACMA) is responsible for defining and administering telephone numbers in the country, operating under the delegation of the Department of Infrastructure, Transport, Regional Development, Communications and the Arts. This authority is established through the Telecommunications Numbering Plan 2025, enacted under subsection 455(1) of the Telecommunications Act 1997.

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Frequently asked questions

Australian phone numbers changed to 8 digits between 1994 and 1998, depending on the region.

Sydney and south-east Queensland were running out of available phone numbers due to population expansion and the onset of telecommunications competition and new services.

Before the change, Australian phone numbers had area codes and 6 or 7 digits.

Australian landline numbers have a single-digit area code followed by an local eight-digit number, a total of nine digits. Mobile phone numbers begin with a 0 and have eight digits.

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