Under previous arrangements registrations of numbers expired after eight years, meaning numbers had to be re-registered.

“This means that the more than 10 million numbers currently on the Register will never need re-registering,’ said ACMA Chairman, Chris Chapman.

“For anyone wanting to opt out of unsolicited telemarketing calls and marketing faxes long term, any new registrations will also be valid permanently.”

And, while the numbers on the register are now permanent, you can still check or remove numbers from the Register at any time.

According to ACMA research, the register is working, with nearly 90% of people on the register reported a material reduction in unsolicited marketing calls after registration.

Chapman said the register is not, however, designed to stop or reduce scam calls and he encouraged caution when receiving unsolicited calls.

Chapman notes that it is illegal for most unsolicited telemarketing calls or marketing faxes to be made to numbers on the register, but says that the vast majority of businesses that use this type of marketing do the right thing, checking their contact lists against the register.

He said that since the launch of the register, marketers have checked over 8.5 billion numbers against it.

Australian mobile and landline phone numbers used primarily for private or domestic purposes, as well as fax numbers, are eligible to be registered and registration is quick, free and easy. To register a number click here or call 1300 792 958.