Six months after build preparation commenced for the majority of the city, there has been no date given for completion and residents are wondering when the city might be connected.

Under the NBN scheme, suburbs have to go through build preparation and build construction before residents are able to connect.

When the NBN was announced by the Labor government, Dubbo was scheduled to be one of the first cities to receive it and had it proceeded as initially planned, the rollout would have been underway, with the majority of the city due to receive NBN by mid-2015.

However the project was delayed when the Liberal-National Coalition came to power and work that had commenced in mid-2013 was placed on hold until its revival in July 2014.

A spokesperson for NBNCo said it was unable to provide the Daily Liberal with any idea on when build construction might commence in Dubbo or a date when the service may be switched on.

They did confirm that the service typically becomes available 12 months after the build construction phase begins but said there is no time frame for build preparation because of the varying challenges contractors face in different locations.

"Our goal is to provide access to fast broadband to all Australian homes and businesses by 2020 including residents in Dubbo," the spokesperson said.

"We'll update the community and online maps including timings for the Dubbo rollout as we get closer to the start of physical construction."

In response to questions about whether all of Dubbo would receive the faster Fibre to the Premises or the more basic Fibre to the Node connection, the response was ambiguous.

"As a taxpayer-funded organisation tasked with delivering broadband across the whole country we have to take a common sense approach to the way we build the network. Using a mix of technology we aim to provide download data rates of at least 25 Mbps [megabits per second] to all premises with the majority of premises in the fixed line footprint planned to have access to download data rates of at least 50 Mbps per second."

While 20,000 homes in Western Sydney will have the service switched on, parts of Dubbo are unable to access basic ADSL services and have been waiting for the NBN to alleviate their issues.

When work recommenced for 2700 houses in Eastridge in July 2014, Parkes MP Mark Coulton said the previous Labor government had frustrated residents by allowing the NBN to fall behind schedule.

"Over the years I have spoken to people and Eastridge is the worst area with town for ADSL availability and internet speeds so it's good that work is starting there," he said in July.

"From what I have been told, the remediation work will take a month or two, and then construction will begin. We expect that will be underway by September."

That would have had an estimated completion time of September 2015 but now the earliest residents can expect to access the service is 2016.

A recent ranking of internet speeds revealed Australia is ranked 44th in the world.