When choosing an internet service provider (ISP) you want to make sure the company you go with can deliver on the speeds they promise and give you a connection you can rely on.
To determine the best, we reviewed the speed of connection in homes around Australia using real-world data and asked people to rate their satisfaction with their NBN provider.
Best NBN brand for 2025: Aussie Broadband
For the fifth year in a row, Aussie Broadband has won the title of Best Brand NBN provider. It's the only brand in our survey to earn very good results for overall customer satisfaction and satisfaction with NBN speeds.
Dodo and iPrimus are the equal second-best providers at 85%, followed by iiNet, Telstra and TPG which all share third place for Best Brand. Optus is last past the post but still earned a very good result with a Best Brand score of 80%.
To find out which specific services we recommend, click on the 'Recommended' box in the filters section of our broadband internet provider reviews.
Fastest NBN providers: Exetel and Superloop
Exetel and Superloop earned the equal fastest speed score in 2025.
Exetel and Superloop have the fastest NBN speeds of the ISPs in our survey, sharing equal first with a total speed score of 96% each. Both earned perfect download speed scores of 100% and excellent upload speed results as well.
Dodo and iPrimus shared a close second place (95%), also with perfect download speed results. However, their upload scores were ever so slightly lower which is why they just fell short of sharing the top spot with Exetel and Superloop. Telstra also earned a speed score of 95%.
Remaining results are TPG with 93%, iiNet and Optus with 92% and finally, Aussie Broadband with 91%. This is an interesting outcome for Aussie Broadband as the ISP was still able to clinch the Best Brand title despite having the lowest scoring speeds in our survey.
Most satisfied NBN customers: Aussie Broadband
Aussie Broadband has the most satisfied customers by quite a wide margin, according to our survey. Its NBN customer satisfaction score of 84% is significantly above the competition. This metric is what has helped it rise above the rest to take out the top spot five years in a row.
Dodo and iPrimus, iiNet and TPG tied for second with 76% followed by Telstra with 73% and Optus further down the line with a score of 69%.
NBN speed data vs perception
As with last year, there's a discrepancy between how satisfied customers are with their NBN speed and their ISP's NBN speed score as recorded by the ACCC.
| Brand | NBN speed score | NBN speed satisfaction |
| Aussie Broadband | 91% | 80% |
| Dodo & iPrimus | 95% | 74% |
| iiNet | 92% | 74% |
| Optus | 92% | 72% |
| Telstra | 95% | 73% |
| TPG | 93% | 72% |
We don't have data to explain this discrepancy between recorded speeds and customer satisfaction, but it's interesting to note nonetheless.
How we get our results
Our Best Brand NBN scores are made up of two evenly weighted figures: an overall speed score and an overall satisfaction score, both of which rely on volunteers. If we don't have enough data for either score for a specific provider, we can't give a Best Brand NBN score.
We do still include data for providers in instances where we only have one score – NBN speed or satisfaction. However, they can't be given a Best Brand ranking.
This year's examples include:
- Exetel – not enough NBN satisfaction data
- Superloop – not enough NBN satisfaction data
The overall NBN speed score is obtained by averaging out the publicly available speed monitoring data provided by the Australian Competition and Consumer Commission (ACCC) every three months.
We take the raw data and apply a scoring methodology based on how close a product's upload and download speeds come to its NBN wholesale speed tier.
We define NBN products as plans whose speed tier, NBN connection technology, and brand are identical – e.g. a Home Fast (100/40) plan from Aussie Broadband running on a fibre to the node (FTTN) connection.
If any product doesn't have enough volunteers providing data to allow for a useful comparison, we don't include it.
The overall satisfaction score is taken from our biennial internet provider satisfaction survey, the most recent of which we conducted in 2023. If we don't receive enough responses for a provider, they're left out of this scoring for the sake of accuracy.
Why we've partnered with WhistleOut
We've partnered with search engine WhistleOut to help you find and buy the right plan for you. The 'Search Providers' button above will take you to their site. While we make money if you buy through WhistleOut, this doesn't influence our rankings. 100% of the money we make goes straight back into our nonprofit mission.
Stock images: Getty, unless otherwise stated.
