Chances are if you are on a 12Mbps or 25Mbps fixed-line NBN plan, even during busy hours, you’ll be getting over 100% of the advertised speed.
Thanks to the National Broadband Network (NBN) overprovisioning its plans by between 10% and 15%, it is very likely that customers on NBN’s lowest two fixed-line speed tiers — 12Mbps and 25Mbps — are getting speeds faster than what is on the label. According to the latest Measuring Broadband Australia report released by the Australian Competition and Consumer Commission (ACCC), the average speed was 101.2% of the labelled speed across 5,142 tests on 12Mbps lines, and 101.4% of the so-called 25Mbps label across almost 20,000 tests. «Prior to this change, an NBN100 service would have been provisioned at slightly above 100Mbps plan speed; after protocol overhead, the highest speed test result which we could have measured might have been around 94Mbps,» the report said. «After the change, the same service might have been provisioned at above 100Mbps plan speed, meaning that even after protocol overheads we might still measure speeds around or slightly above 100Mbps. The increase in CVC has meant that there is sufficient capacity for RSPs to deliver speeds that are very close to the maximum set download speed.» However, as the speeds increased, the percentages dropped. For 50Mbps, it dropped to 95.2% on average and went down to 94.5% in busy hours, and for 100Mbps the drops were more severe,95% overall and 94.
