The Australian Competition and Consumer Commission's latest quarterly Wholesale Market Indicators Report, released on Thursday, said the share of 25Mbps services fell from 18.1% to 15.5%.

In a statement, the ACCC said it was aware "that access seekers shifted a large number of wholesale services from the 25Mbps tier to the 12Mbps tier during the quarter, following changes to NBN wholesale pricing".

"Under NBN Co’s previous wholesale pricing offers, some service providers were using 25Mbps bundled wholesale services to supply 12Mbps plans to some of their retail customers."

Telstra continues to dominate the market for wholesale buyers of NBN services, accounting for 47.8% of all services, while Optus (15.5%) and TPG (21.9%) remained stable.

Smaller wholesale access seekers - who buy wholesale NBN services and supply them to individuals or businesses - increased their share from 7.3% to 7.5%.

The report showed that 6.6 million residential services were connected to the NBN, with 400,000 services having been activated in the final quarter of 2019.

Use of wholesale bandwidth, also known as Connectivity Virtual Circuit, has gone up by 6.5% from 1.80Mbps to 1.92Mbps when averaged across users.

Wholesale access seekers rose by one, to 10, who were connected to all 121 points of interconnect compared to the previous quarter. And 11 access seeker groups were connected to 116 PoIs, up from 108 three months ago.

“Our NBN wholesale market indicators reports continue to show a steady increase in access seekers directly connecting to the NBN, which means more competition in the retail market and more choice for Australian broadband consumers,” ACCC chair Rod Sims said.

“The rise in bandwidth per user is also positive, as it should be resulting in a better experience for broadband consumers.”