MPs have criticised the broadband rollout in lacking details.
The government said that many of the maps released by the rollout lacked sufficient detail about the coverage and speeds that would be provided.
The committee of MPs also questioned the costs that would be involved.
A spokesman for the broadband rollout said: "It is... frustrating that the committee continues to try and pick holes in the programme."
"BT is delivering value for money and the National Audit Office acknowledged there are 'robust' processes in place to ensure that. As for maps, most councils have published coverage maps with our support. More detailed data will be released by them in due course once surveys have been completed and we know for sure that we are going to an area."
By 2015 the government will have distributed a total of £490m in grants to English local authorities and administrations in Scotland, Wales and Northern Ireland to improve rural broadband.
The goal is that by 2015, all UK premises will experience at least two megabit per second downloads and 90% of premises will have access to superfast downloads of at least 20Mbps.
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