Maria Miller believes local authorities should be more transparent over their plans for the rollout of super-fast broadband.
In a letter to local councils seen by The Daily Telegraph, the Culture Secretary said residents and businesses should be informed of which areas are in line for a network upgrade.
As reported by the news provider, she said concerns have been raised about whether information on the areas which will, or will not, be covered by the current projects can be made available.
Some authorities have reportedly refused to publish details of their broadband rollout plans to date.
Ms Miller said revealing this information can help broadband providers and community groups "determine whether it is worth their while to develop local broadband projects to fill in gaps in coverage".
"It will also help clarify the position of those community broadband projects whose schemes are already planned in some detail," she wrote in the letter, adding "I am keen to see this information made available.”