Consolidated Communications has resolved an hours-long Internet service interruption affecting customers Monday in southwestern New Hampshire, a spokeswoman for the Mattoon, Ill.-based company said.

Service was restored shortly after 7 p.m. Monday, said Shannon Sullivan in an email Tuesday morning. On Monday night, she said some customers were beginning to regain service as of 5:30 p.m.

She declined to specify how many customers were affected and said she did not have information about which specific municipalities they're in. She said that the outage was caused by a routing issue and that it was confined to southwestern New Hampshire.

Mia Summerson can be reached at 352-1234, extension 1435, or Follow her on Twitter @MiaSummerson