Telecoms company eir has said "unprecedented and widespread levels of damage" caused to its infrastructure by Storm Ophelia has left more than 11,000 customers without broadband, phone, and mobile services.
There are currently 90 of eir's mobile sites off air, with the worst affected areas in the Southwest, West and Midlands.
In a statement the company said the damage extended to poles, cables and mast infrastructure.
"We anticipate that the network damage will extend as the storm tracks across the country," it said.
It expects the number of affected customers to rise and warned repairs will be extensive and may take some time.
