They're expecting service to be restored at 10:30.
Vodafone are expecting broadband outages to affect customers in Offaly for another 4 hours.
The issue is affecting Tullamore and the surrounding area, beginning around 6 o'clock this evening.
They're asking people not to adjust their modem's and await updates on the situation that are being sent via text or on their social channels.
The provider is apologising for the inconvenience caused.