Major disruptions and outages for Eircom, eMobile and Meteor customers
Eircom are advising customers of a major outage across the country.
The issue is effecting mobile and landline services while customers with ISDN lines are also unable to make calls.
In a tweet, Dublin Fire Brigade warn that using landlines to contact emergency services may be difficult.
Calls from eMobile or Meteor to the tech support number will not connect and users will receive a message stating that.
Eircom have released a statement on the issue asking users to report bugs on their system.
"To our customers, We have been advised of a major issue affecting mobile and landline services within out network.
"Customers with ISDN lines seem to be effected whereby they cannot make calls.
"Calls from eMobile or Meteor network to 1890 260 260, Broadband Tech Support team or to 1800 numbers will receive a message saying we cannot connect your call.
"We are working to resolve this issue as soon as we can and will keep you updated here.
"This issue has also affected calls in to our customer care centres."
The company is customers experience issues to log in and report any faults here or to contact their Webchat team.