eir Ireland | 32,951 followers on LinkedIn. We are the principal provider of fixed-line and mobile telecommunications services in Ireland. | eir is the principal provider of fixed-line and mobile telecommunications services in Ireland with approximately 2 million customers. We have the most extensive telecommunications network in Ireland both in terms of capacity and geographic reach. The Group provides a comprehensive range of advanced voice, data, broadband and TV services to the residential, small business, enterprise and government markets. eir has built and continues to expand Ireland's largest fibre-to-the-home network, and best available 5G network.