O2

Telefónica Ireland was a broadband and telecommunications provider in Ireland that traded under the O2 brand. O2 Ireland was previously called Esat Digifone when it was owned by Esat Telecommunications from 1997 to 2006.

O2 Ireland became a subsidiary of Telefónica in 2006 after its parent company O2 in the United Kingdom was purchased. In June 2013, Hutchison Whampoa announced it would acquire the Irish arm of O2 for €780m. O2 was merged into Hutchison Whampoa’s subsidiary Three Ireland in March 2015.

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