Three Ireland (Hutchison) Limited (Three) Registration information Date of registration 01 Sep, 2015 Date last updated 18 May, 2026 Contact information Principal Address 28 - 29 Sir John Rogerson's Quay, Dublin 2, Dublin, Dublin 2, Dublin Country Ireland Contact phone number 083 333 3333 Main activities of the organisation Telecommunications Responsible person Name Sinead O'Donnell Email sinead.odonnell@three.ie Phone Number 083 CRO Information CRO 316982 Company Registration Name N/A