Get to know Three

Ireland’s largest telecommunications provider

About Three

Three is Ireland’s largest mobile telecommunications provider with 46.5% market share with over 4.5 million customers (as of March 2024).

At Three we strive to provide our customers with a better-connected life through meaningful products, best in class service and a connected network experience.

Our network is built for data; with over 92% 5G coverage and 99% 4G coverage.

Three has over 1,300 employees throughout Ireland, with our head office in Dublin, our Customer Experience Centre in Limerick where our award-winning team supports over 1.7 million customers every year, and more than 60 retail stores nationwide.

Three has to date invested over €2 billion in building our business in Ireland. This includes a €900 million investment in upgrading and expanding our network and IT infrastructure, delivering a cutting-edge experience for both our customers and our employees.

Annually, Three continues to invest over €100 million into our network to ensure we continue to deliver the best experience and service for our customers.

At Three Ireland we support greater workplace gender equality in Ireland and we are committed to advancing and improving opportunities for all women in the workplace. In our Gender Pay Gap Report, we set out our gender pay gap statistics for Ireland in 2023, explain the reasons for our gaps and set out what measures we are taking to reduce them.


Our Parent Company

CK Hutchison

Three is owned by renowned multinational technology innovator CK Hutchison Holdings (CK Hutchison). Its diverse businesses employ approximately 300,000 people in over 50 countries worldwide. CK Hutchison has four core businesses - ports and related services, retail, infrastructure and telecommunications.



Code of Practice

Here you'll find general information about us, the services we offer and how to get in touch with us. In this code of practice we tell you about your rights as a mobile customer as well as your responsibilities when joining us. And we explain our commitment to you as a customer.

Corporate Responsibility

At Three, corporate responsibility is about showing a strong and visible commitment to the communities in which we work across Ireland – maximising the benefits that we as a mobile operator can bring to communities. 

Three Media Centre

Visit our Media Centre to find a library of press releases and associated content.

Company name

Three Ireland (Hutchison) Limited

Company Number


Place of Registration


Registered Address

28/29 Sir John Rogerson's Quay, Dublin 2, Ireland


Phone: +353-1-5426300 Fax: +353-1-5426301

VAT Number