The Communications regulator says Personal Broadband UK, has won the auction for the spectrum band 1785 - 1805 MHz, which it says will increase competition in wireless markets.
ComReg has offered it a 15-year technology and service-neutral licence for €205,000 subject to conditions.
The auction was the first in a two-part process involving a joint approach to licensing with the UK regulator Ofcom.
Commissioner Mike Byrne said : ' This licence has the potential to introduce more competition in wireless markets in Ireland for the benefit of consumers.'
'ComReg will continue to work closely with Ofcom with the objective of introducing services to benefit businesses and consumers throughout the island of Ireland', he added.