Ireland On-Line (IOL) is a former ISP in Ireland.
Ireland On-line was the first commercial internet service provider in the state. The company was formed in 1992 by Barry Flanagan, and was reported to have launched "Ireland's first mass-market Internet service" in January 1994.[1] In 1997, the company was bought by An Post for IR£2.5m. Two years later, it was sold to Esat Telecom Group plc for IR£ 115m. A year later, Esat Telecom was taken over by BT Group plc. In 2002 Esat was rebranded Esat BT.[2] In 2009 BT Ireland withdrew from retail telecommunications and transferred retail operations, along with IOL's former subscribers, to Vodafone Ireland.[3]