As of last month the Representative Church Body Library (RCBL), in collaboration with the National Archives of Ireland (NAI), has released an online master list of Church of Ireland parish registers. The online list, which include information relating to baptisms, marriages and burials, are considered to be definitive as far as registers within the Republic of Ireland are concerned. It will be regularly maintained and updated by the RCBL so that those pursuing historical as well as ancestoral research will have permanent access to the lists.
Further details about the project and the meticulous work done by the RCBL and NAI can be read in this link: http://ireland.anglican.org/about/128
The online list is available here: http://ireland.anglican.org/about/168