I am searching for a lost Irish pen pal. Where can I post my ad to find him?

In the days when we had no Internet and we used a pen and paper to correspond, over 25 years ago, I had an Irish pen pal, Alan. I lived in Japan at the time and I visited him while he stayed in Germany and then visited his family in Kilmainham, Dublin. I think it was 1984 or 85. I lost my address book after I moved to the US and lost touch with him. Where in Ireland can I contact to find him or his family, perhaps by posting a personal ad? Alan and I are in our 40s and I am not sure if he often uses the Internet. And I don't know the school he went. I live in the US and don't know much about the resources in Ireland.
Additional Details
I don't like disclosing personal information here (this is the reason I deleted my first question). Alan's surname is Cleere. He lived in Kilmainham, Dublin, 25 years ago with his family. His father passed away several years after I visited them. Last time I contacted him, in late 1980', he was working at a travel agency, I think. Alan should be in his mid 40s now. I don't know if he still lives in Dublin. If any of you could look up a phone directory, etc., I would appreciate very much. I may contact the radio show or the newspaper y'all suggested. I have too little information about him and can't use any of the "friends" websites.