I was doing a flight from EHAM to CYYZ, and as I was nearing the eastern Irish coast, I was told I was to Contact Dublin. However when I clicked on the headphone icon, it only listed smaller UNICOM fields. I was asked three times to contact Dublin, but I could not because I never got close enough to get it listed in the radio options.
Any thoughts on this? I would have for it to look like I am ignoring ATC.