zap2it: now located at https://tvlistings.gracenote.com/grid-affiliates.html

And if you used zap2xml.pl, the fix is

sed -i 's/zap2it/gracenote/g' zap2xml.pl

(run this from the directory where zap2xml is located, or specify the full path)

You're welcome. Be sure to check your EPG sources in whatever software you use as you may have to deselect the labs.zap2it.com entry and select the labs.gracenote.com entry instead, or if they are in a list you can use sed to change them all at once.