No it’s not an April’s fool prank, try to go to www.google.com.lb, it really works! And it looks like the domain has been activated since February 4th 2009, as per this lookup on AUB.edu.lb.
If you have experience in registering a domain name ending with “.lb” then you probably know that in order to register your domain you must issue several official documents including a trademark file and “Iza3a tijariyya”, then present them to the American University of Beirut which acts as the registrar for the .lb top level domain.
I’m curious to know who presented these papers on behalf of Google… is it a sign they will soon be opening an office in Lebanon? (2addamna CV??? :p )