Hello World! The ubiquitous Hello World.. to announce something!
Seems like the longest single word domain name is named after a welsh town - http://llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.com/ This is a 58 letter domain! But this is not the longest place name in the world. That goes to one place in Thailand - 163 characters in length (I don’t want to write it here.. it will mess up my CSS