Greetings, Don't mean to open up a can of worms. I know rfc952 was modified (1035) to allow first letter of hostname to be a digit and so cases like 3com.com are legal. But is hostname made of entirely digits legal (e.g. 123.org)? My understanding of rfc1035 says that it's not but I see instances in which hostname is made up entirely of digits! Thanks, Farid