nslookup node18.linux.class. nslookup 192.168.5.38
dig desktop18.linux.class. dig mx desktop18.linux.class. dig txt desktop18.linux.class. dig -x 128.6.238.19 dig txt engsoft.rutgers.edu. @128.6.224.114
host 128.6.238.19 host -v 128.6.238.19 host -t mx ceramics.rutgers.edu. host -t txt ceramics.rutgers.edu. host -v -t txt ceramics.rutgers.edu. 128.6.216.19 host -a ceramics.rutgers.edu