Multiple Tools
http://www.mxtoolbox.com
Reverse-lookup
http://www.zoneedit.com/lookup.html
POW·ER·CRAM NOUN, \ˈPAU̇(-Ə)R\ˈKRAM\ – CONSISE, USEFUL INFORMATION ABOUT COMPUTERS, NETWORKS AND CLOUD.
Multiple Tools
http://www.mxtoolbox.com
Reverse-lookup
http://www.zoneedit.com/lookup.html