• DNSStuff
  Useful tools to investigate DNS problems, DNS performance, WHOIS, PING, TRACEROUTE etc. Very extensive tests!
  in Internet > Domain administration with address dns ip ping tcp tools traceroute whois by 120 users
• Active Ports
  Freeware utility to monitor TCP/IP ports on NT/2000/XP
  SmartLine develops software solutions that ease the management and improve the security of Windows NT, Windows 2000, Windows XP and Windows Server 2003 networks.
  2000 2003 active device devicelock edition fl floppy lock manager millennium monitor ports registry remote server task windows
  in Computers > Windows with computers freeware ip monitor ports tcp utility windows
• IP Spotting
  How interesting is your IP address?
  A database of internet protocol addresses, scored based upon a number of silly tests
  address database fun internet protocol score silly top
  in Internet with address addresses domain domains fun funny ip lookup tcp
• MaxMind GeoLite Country
  Open Source IP Address to Country Database. If you want to find out where in the world an IP address is located. APIs for several programming languages.
  in Internet with address geography ip location lookup tcp by 3 users

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