Go ahead!  Type in an IP number...it will see who it belongs to!  Very interesting if you like to hack into Top-Secret Government Security Files.  Here are some IP numbers for you to look up and discover who owns them:

209.10.73.190
209.10.73.191
206.251.29.10
209.10.73.152
204.212.128.15
207.36.78.96
212.97.38.200