I've found a few "questionable" phone numbers on my caller ID box and wanted to find out who they came from...

Armed with only a phone number, is there a (free) website where I can cross reference the number to a name/address ???

Is there also a way I can record, or find out all the numbers called from my telephone ???

(I'm doing a little P.I. work, and will post the results/outcome in the future)
For now, I prefer to keep my reasons "private" [:D]

[url]http://www.anywho.com/rl.html[/url]

This is the reverse lookup I use the most.

Like Defcon said, there are many sites that offer reverse lookup.  And if you don't get a "hit" with the first one, keep trying other sites.

edit:
LOL!  Ya beat me to it, Defcon.  

Try 5551212.com

Go to [url=www.google.com]Google[/url] and input the number with the dashes, i.e. 555-555-5555. It should give you a name and address.