don't remember which ones tho

remember:

just because you are paranoid does not mean they are not out to get you

and

the paraniod who acts upon it rarely gets got

Just search for them using any search engine.

Problem solved!  And, of course, use a fake name.

Look, while it's rare that people get outed, caught, blackmailed, extorted, etc, I believe there is no such thing as being too paranoid in this hobby.  

A lot of things can go horribly wrong.  You should invest into precautions as much as you can until the point at which it becomes overwhelming and the net happiness you derive from the hobby is a poor ROI for your efforts.

You should be especially concerned if:
* you are wealthy
* you are married
* you are famous, or there is a chance you will become famous
* you hold a political office, or there is a chance you will hold a political office in the future
* you hold a security clearance, or there is a chance you will hold a security clearance in the future
* some combination of the above

Why not use a public computer such as a health club or library.  Cell phone sites are not porn sites so they shouldn't be blocked.

(was tough finding one, I'll tell ya).  The registration process is automated - all they ask for is a zip code (to assign appropriate area code - use yours, use the next town, hell use another state if you want) and a contact phone number.  For that I used the number of a local utility that I had memorized.

IMHO - you are not paranoid.  Don't use the work phone!!