Original Message

EVERY website on the planet knows, or should know, what IP is accessing the site.  The ones that don't are not websites you would willingly visit.  Websites are only allowed to know your general area.  Courts are (or should be) the only ones to eventually find out your exact name and address via a lawsuit.   

"Virtually every website on the World Wide Web (Web) will track and record IP addresses as visitors click through the site's pages. Two primary reasons for this are security and site improvement. Visitors are tracked by a website even when they don't register or log in"