Milovana.com

You need look no further than here, my friend.

Cruel Natalie is a participant on this forum who provides the services you desire. She's smokin' hot (I gotta say I've not corresponded with her nor used her services.)

http://dominantmistressphonesex.com/

Also, one of the advertisers here:
http://cockcontrol.com/cock_control_essays.html

Have fun,

micheleFFS

Depends on if you are looking for online only or for something that leads to real life. I love meeting people through fetlife, personally.