How many ASs are out there?

Hi, Can anyone tell me how many AS are as October of 1998. I know there were around 700 registered ASs in the Internet at the beginning of 1994. [pag 178 of Huitema-93] Is there a web page with that Information? Thanks, Alejandro [Huitema-93] Huitema, Christian “Routing in the Internet”, Prentice Hall, 1993, ISBN 0-13-132192-7