Hi, Is there some relations between IP address and AS numbers? I want to know an IP belong to which AS and the IPs an AS have. Where can I find it? Thanks a lot. Challenge. _____________________________________________ IP¿¨¡¢ÉÏÍø¿¨ÈýÕÛÇÀ¹º http://shopping.263.net/category08.htm »¨580ÔªÂòÊýÂëÏà»ú£¬ËÍ100ÔªIP¿¨ http://shopping.263.net/category21.htm