14 Apr
                
                    2004
                
            
            
                14 Apr
                
                '04
                
            
            
            
        
    
                1:59 p.m.
            
        I'm seeing the same thing: works from 80.*, doesn't work from 83.*. Note that www.mercer.com seems to suffer from a bad case of paranoia, they filter traceroute and ping, so probably a misconfigured firewall there. hk.yahoo.com traceroutes just fine from a 212.* address:
TCP port 80 can also be used to traceroute... hping is your friend. http://www.hping.org (or apt-get install hping2 on apt-friendly distributions) Rubens