Lyndon Nerenberg wrote : -> Is there a tool available that will take an IP address and return the -> ASN attached to that network? I've been in situations before where this -> information would be useful, but not having access to the BGP routing -> information I'm not sure how to do this? (I've looked around some -> "likely" web sites - such as Merit - but haven't found anything.) -> -> The pressing need is for the ASN associated with 198.161.92.0. This -> network is connected to I*star, but I can't tell which of I*star's -> three ASNs it's homed on. (And they aren't being responsive to queries.) -> % whois -h whois.ra.net 198.161.92.0 route: 198.161.92.0/24 descr: ESYS-NET origin: AS542 comm-list: CANET_INTERNAL advisory: AS690 1:3561(11) 2:3561(144) 3:3561(27) 4:3561(218) 5:3561(147) mnt-by: CANET-RC changed: config@canet.ca 960501 source: CANET -> --lyndon -> -> Cheers, Lyndon -- If you give up smoking, drinking and sex you may not actually live longer... ...It may just feel that way. Clement Freud