> > Go to http://www.arin.net and enter the IP address. In the case > of 61.43.153.30, follow the link to the APNIC which is responsible > for this pool. You'll get there the info you seek. there is an enhanced whois command that will do this automatically. I don't know if its in any RH/CentOS repositories (it probably should be, hint hint!), I've built mine from source and drop it into /usr/local/bin ... here's the authors site, the info on it is skimpy, but it works great. http://www.linux.it/~md/software/ $ whois --version Version 4.7.17. Report bugs to <md+whois at linux.it>. $ whois 61.43.153.30 % [whois.apnic.net node-1] % Whois data copyright terms http://www.apnic.net/db/dbcopyright.html inetnum: 61.32.0.0 - 61.43.255.255 netname: BORANET-1 descr: DACOM Corp. descr: Facility-based Telecommunication Service Provider descr: providing Internet leased-ine, on-line service, BLL etc. country: KR ...