On Thu, 7 Sep 2000, Sean Reifschneider wrote: > it. If not, you can try "whois <ipaddr with last octet 0 at whois.arin.net" > to look up who owns the block (usually). Thanks for the replies, nslookup and host will do fine. But I think I'm stuck on the syntax of whois above: do you mean $ whois xxx.xxx.xxx.0 at whois.arin.net or something else? Glenn