On Tue, Sep 18, 2001 at 02:28:23PM -0500, Carl Wilhelm Soderstrom wrote: > the simple way to check if there's a DNS server at least listening; is to > telnet to port 53. That may work for DNS servers that are allowing zone transfers, but most of DNS is run using UDP. How do you telnet to a UDP port? You don't. You could use dig and specify the server like so: # dig @1.2.3.4 host A Nate