On Thu, 2003-07-03 at 19:43, Philip Stortz wrote: > does any one know of a free reverse dns server that's good?
You can set up your own free reverse DNS server. The trick is to get the respective netblock owners to delegate authority to your box ;-) > the dns servers my isp provides frequently fail to identify the owners > of ip# in my firewall log. while i do sometimes manually look them up > at arin.net etc., i'd really like to find a reverse dns server to > identify all those ip#, There is none. Arin only delegates in-addr.arpa zones to DNS hosters nominated by the respective netblock owner. Those DNS hosters may decide to sub-delegate (e.g. when a part of the netblock is re-leased to a customer), but ISP's don't sub-delegate all of their subscriber address space to one big free reverse DNS server. If a netblock owner chooses not to host reverse zones for their IP subnets, or to run dogdy DNS servers, or to host meaningless reverse entries (like your-own-ip-address.dial-up-suckers.isp.net), there is nothing you can do about it. Whois is your best bet. Cheers Steffen. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
