The IPv6 Reverse DNS Zone Builder for BIND 8 & 9 is a quick and easy way of creating BIND 8, and BIND 9 named.conf configuration entries, along with creating a zone file with the correct syntax for domain name mapping to IPv6 addresses.
For example map:
The DNS Black & White list check tests IPv4, IPv6, or Fully Qualified Domain Name addresses against the most common publicly-avaliable DNS Black and White lists.
Web dig is a flexible web based tool for interrogating DNS name servers. This system performs DNS lookups and displays the answers that are returned from the queried name server(s). DNS administrators use Web dig to troubleshoot DNS problems because of its flexibility, ease of use and clarity of output.