I was bouncing around the web tonight and discovered MyDNS which is a DNS server that serves records out of a MySQL or PostgreSQL database instead of with zone files like the common BIND server uses. Interesting idea, I wonder if it scales as well.
PowerDNS is another DNS server application that can read from a SQL database, amongst other formats.
The popular djbdns can be fed with a SQL database via an intermediary application called sql2tinydns this one also has a web interface for management which could be a handy thing.
If you’re looking for a free DNS service, maybe one that provides dynamic DNS or a secondary nameserver, you might want to take a look at FreeDNS by afraid.org. One twist with this service is they encourage sharing subdomains and hostnames on your domain with other users.
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