The ISP Column| www.potaroo.net
The Internet’s Domain Name System (DNS) is a remarkably simple system. You send queries into this system via a call to your local host’s name resolution library, and you get back answers. If you peek into the DNS system you’ll see exactly the same simplicity: The DNS resolver that receives your query may not know the answer, so it, in turn, will send queries deeper into the system and collects the answers. This query/response process is the same, applied recursively. Simple.| blabs
A zone digest is a cryptographic digest, or hash, of the data in a DNS zone which is embedded in the zone data itself as a ZONEMD resource record. It is computed upon publishing the zone, and it ca...| jpmens.net