Dns Resolver is used to queries DNS servers for host
information and programmatically query DNS servers for
information, without having to worry about complex
packet parsing. It easily returns information in a
humanly readable form. It allows you to
programmatically perform DNS record lookups.It can be
used from ASP.NET web pages, to windows forms, to web
services.
The Domain Name System or DNS is a system that stores
information about host names and domain names in a kind
of distributed database on networks, such as the
Internet. Most importantly, it provides an IP address
for each host name, and lists the mail exchange servers
accepting e-mail for each domain.

The DNS provides a vital service on the Internet,
because while computers and network hardware work with
IP addresses to perform tasks such as addressing and
routing, humans generally find it easier to work with
host names and domain names, for example in URLs and
e-mail addresses. The DNS therefore mediates between
the needs and preferences of wetware and of software.

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