Need help for an example config file

[masckmaster2007]

Here are following dns domains that have A/NS records :

EUROPE:

eu-1.internet.dedyn.io
eu-2.internet.dedyn.io
eu-3.internet.dedyn.io

AMERICA:

us-1.internet.dedyn.io
us-2.internet.dedyn.io

ASIA (not tested):

as-1.internet.dedyn.io

I wanted to do this kind of stuff (like CDN) as a fun project and i may use it for my websites in the future.
(the goal is that it opens one of these websites according to location)