Leosghost - 3:42 pm on Sep 2, 2009 (gmt 0)

you always have at least two nameservers ..somehost.ns1 and somehost.ns2 ..these are just to point incoming requests to your host server ( where your site lives) ..1000 other sites is way too many on the same server ..change hosts ..then change the name servers ( to do this you go to your registrars domain admin panel ) to the ones that your new host tells you ..

"maintenance" doesnt take two days ..

And dont host with your registrar ..no matter how they package it ..

you may also want to read "Dynamic Load-Balancing DNS: dlbDNS" put that into your favourite search engine with the quotes ..and use the link which mentions Linux ..read the article ..It will help you understand better what you may have been ? thinking of in your OP