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a company domain to your ISP - the primary server needs to stay in direct company
control - and use everyone else as secondary's from a primary company server on
a portable company assigned IP subnet, or better yet your own ASN too.

That way if you need to change ISP's due to a service outage, all you need to get
back on the air is to get the new ISP to announce your IP-block/ASN for a Co-Lo
machine until any circuits can be moved to the new provider.

Properly admined - it doesn't matter if Qwest wants to secondary your domain long
after you cease to use their services - their servers will just continue to update
off your primary server.

John