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North American Network Operators Group

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Re: Gothcas of changing the IP Address of an Authoritative DNS Server

  • From: Steven M. Bellovin
  • Date: Tue Dec 13 16:31:47 2005

In message <9828b780512131312q220a5ea6x97a6167e33c654a0@mail.gmail.com>, Sam Cr
ooks writes:
>
>I would think you would want to drop your DNS record TTLs for all
>domains being moved to something very low several days before the
>switch-over period.

More precisely, you want to change the TTL on the NS records, which are 
in the parent zone.  If you're keeping the name but changing the 
address, worry about the A records, too.

		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb






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