Slave/secondary DNS nameserver

Posted by user114671 on Server Fault See other posts from Server Fault or by user114671
Published on 2012-11-03T14:55:06Z Indexed on 2012/11/03 17:05 UTC
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dns

I'm learning about DNS and have a very basic, generic question about DNS but I can't find an answer anywhere.

I have DNS for a few domains set up as follows: - master records with DNS company A - slave records with DNS company B

Company A's nameservers are:

ns1.companyA.com.
ns2.companyA.com.
ns3.companyA.com.
ns4.companyA.com.
ns5.companyA.com.

and company B has three slaves:

ns6.companyB.com.
ns7.companyB.com.
ns8.companyB.com.

Everything works fine transferring the records between the nameservers and keeping them in sync.

But my question is: The registrar of my domain example.com allows me to choose 4 nameservers only. Do I just pick the first 4 for company A, or do I need to include 1 or more of company B's slave nameservers too?

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Slave/secondary DNS nameserver

dns

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