[dns-operations] using different DNS providers together

[王正]

Good point is: it’s hard to make the dns server down

 Yes, diversity of DNS service provider enhances the security and stability.

Bad point is: you have to keep the data be consistent by hand without some automated tools (do we need one for this?) . Oh, you have to do it four times!!!.  The resolver may has to ask again to the authoritative server for the glue record which was not put in the additional section since the udp buffer is full.

 Whether DNS message has space for the glue records depends on the length of the domain,  and note that DNS message can accommodate 13 root nameservers and 13 glue records.

From:dns-operations-bounces at lists.dns-oarc.net [mailto:dns-operations-bounces at lists.dns-oarc.net] On Behalf Of Feng He
Sent: Tuesday, November 06, 2012 10:13 AM
To: DNS Operations List
Subject: [dns-operations] using different DNS providers together

 

Hello,

One of our customers has been using 4 different providers for his domain DNS:

   Domain servers in listed order:
      NS1.CLOUDWEBDNS.COM
      NS2.CLOUDWEBDNS.COM
      F1G1NS1.DNSPOD.NET
      F1G1NS2.DNSPOD.NET
      ELLE.NS.CLOUDFLARE.COM
      NORM.NS.CLOUDFLARE.COM
      NS3.CLOUDWEBDNS.COM
      NS4.CLOUDWEBDNS.COM
      NS43.DOMAINCONTROL.COM
      NS44.DOMAINCONTROL.COM


It inclouds godaddy, cloudflare, dnsbed and dnspod.
Does this have any hidden problem for resolving?

Thanks.



--


王正
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政务和公益机构域名注册管理中心

电 话:(010)-52035185
邮 箱:wangzheng at conac.cn
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