Cloudflare NS outage and having non Cloudflare NS3?

Question

Due to rising server load from DOS attacks I've decided to use Cloudflare, but I am aware their users suffered an hours outage in March because all Cloudflare Name Servers were "down".

I have my own NS, can I retain this as NS3 for the domain (for fallback) alongside Cloudflares "NS1 & NS2"?

What would the impact be?

I am aware Nameservers aren't selected in number order but I believe it is likely that Cloudflares commonly used NS in the client's locale are likely to be selected first - so only a small portion of traffic would use my NS3 (without the benefits of Cloudflare services). Is this correct or just wishfull thinking on my part?

Answer 1

Please do consider opening a support ticket for these kind of questions at CloudFlare directly.

You won't be able to leave additional name servers in place, as in ns3 and n4 -- in addition to the 2 provided CloudFlare name servers. To use our service you'd need to only have our 2 name servers in place.