DNS outages

ML ml at
Sun Nov 14 21:58:58 CST 2010

On 11/14/2010 10:20 PM, John Lightfoot wrote:
> My company uses for DNS hosting and we were hit by its troubles
> this weekend.  I know there are companies that offer backup DNS services,
> but those seem to be aimed at companies that host their own DNS, which we're
> not really interested in doing at this time.  Are there mainstream DNS
> hosting companies that allow customers to use a second company for their
> backup DNS?  Does allow this?
> -----Original Message-----
> From: Florian Weimer [mailto:fw at]
> Sent: Sunday, November 14, 2010 1:49 PM
> To: Brandon Kim
> Cc: nanog group
> Subject: Re: DNS outages
> * Brandon Kim:
>> Times like this, makes you curious what kind of infrastructure
>> has? How does one protect against DDOS?
> You can outsource your DNS, but you better retain a server locally on your
> network, so that you suffer less from that particular shared toothbrush.

 From the POV of someone who has never used an outsourced DNS service...

Is there a reason you couldn't run a hidden master or two that 
replicates to slaves at one or more outsourced DNS hosts?

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