[dns-operations] Cloudflare's DNS

[Andrew Latham]

Its part of an anycasting network.  This /24 is advertised all around the world.

On Sat, Jul 28, 2012 at 11:32 AM, 风河 <mail at nsbeta.info> wrote:
> Just curious why cloudflare has that many DNS servers?
> abby.ns.cloudflare.com
> alex.ns.cloudflare.com
> amy.ns.cloudflare.com
> andy.ns.cloudflare.com
> anna.ns.cloudflare.com
-- snip --
> woz.ns.cloudflare.com
> zara.ns.cloudflare.com
> zoe.ns.cloudflare.com
>
> And the IP addresses for those NS are in the same networks (maybe two /24
> networks).
> $ cat cfdns.txt|while read LINE;do dig +short $LINE;done|sort -u
> 173.245.58.100
> 173.245.58.101
-- snip --
> 173.245.59.149
> 173.245.59.150
> 173.245.59.189
> 173.245.59.4
>
> Have they been using these many servers to improve the capibility of
> anti-DDoS?
> Thanks.
>
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Its part of an anycasting network (CDN).  This /24 is advertised all
around the world.

-- 
~ Andrew "lathama" Latham lathama at gmail.com http://lathama.net ~