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 <[email protected]> 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. > > _______________________________________________ > dns-operations mailing list > [email protected] > https://lists.dns-oarc.net/mailman/listinfo/dns-operations > dns-jobs mailing list > https://lists.dns-oarc.net/mailman/listinfo/dns-jobs Its part of an anycasting network (CDN). This /24 is advertised all around the world. -- ~ Andrew "lathama" Latham [email protected] http://lathama.net ~ _______________________________________________ dns-operations mailing list [email protected] https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs
