Hopefully the back-end is not running Ruby. ;-)
The back-end is AWS Route53, it seems.
Well, we have already soft launched our own TerrificDNS Anycast and it has replaced the Route 53 solution. TerrificDNS platform is running on Redis + PowerDNS.
Terrific.
http://www.nameterrific.com
"502 Bad Gateway
nginx/1.2.7"