DOS Attacks and DNS: How to Stay Up If Your DNS Provider goes DOWN » blog.easydns.org – Happenings and observations:

On the DNS side of things there are a few steps you can take to either not go down, even if your DNS provider does, or to make any impact minimal.

easyRoute53: Nameserver Integration and DNS Management Layer for Route53:

So we’re happy to announce easyRoute53, which is now available under beta.

All service levels support easyRoute53, even if we are just going to act as your Registrar, with no DNS hosting component here (you can then use the DNS editor to manage your Route53 data).