I've seen a lot of praise for easyDNS, but I've never used them myself. They have failover DNS, which is interesting. http://support.easydns.com/Failoverfaq.php I guess you could technically use 2 (or more) different hosts for DNS, which would give you some redundancy, but I've never seen anyone do that.
I usually don't like to host DNS with the registrar because they tend to be kind of bad as far as flexibility. GoDaddy's DNS controls are pretty good, but I still tend to host my DNS elsewhere.
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I've seen a lot of praise for easyDNS, but I've never used them myself. They have failover DNS, which is interesting. http://support.easydns.com/Failoverfaq.php I guess you could technically use 2 (or more) different hosts for DNS, which would give you some redundancy, but I've never seen anyone do that.
I usually don't like to host DNS with the registrar because they tend to be kind of bad as far as flexibility. GoDaddy's DNS controls are pretty good, but I still tend to host my DNS elsewhere.