While trying to understand my downtime with dns.he.net I began looking for other free DNS providers. One that ran across has a good feature set, comparable to the best. It is called  Sitelutions DNS .

Their service looks good, looks unlimited, & is most certainly free. I might just try out their service with just one domain, just for a while, to see how Sitelutions DNS  compares to Hurricane Electrics free DNS service.

Edit: looks like they have quite a few limits to their free service. The free DNS service limits can be found here.

Looks like I'll be staying with dns.he.net my DNS needs.