[IgorPartola]

I use dns.he.net for my DNS hosting. It's free up to 50 zones and has been rock solid. The other day I started having some trouble with accessing some of my domain names. Turned out that all of their DNS was down and was returning NXDOMAIN for pretty much any request, including their own domains. Oops. So I emailed their support (which is usually very quick to respond and is better than I have seen with lots of paid products). Well, it then occurred to me that I will not get a response since the MX records for my domain were also hosted with them. Double oops.

On the plus side, in the past 4 years that I've used them this was the very first issue, and they fixed it within a couple of hours.

Anyone have any good recommendations on cheap or free backup DNS hosting?

[nullrouted]

Use www.dnsmadeeasy.com and then dns.he.net as your secondary dns service or vice-versa. They will do transfers/updates from each other and work just fine.