someone to host my DNS?

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http://www.linuxquestions.org – I register a lot domains through a particular registrar. Their site lets me specify my nameservers, but doesn't appear to offer any additional DNS services which would let me create A, CNAME, or MX records. Does anyone know of a third party which I can specify as the primary nameservers for my domains which will let me create whatever DNS records I need? For instance, I could create an SPF record to make sure mail can be sent from google apps. Or I could point a subdomain at some other server. The reason I ask is because some of the hosting companies I use have ide (HowTos)