What dns services out there allow me to use my owned domain name?
E.g, if own mydomain.com then all requests to my 3rd level name access.mydomain.com are monitored if comcast changes my ip.
Not a free service that allows only there domain and you pick a 3rd level name on theirs. $25 a year or less.
Thanks for your question Rickeyjt.
I use DNSexit for registering all of my domain names. Once registered there, I can have as many 3rd level domain names as I want without paying anything extra. They also have a Dynamic DNS service but I don't know what the cost is.
As far as Comcast changing your IP, I have Comcast and they only change my IP about every couple of years or so. I think it only changes when they upgrade the node servers.