No need to limit yourself to US tld's, country ones for funny domains can be stable as well. My domain koffie.nu (coffee.now in Dutch), registered in '98, is still going strong. I just hope the rising sealevel won't wipe away the country any time soon.
With "stand alone" is meant a camara you can use without suplier software (at home or in the cloud).
I just want a camare that I can use with motion. (unify has local software, but still you need their software as far as I know)