Trying to buy a name domain

[Astrael]

So, my name is Ryan Deming, and I'd like to purchase RyanDeming.com
However it would seem that someone in Montana currently owns the domain. I've tried emailing the listed admin email and after a month of no response I tried emailing again. After another month I decided to call the listed phone number, but the number was disconnected. Are there any other ways to find contact info or to contact the owner of a domain?

I'm not interested in an alternate, such as .net, .org, etc. I'm just trying to get the .com