Editing Hosts File to Redirect URL to different IP Address
Note that zionica.com and www.zionica.com (or any other subdomain that comes before the word zionica) is a different domain, and the line as listed will not trap everything automatically by listing only the Second Level Domain.

www.zionica.com

www is a third-level domain, more commonly referred to as a 'sub-domain'.
zionica is the second-level domain. This word/placement on it's own generally does not have a more specific name.
com is a Top-Level Domain (TLD). Just like co, cc, org, net, ca, jp, uk, me, info, etc. (Everything except etc is a TLD.)

You can stuff multiple names into a single IP address line, so this is valid:

199.204.138.195 zionica.com www.zionica.com