Just sign up with omnis hosting, and not sure what is the omnis dns domain nameserver to use? Its easy, just use the following omnis domain nameservers:
Omnis Primary DNS nameserver: ns1.omnis.com
IP: 216.239.128.2
Omnis Secondary DNS nameserver: ns2.omnis.com
IP: 216.239.128.3
Once you changed your domain nameserver to point to omnis nameserver, does allow up to 48 hours to allow domain propagation to complete. Once its completed, your domain will be pointed to omnis hosting, and your website can be hosted with omnis hosting.
Go to Omnis.com