Your public IP address is:

34.204.169.76

Block access to all IP's excluding your own

order deny,allow
deny from all
allow from 34.204.169.76

Temporary redirect all IP's excluding your own'

RewriteEngine On
RewriteBase /
RewriteCond %{REMOTE_HOST} !^34.204.169.76

RewriteRule .* http://www.google.com/ [R=302,L]