You will need to set up an A-Record to white label your entire domain name (www.realgreatexmaple.com) to redirect to your reputation kahuna CRM login page.
Oftentimes, your domain registrar will need the IP address of the website you are redirecting to, in your case, reputaitondatabase.com.
The IP address for reputaitondatabase.com is: 220.127.116.11
White Label Overview
Setting Up Your Subdomain and White Label
Agency Twilio Setup
Agency Support Setup