Because of the distributed idea of our system, the IP address your site uses to make outbound connections will vary from the IP the domain sets out to, and thus inbound traffic courses through.
External connections made by shared sites will show up as from either 185.151.28.62, 185.151.28.63, 185.151.30.175 or 185.151.30.176
If you have a Scheduled Tasks/Cron Job that requires outer connections, these will show up from 185.151.28.61 or 185.151.30.174
In any case, the above addresses are subject to change. So if possible, we'd prescribe whitelisting the IP range 185.151.28.0/22.
