Whois-RWS

Network Resources
AWSEMAIL-Z-2 (NET-54-240-64-0-1) 54.240.64.0 - 54.240.127.255
AWSEMAIL (NET-199-255-192-0-1) 199.255.192.0 - 199.255.195.255
AWSEMAIL (NET-199-127-232-0-1) 199.127.232.0 - 199.127.235.255
AWSEMAIL-Z (NET-54-240-0-0-2) 54.240.0.0 - 54.240.63.255