MacMan:~ james$ telnet checkip.amazonaws.com 80
Trying 23.21.234.1...
Connected to checkip-elb-1947732551.us-east-1.elb.amazonaws.com.
Escape character is '^]'.
GET checkip.amazonaws.com HTTP/1.0
HTTP/1.1 400 BAD_REQUEST
Content-Length: 0
Connection: Close
Connection closed by foreign host.
MacMan:~ james$