$ curl -v http://stackoverflow.com/ http://stackoverflow.com/ * Trying 151.101.65.69... * connect to 151.101.65.69 port 80 failed: Connection refused * T

$ curl -v http://stackoverflow.com/ http://stackoverflow.com/ * Trying 151.101.65.69... * connect to 151.101.65.69 port 80 failed: Connection refused * Trying 151.101.193.69... * connect to 151.101.193.69 port 80 failed: Connection refused * Trying 151.101.129.69... * connect to 151.101.129.69 port 80 failed: Connection refused * Trying 151.101.1.69... * connect to 151.101.1.69 port 80 failed: Connection refused * Failed to connect to stackoverflow.com port 80: Connection refused * Closing connection 0 curl: (7) Failed to connect to stackoverflow.com port 80: Connection refused