Most Captive Portals MITM the connection, rather than set up a secure connection for their customers. Which is terrible. But, the IANA have ensured that their

Most Captive Portals MITM the connection, rather than set up a secure connection for their customers. Which is terrible. But, the IANA have ensured that their example domains (example.com, etc) will continue to resolve correctly for the forseeable future.