Official websites use .gov, except when they don't

A .gov website belongs to an official government organization in the United States. Some government websites don’t use .gov domains, just to keep you on your toes.

A .moe website belongs to some guy on the Internet. Thankfully the government don’t use .moe yet, but who knows?

Secure .gov websites use HTTPS

A lock (🔒) or https:// means you’ve safely connected to the website. Unless you are part of a corporate network that installs MITM root certificates on your machine, for “safety.”

Also, some governmental websites didn’t, or just plain don’t have HTTPS. Just because it’s not secure doesn't mean it’s not governmental!