CC

[Igwe]

If a company gives you a code to log into their site, would the code be something you have or something you know?

[denbesten]

That would be a password, which is "something you know".   Here is a reference:  NIST 800-63b, section 8.1

Incidentally, a password, is always "something you know", even you randomly generate it and store it in a password manager.