Earlier quoted context omitted.
GoDaddy runs the root dns for .us
> GoDaddy runs the root dns for .us .us is not the “root DNS” and your misidentification is muddying the waters. .us is a TLD (Top-Level Domain) and more specifically, a ccTLD (cc = ‘Country Code’). https://en.wikipedia.org/wiki/.us And the English Wikipedia says that its registrar is a subsidiary of GoDaddy named “Registry Services, LLC”. The root DNS servers and registry are not run by GoDaddy or a subsidiary. http…
Its also very reasonable to use the more well-known name of the parent company to describe sonething done by its subsidary.