You're only talking about DNS. Of course I am, that's the only way to know what the glue records actually are. Naturally there is the registrar side, but none

You're only talking about DNS. Of course I am, that's the only way to know what the glue records actually are. Naturally there is the registrar side, but none of that means anything, when you're working with DNS, and need to know what is configured at the root server level. Which is all that matters when you're doing DNS lookups. My point here is, that using whois won't tell you that reliably. Only a direct root server lookup will. What we're saying is not really that far apart, as we're both agreeing that whois is not the same as root server glue records.