I am trying to determine whether MX record updates have propagated. Performing an NSLOOKUP in Windows returns “Not Implemented”
Cloudflare doesn’t support requests for ANY
However a search for type = Mx will work (or in this case return no result because you don’t have an Mx record) for your root domain. The value for your root domain in the name field should be “@” and the server field should contain the name(s) of your Mx records.