I think most recursive servers will try more than one of the authoritatives before giving up. And it's common to keep stats on which servers work, and send traf

I think most recursive servers will try more than one of the authoritatives before giving up. And it's common to keep stats on which servers work, and send traffic to those. So if you get the glue that says mastercard has 5 servers, and you already know 4 of them are good, probably send your query to one and don't even bother trying to find the address of the .ne server. I'd be surprised if it bubbles up in logging unless all/ maybe most of the authoritative servers for a popular hostname/domain name are unresponsive.