NS records do not appear in DSN checkers

Website, Application, Performance DNS & Network
2

Works from Cloudflare’s side:

learn.ciberspring.com.  60      IN      NS      ns1.exacttarget.com.
learn.ciberspring.com.  60      IN      NS      ns2.exacttarget.com.
learn.ciberspring.com.  60      IN      NS      ns3.exacttarget.com.
learn.ciberspring.com.  60      IN      NS      ns4.exacttarget.com.
;; Received 134 bytes from 2803:f800:50::6ca2:c057#53(cortney.ns.cloudflare.com) in 3 ms

;; Received 50 bytes from 104.225.42.65#53(ns2.exacttarget.com) in 30 ms

Same explanation as here as for why you can’t see that with DNS checkers.

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