spf-smtprelay.isc.upenn.edu. TXT RRSIG NSEC
Question and response
Question
dig spf-proofpoint.isc.upenn.edu. NSEC
Answer
spf-proofpoint.isc.upenn.edu. 600 NSEC spf-smtprelay.isc.upenn.edu. TXT RRSIG NSEC
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0