ns1.proofpoint.us DNS history

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First observed
A +1 -0
+ ns1.proofpoint.us 1800 A 208.84.67.208
AAAA +1 -0
+ ns1.proofpoint.us 1800 AAAA 2620:100:9000:1::d0
SOA +1 -0
+ proofpoint.us 60 SOA ns1.proofpoint.com ops.proofpoint.com 2017042779 28800 2880 604800 1200

Querying failed.