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216.73.216.138
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mx4.cogentco.com
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mx4.cogentco.com
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First observed
A
+1
-0
+
mx4.cogentco.com 43200 A 154.57.145.70
SOA
+1
-0
+
cogentco.com 3600 SOA auth1.dns.cogentco.com dns.cogentco.com 2026041508 10800 3600 604800 43200