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Learning DNS for Developers

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amazon.com 216.73.216.155 Your IP DNS Lookup DNS Propagation Checker SPF Record Lookup A Record Lookup AAAA Record Lookup CNAME Record Lookup TXT Record Lookup MX Record Lookup

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217.11.251.227 Reverse DNS

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1 Issue

This IP has multiple PTR records

227.225-237.251.11.217.in-addr.arpa
smtp3.mailpoint.cz