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Learning DNS for Developers

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amazon.com 216.73.216.106 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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121.83.217.187 Reverse DNS

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This IP has multiple PTR records

187.160/27.217.83.121.in-addr.arpa
mail.key-p.com