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Learning DNS for Developers

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amazon.com 216.73.216.182 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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209.15.37.20 Reverse DNS

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1 Issue

This IP has multiple PTR records

mx1.webnames.ca
mx3.webnames.ca
mx2.webnames.ca
smtp.webnames.ca