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Learning DNS for Developers

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amazon.com 216.73.216.1 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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207-172-157-181.in-addr.mail.rcn.net SPF records

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No SPF records No SPF records found for 207-172-157-181.in-addr.mail.rcn.net.

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