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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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74.217.56.192 Reverse DNS

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This IP has multiple PTR records

192.128-255.56.217.74.in-addr.arpa
mail-en01-crm-rl01.avature.net