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Learning DNS for Developers

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amazon.com 216.73.216.211 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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o1.ptr3816.codetwo.com IP addresses

Queried just now

A IPv4 address

30m

Time to live

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SendGrid

AS11377

United States of America

Cedar City, Utah

AAAA IPv6 address

3m

Time to live

View CLI command

Check propagation

o1.ptr3816.codetwo.com has no AAAA records.