Some DNS test queries from DNSOperation mailing list

dig +short TXT maxmind.test-ipv6.com @8.8.8.8 It returns the IP address AS number from which the resolver sends a query (should be one of those IP addresses Google published).

dig +short TXT test.dns.google.com., which should return the TXT record “Thanks for using Google Public  NS.” if the query is served by Google Public DNS, and NXDOMAIN otherwise.

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