No ANY records found for 16.172.52.
Try 172.52 instead?
id 14336, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 16.172.52. IN ANY ;ANSWER ;AUTHORITY . 86329 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025042600 1800 900 604800 86400 ;ADDITIONAL
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