No ANY records found for 171.16.33.
Try 16.33 instead?
id 45911, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 171.16.33. IN ANY ;ANSWER ;AUTHORITY . 86384 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025051302 1800 900 604800 86400 ;ADDITIONAL
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