No ANY records found for 164.173.191.
Try 173.191 instead?
id 63768, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 164.173.191. IN ANY ;ANSWER ;AUTHORITY . 86388 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025041900 1800 900 604800 86400 ;ADDITIONAL
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