No ANY records found for 159.6.6.
Try 6.6 instead?
id 15222, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 159.6.6. IN ANY ;ANSWER ;AUTHORITY . 86103 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024112501 1800 900 604800 86400 ;ADDITIONAL
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