No ANY records found for 18.249.156.
Try 249.156 instead?
id 6014, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 18.249.156. IN ANY ;ANSWER ;AUTHORITY . 86383 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024123001 1800 900 604800 86400 ;ADDITIONAL
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