No ANY records found for 31.205.50.
Try 205.50 instead?
id 64406, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 31.205.50. IN ANY ;ANSWER ;AUTHORITY . 86284 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024122701 1800 900 604800 86400 ;ADDITIONAL
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