No ANY records found for 251.2.239.
Try 2.239 instead?
id 21336, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 251.2.239. IN ANY ;ANSWER ;AUTHORITY . 86385 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024122700 1800 900 604800 86400 ;ADDITIONAL
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