No ANY records found for 251.193.96.
Try 193.96 instead?
id 57081, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 251.193.96. IN ANY ;ANSWER ;AUTHORITY . 86390 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024112500 1800 900 604800 86400 ;ADDITIONAL
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