No ANY records found for 81.236.57.55.
Try 236.57.55 instead?
id 61909, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 81.236.57.55. IN ANY ;ANSWER ;AUTHORITY . 86296 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025050601 1800 900 604800 86400 ;ADDITIONAL
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