No ANY records found for 51.44.19.
Try 44.19 instead?
id 42333, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 51.44.19. IN ANY ;ANSWER ;AUTHORITY . 86329 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024122701 1800 900 604800 86400 ;ADDITIONAL
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