No ANY records found for 51.108.103.
Try 108.103 instead?
id 35407, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 51.108.103. IN ANY ;ANSWER ;AUTHORITY . 86327 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024100600 1800 900 604800 86400 ;ADDITIONAL
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