No ANY records found for 55.18.163.
Try 18.163 instead?
id 52334, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 55.18.163. IN ANY ;ANSWER ;AUTHORITY . 86374 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2026061502 1800 900 604800 86400 ;ADDITIONAL
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