No ANY records found for 163.172.52.103.
Try 172.52.103 instead?
id 6403, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 163.172.52.103. IN ANY ;ANSWER ;AUTHORITY . 86397 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2026010200 1800 900 604800 86400 ;ADDITIONAL
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