No ANY records found for 172.253.115.18.
Try 253.115.18 instead?
id 33443, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 172.253.115.18. IN ANY ;ANSWER ;AUTHORITY . 86315 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025041900 1800 900 604800 86400 ;ADDITIONAL
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