No ANY records found for 28.166.186.
Try 166.186 instead?
id 64239, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 28.166.186. IN ANY ;ANSWER ;AUTHORITY . 86372 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025102902 1800 900 604800 86400 ;ADDITIONAL
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