No ANY records found for 152.66.121.21.
Try 66.121.21 instead?
id 8348, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 152.66.121.21. IN ANY ;ANSWER ;AUTHORITY . 86391 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025051402 1800 900 604800 86400 ;ADDITIONAL
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