No ANY records found for 21.206.80.
Try 206.80 instead?
id 24035, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 21.206.80. IN ANY ;ANSWER ;AUTHORITY . 86379 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2024112400 1800 900 604800 86400 ;ADDITIONAL
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