No ANY records found for 72.13.63.75.
Try 13.63.75 instead?
id 50729, opcode QUERY, rcode NXDOMAIN, flags QR RD RA ;QUESTION 72.13.63.75. IN ANY ;ANSWER ;AUTHORITY . 3256 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025052500 1800 900 604800 86400 ;ADDITIONAL
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