TLD/net/edgecastcdn.netについて、ここに記述してください。
%dnsq ns edgecastcdn.net a.gtld-servers.net
2 edgecastcdn.net: 157 bytes, 1+0+2+4 records, response, noerror query: 2 edgecastcdn.net authority: edgecastcdn.net 172800 NS ns1.edgecastcdn.net authority: edgecastcdn.net 172800 NS ns2.edgecastcdn.net additional: ns1.edgecastcdn.net 172800 28 &\006(\000\000\001\000\000\000\000\000\000\000\000\000\005 additional: ns1.edgecastcdn.net 172800 A 72.21.80.5 additional: ns2.edgecastcdn.net 172800 28 &\006(\000\000\001\000\000\000\000\000\000\000\000\000\006 additional: ns2.edgecastcdn.net 172800 A 72.21.80.6