watchA/www.ana.co.jp/つづきについて、ここに記述してください。
www.ana.co.jp.edgekey.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net.
akadns.net. 172800 IN NS a3-129.akadns.net. akadns.net. 172800 IN NS a7-131.akadns.net. akadns.net. 172800 IN NS a11-129.akadns.net. akadns.net. 172800 IN NS a1-128.akadns.net. akadns.net. 172800 IN NS a9-128.akadns.net. akadns.net. 172800 IN NS a5-130.akadns.org. akadns.net. 172800 IN NS a13-130.akadns.org. akadns.net. 172800 IN NS a28-129.akadns.org. akadns.net. 172800 IN NS a12-131.akadns.org. akadns.net. 172800 IN NS a18-128.akadns.org.
1. zone cut 探索
$ dig -t ns globalredir.akadns.net @a1-128.akadns.net. globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net.
net.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net. edgekey.net.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net. jp.edgekey.net.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net. co.jp.edgekey.net.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net. ana.co.jp.edgekey.net.globalredir.akadns.net. 300 IN CNAME a23.g.akamai.net. www.ana.co.jp.edgekey.net.globalredir.akadns.net. 3600 IN CNAME e1883.b.akamaiedge.net.