biz.mail.yahoo.com
DNS delegation of biz.mail.yahoo.com updated: May 25, 2013 2:47:00 PM
Delegation
step query auth servers 1 biz.mail.yahoo.com. . (j,d,l,b,a,f,e,h,c,m,k,g,i).root-servers.net. 2 biz.mail.yahoo.com. com. (a,i,c,m,b,l,d,k,g,h,j,f,e).gtld-servers.net. 3 biz.mail.yahoo.com. yahoo.com. (ns2,ns4,ns5,ns3,ns1).yahoo.com.
We pick j.root-servers.net , one of the 13 root servers (1), and ask it about biz.mail.yahoo.com and learn that com is delegated to 13 name servers (2), so we ask a.gtld-servers.net where we learn that yahoo.com is delegated to five name servers, including ns2.yahoo.com (3), so we ask that one and get the following answer:
Authoritative answer
AUTHORITATIVE for biz.mail.yahoo.com. yahoo.com. 600 SOA ns1.yahoo.com. hostmaster.yahoo-inc.com. ( 2013052406 3600 300 1814400 600 )
net. com. yahoo.com. ns2.yahoo.com. ns5.yahoo.com. ns1.yahoo.com. ns4.yahoo.com. ns3.yahoo.com. mail.yahoo.com. root-servers.net. gtld-servers.net. m.root-servers.net. a.root-servers.net. g.gtld-servers.net. e.gtld-servers.net. biz.mail.yahoo.com. j.root-servers.net. i.gtld-servers.net. f.gtld-servers.net. m.gtld-servers.net. k.gtld-servers.net. h.root-servers.net. d.root-servers.net. d.gtld-servers.net. i.root-servers.net. h.gtld-servers.net. l.root-servers.net. k.root-servers.net. g.root-servers.net. b.gtld-servers.net. f.root-servers.net. c.gtld-servers.net. c.root-servers.net. a.gtld-servers.net. b.root-servers.net. l.gtld-servers.net. j.gtld-servers.net. e.root-servers.net.
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