b.yahoodns.net
DNS delegation of b.yahoodns.net updated: May 25, 2013 7:23:30 AM
Delegation
step query auth servers 1 b.yahoodns.net. . (l,h,i,c,j,k,d,e,a,f,g,m,b).root-servers.net. 2 b.yahoodns.net. net. (e,k,g,f,a,c,d,b,l,m,j,i,h).gtld-servers.net. 3 b.yahoodns.net. yahoodns.net. (ns3,ns4,ns1,ns5,ns2).yahoo.com.
We pick l.root-servers.net , one of the 13 root servers (1), and ask it about b.yahoodns.net and learn that net is delegated to 13 name servers (2), so we ask e.gtld-servers.net where we learn that yahoodns.net is delegated to five name servers, including ns3.yahoo.com (3), so we ask that one and get the following answer:
Authoritative answer
AUTHORITATIVE for b.yahoodns.net. yahoodns.net. 600 SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2013052301 3600 900 604800 600 )
net. com. yahoo.com. yahoodns.net. ns5.yahoo.com. ns2.yahoo.com. ns1.yahoo.com. ns4.yahoo.com. ns3.yahoo.com. b.yahoodns.net. root-servers.net. gtld-servers.net. m.root-servers.net. a.root-servers.net. g.gtld-servers.net. e.gtld-servers.net. 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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