star-slb-10-03-ash2.facebook.com
DNS delegation of star-slb-10-03-ash2.facebook.com updated: Jun 19, 2013 10:30:32 AM
Delegation
step query auth servers
1 star-slb-10-03-ash2.facebook.com. . (c,l,g,a,f,e,k,h,b,m,i,j,d).root-servers.net. 2 star-slb-10-03-ash2.facebook.com. com. (l,c,d,g,k,b,f,m,i,h,e,a,j).gtld-servers.net. 3 star-slb-10-03-ash2.facebook.com. facebook.com. (a,b).ns.facebook.com.
We pick c.root-servers.net , one of the 13 root servers (1), and ask it about star-slb-10-03-ash2.facebook.com and learn that com is delegated to 13 name servers (2), so we ask l.gtld-servers.net where we learn that facebook.com is delegated to two name servers, including a.ns.facebook.com (3), so we ask that one and get the following answer:
Authoritative answer
AUTHORITATIVE for star-slb-10-03-ash2.facebook.com. facebook.com. 120 SOA a.ns.facebook.com. dns.facebook.com. ( 2013061801 7200 1800 604800 120 )
net. com. facebook.com. ns.facebook.com. root-servers.net. gtld-servers.net. a.ns.facebook.com. b.ns.facebook.com. 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. star-slb-10-03-ash2.facebook.com.
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