DNS delegation of jsc.nasa.gov updated: Jun 19, 2013 7:49:22 PM
Delegation
step
query
auth
servers
1
jsc.nasa.gov.
.
(k,d,f,m,l,h,c,b,g,j,e,i,a).root-servers.net.
2
jsc.nasa.gov.
gov.
(b,a).gov-servers.net.
3
jsc.nasa.gov.
nasa.gov.
(ns3,ns2,ns1).nasa.gov.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about jsc.nasa.gov and learn that gov is delegated to two name servers (2), so we ask b.gov-servers.net where we learn that nasa.gov is delegated to three name servers, including ns3.nasa.gov (3), so we ask that one and get the following answer: