image/svg+xml
Alice
Bob
10.1.1.1
10.2.2.2
Root
10.10.10.10
10.20.20.20
“org”
10.30.30.30
“Example.org”
Where is “org”?
“org” is 10.20.20.20
Where is“Example.org”?
“Example.org” is 10.30.30.30
“Bob.Example.org”
“Bob.Example.org” is 10.2.2.2
Where is“Bob.Example.org”?