DNS delegation of ctokrug.ru updated: May 25, 2013 6:20:25 AM
Delegation
step
query
auth
servers
1
ctokrug.ru.
.
(l,h,m,f,e,k,j,c,g,b,a,i,d).root-servers.net.
2
ctokrug.ru.
ru.
(e,a,b,d,f).dns.ripn.net.
3
ctokrug.ru.
ctokrug.ru.
(ns1,ns2).infobox.org.
We pick l.root-servers.net, one of the 13 root servers (1), and ask it about ctokrug.ru and learn that ru is delegated to five name servers (2), so we ask e.dns.ripn.net where we learn that ctokrug.ru is delegated to two name servers, including ns1.infobox.org (3), so we ask that one and get the following answer:
The four name servers ns1, ns2, ns3 and ns4.infobox.org together
Seven percent of the several thousand of domains that use name server group 1 point only to the IP number 77.221.130.42 (example: dvornyag.net and cafesunduk.ru ).
The two mail servers mx and smtp.infobox.ru together
There are several thousand of domains that use mail server group 1.