DNS delegation of cogentco.com updated: May 19, 2013 2:02:00 AM
Delegation
step
query
auth
servers
1
cogentco.com.
.
(k,d,h,e,f,i,b,j,l,a,g,c,m).root-servers.net.
2
cogentco.com.
com.
(b,h,j,l,d,g,c,i,f,m,k,e,a).gtld-servers.net.
3
cogentco.com.
cogentco.com.
(auth4,auth5,auth2,auth1).dns.cogentco.com.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about cogentco.com and learn that com is delegated to 13 name servers (2), so we ask b.gtld-servers.net where we learn that cogentco.com is delegated to four name servers, including auth4.dns.cogentco.com (3), so we ask that one and get the following answer:
Cogentco.com is a domain controlled by four domain name servers at cogentco.com themselves having a total of eight IP numbers. Some of them are on the same IP network. Incoming mail for cogentco.com is handled by four mail servers at psmtp.com. All four of them are on the same IP network. Cogentco.com has two IP numbers (38.100.128.10, 2001:550:1::cc01). Both are on different IP networks.
Cogentco.com is ranked #85217 world wide and is hosted on two servers in Washington, DC, United States. It has gained 768 inlinks over a period of 13 years.
