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38
DNS delegation of 38 updated: February 4, 2012 20:52
Delegation
| step | query | auth | servers |
|---|
| 1 | 38.in-addr.arpa. | . | (m,k,d,g,b,c,l,j,a,f,e,h,i).root-servers.net. | | 2 | 38.in-addr.arpa. | in-addr.arpa. | (e,d,b,c,a,f).in-addr-servers.arpa. | | 3 | 38.in-addr.arpa. | 38.in-addr.arpa. | (auth2,auth5,auth4,auth1).dns.cogentco.com. |
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about 38.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask e.in-addr-servers.arpa where we learn that 38.in-addr.arpa is delegated to four name servers, including auth2.dns.cogentco.com (3), so we ask that one and get the following answer:
Authoritative answer
38. net. com. arpa. in-addr.arpa. cogentco.com. 38.in-addr.arpa. dns.cogentco.com. root-servers.net. m.root-servers.net. a.root-servers.net. j.root-servers.net. h.root-servers.net. d.root-servers.net. i.root-servers.net. l.root-servers.net. k.root-servers.net. g.root-servers.net. f.root-servers.net. c.root-servers.net. b.root-servers.net. e.root-servers.net. in-addr-servers.arpa. auth1.dns.cogentco.com. auth2.dns.cogentco.com. b.in-addr-servers.arpa. e.in-addr-servers.arpa. auth4.dns.cogentco.com. auth5.dns.cogentco.com. c.in-addr-servers.arpa. d.in-addr-servers.arpa. f.in-addr-servers.arpa. a.in-addr-servers.arpa.
whois in-addr.arpa
whois cogentco.com
whois root-servers.net
whois in-addr-servers.arpa
deep analysis of: 38
RBL listing of 38
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