69.171.247.21


DNS delegation of 69.171.247.21 updated: May 24, 2013 2:38:50 PM

Delegation

stepqueryauthservers
121.247.171.69.in-addr.arpa..(j,l,f,k,b,e,a,d,m,c,g,h,i).root-servers.net.
221.247.171.69.in-addr.arpa.in-addr.arpa.(e,a,d,b,f,c).in-addr-servers.arpa.
321.247.171.69.in-addr.arpa.69.in-addr.arpa.(z,w,y,u,r,t,x,v).arin.net.
421.247.171.69.in-addr.arpa.247.171.69.in-addr.arpa.(a,b).ns.facebook.com.
We pick j.root-servers.net, one of the 13 root servers (1), and ask it about 21.247.171.69.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 69.in-addr.arpa is delegated to eight name servers, including z.arin.net (3), so we ask that one and learn that 247.171.69.in-addr.arpa is delegated to two name servers (4), so we ask a.ns.facebook.com and get the following answer:

Authoritative answer

ANSWER for 21.247.171.69.in-addr.arpa.
21.247.171.69.in-addr.arpa.7200 PTR www-connect-ecmp-03-frc1.facebook.com.
AUTHORITATIVE for 21.247.171.69.in-addr.arpa.
247.171.69.in-addr.arpa.172800 NS b.ns.facebook.com. 247.171.69.in-addr.arpa use b.ns.facebook.com as name server.
172800 NS a.ns.facebook.com. 247.171.69.in-addr.arpa use a.ns.facebook.com as name server.
ADDITIONAL for 21.247.171.69.in-addr.arpa.
a.ns.facebook.com.172800 A69.171.239.12
b.ns.facebook.com.172800 A69.171.255.12
21. net. com. arpa. 247.21. arin.net. z.arin.net. u.arin.net. 171.247.21. w.arin.net. t.arin.net. v.arin.net. y.arin.net. r.arin.net. x.arin.net. in-addr.arpa. facebook.com. 69.171.247.21. ns.facebook.com. 69.in-addr.arpa. root-servers.net. a.ns.facebook.com. b.ns.facebook.com. 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. 171.69.in-addr.arpa. in-addr-servers.arpa. b.in-addr-servers.arpa. e.in-addr-servers.arpa. c.in-addr-servers.arpa. d.in-addr-servers.arpa. f.in-addr-servers.arpa. a.in-addr-servers.arpa. 247.171.69.in-addr.arpa. 21.247.171.69.in-addr.arpa. www-connect-ecmp-03-frc1.facebook.com.
whois 21
whois net
whois com
whois arpa
whois 247.21
whois arin.net
whois in-addr.arpa
whois facebook.com
whois root-servers.net
whois in-addr-servers.arpa

whois 247.21
deep analysis of: 69.171.247.21, 247.21
domain info api 247.21

RBL listing of 69.171.247.21
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