# dig @8.8.8.8 +trace www.dropbox-dns.com
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-25.P1.el5_11.4 <<>> @8.8.8.8 +trace www.dropbox-dns.com
; (1 server found)
;; global options: printcmd
. 19674 IN NS e.root-servers.net.
. 19674 IN NS l.root-servers.net.
. 19674 IN NS i.root-servers.net.
. 19674 IN NS b.root-servers.net.
. 19674 IN NS k.root-servers.net.
. 19674 IN NS d.root-servers.net.
. 19674 IN NS j.root-servers.net.
. 19674 IN NS h.root-servers.net.
. 19674 IN NS c.root-servers.net.
. 19674 IN NS f.root-servers.net.
. 19674 IN NS m.root-servers.net.
. 19674 IN NS a.root-servers.net.
. 19674 IN NS g.root-servers.net.
;; Received 228 bytes from 8.8.8.8#53(8.8.8.8) in 15 ms
com. 172800 IN NS a.gtld-servers.net.
com. 172800 IN NS b.gtld-servers.net.
com. 172800 IN NS c.gtld-servers.net.
com. 172800 IN NS d.gtld-servers.net.
com. 172800 IN NS e.gtld-servers.net.
com. 172800 IN NS f.gtld-servers.net.
com. 172800 IN NS g.gtld-servers.net.
com. 172800 IN NS h.gtld-servers.net.
com. 172800 IN NS i.gtld-servers.net.
com. 172800 IN NS j.gtld-servers.net.
com. 172800 IN NS k.gtld-servers.net.
com. 172800 IN NS l.gtld-servers.net.
com. 172800 IN NS m.gtld-servers.net.
;; Received 509 bytes from 2001:500:a8::e#53(e.root-servers.net) in 43 ms
dropbox-dns.com. 172800 IN NS dns1.p06.nsone.net.
dropbox-dns.com. 172800 IN NS dns2.p06.nsone.net.
dropbox-dns.com. 172800 IN NS dns3.p06.nsone.net.
dropbox-dns.com. 172800 IN NS dns4.p06.nsone.net.
;; Received 190 bytes from 2001:503:a83e::2:30#53(a.gtld-servers.net) in 167 ms
dig: couldn't get address for 'dns1.p06.nsone.net': failure