[root@columbia /etc]# dig @69.59.188.76 gmail.com +trace
; <<>> DiG 9.3.4 <<>> @69.59.188.76 gmail.com +trace
; (1 server found)
;; global options: printcmd
. 246784 IN NS K.ROOT-SERVERS.NET.
. 246784 IN NS L.ROOT-SERVERS.NET.
. 246784 IN NS M.ROOT-SERVERS.NET.
. 246784 IN NS A.ROOT-SERVERS.NET.
. 246784 IN NS B.ROOT-SERVERS.NET.
. 246784 IN NS C.ROOT-SERVERS.NET.
. 246784 IN NS D.ROOT-SERVERS.NET.
. 246784 IN NS E.ROOT-SERVERS.NET.
. 246784 IN NS F.ROOT-SERVERS.NET.
. 246784 IN NS G.ROOT-SERVERS.NET.
. 246784 IN NS H.ROOT-SERVERS.NET.
. 246784 IN NS I.ROOT-SERVERS.NET.
. 246784 IN NS J.ROOT-SERVERS.NET.
;; Received 436 bytes from 69.59.188.76#53(69.59.188.76) in 22 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 487 bytes from 193.0.14.129#53(K.ROOT-SERVERS.NET) in 149 ms
dig: couldn't get address for 'a.gtld-servers.net': not found