A domain setup correctly would look something like this.
; <<>> DiG 9.2.1 <<>> +trace hosthead.com
;; global options: printcmd
. 150266 IN NS E.ROOT-SERVERS.NET.
. 150266 IN NS D.ROOT-SERVERS.NET.
. 150266 IN NS A.ROOT-SERVERS.NET.
. 150266 IN NS H.ROOT-SERVERS.NET.
. 150266 IN NS C.ROOT-SERVERS.NET.
. 150266 IN NS G.ROOT-SERVERS.NET.
. 150266 IN NS F.ROOT-SERVERS.NET.
. 150266 IN NS B.ROOT-SERVERS.NET.
. 150266 IN NS J.ROOT-SERVERS.NET.
. 150266 IN NS K.ROOT-SERVERS.NET.
. 150266 IN NS L.ROOT-SERVERS.NET.
. 150266 IN NS M.ROOT-SERVERS.NET.
. 150266 IN NS I.ROOT-SERVERS.NET.
;; Received 436 bytes from 24.196.64.39#53(24.196.64.39) in 29 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 502 bytes from 192.203.230.10#53(E.ROOT-SERVERS.NET) in 76 ms
hosthead.com. 172800 IN NS ns1.hosthead.com.
hosthead.com. 172800 IN NS ns2.hosthead.com.
;; Received 98 bytes from 192.5.6.30#53(A.GTLD-SERVERS.NET) in 69 ms
hosthead.com. 3600 IN A 8.9.32.46
hosthead.com. 3600 IN NS ns2.hosthead.com.
hosthead.com. 3600 IN NS ns1.hosthead.com.
;; Received 114 bytes from 8.9.32.45#53(ns1.hosthead.com) in 44 ms
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