wilmer@fiona:~$ dig +trace ns tactical-grace.net

; <<>> DiG 9.8.1-P1 <<>> +trace ns tactical-grace.net
;; global options: +cmd
.                       221789  IN      NS      m.root-servers.net.
.                       221789  IN      NS      k.root-servers.net.
.                       221789  IN      NS      e.root-servers.net.
.                       221789  IN      NS      h.root-servers.net.
.                       221789  IN      NS      j.root-servers.net.
.                       221789  IN      NS      b.root-servers.net.
.                       221789  IN      NS      f.root-servers.net.
.                       221789  IN      NS      i.root-servers.net.
.                       221789  IN      NS      g.root-servers.net.
.                       221789  IN      NS      l.root-servers.net.
.                       221789  IN      NS      a.root-servers.net.
.                       221789  IN      NS      d.root-servers.net.
.                       221789  IN      NS      c.root-servers.net.
;; Received 512 bytes from 192.168.78.64#53(192.168.78.64) in 13 ms

net.                    172800  IN      NS      a.gtld-servers.net.
net.                    172800  IN      NS      b.gtld-servers.net.
net.                    172800  IN      NS      c.gtld-servers.net.
net.                    172800  IN      NS      d.gtld-servers.net.
net.                    172800  IN      NS      e.gtld-servers.net.
net.                    172800  IN      NS      f.gtld-servers.net.
net.                    172800  IN      NS      g.gtld-servers.net.
net.                    172800  IN      NS      h.gtld-servers.net.
net.                    172800  IN      NS      i.gtld-servers.net.
net.                    172800  IN      NS      j.gtld-servers.net.
net.                    172800  IN      NS      k.gtld-servers.net.
net.                    172800  IN      NS      l.gtld-servers.net.
net.                    172800  IN      NS      m.gtld-servers.net.
;; Received 493 bytes from 193.0.14.129#53(193.0.14.129) in 34 ms

tactical-grace.net.     172800  IN      NS      ivan.ns.cloudflare.com.
tactical-grace.net.     172800  IN      NS      lucy.ns.cloudflare.com.
;; Received 179 bytes from 192.55.83.30#53(192.55.83.30) in 361 ms

tactical-grace.net.     86400   IN      NS      ivan.ns.cloudflare.com.
tactical-grace.net.     86400   IN      NS      lucy.ns.cloudflare.com.
;; Received 91 bytes from 173.245.58.133#53(173.245.58.133) in 8 ms