Ghost blog shows on domain instead of subdomain only
Let's start with the zone file:
mysi.te. 1800 IN NS ns1.digitalocean.com.
mysi.te. 1800 IN NS ns2.digitalocean.com.
mysi.te. 1800 IN NS ns3.digitalocean.com.
mysi.te. 1800 IN A <droplet's IP address here>
txt.mysi.te. 1800 IN A <droplet's IP address here> // this is where the blog should be
www.mysi.te. 1800 IN CNAME mysi.te.
I changed the DNS settings so now any.mysi.te doesn't take you to mysi.te, but gives you an error message and this is fine. When you type txt.mysi.te, you go to the blog, and this is fine too. However, when you go to mysi.te, you will see the blog again, and I basically want to see Nginx's Welcome message there.
But this is not happening. What am I doing wrong?