nginx one domain

and what's the problem to make 2 entries server — it takes default for everything and one for the right domain?
\r
server {
listen 80 default;
server_name noname;
access_log /dev/null;
error_log /dev/null;
return 444;
}
server {
listen 80;
server_name www.myname.com;
root /var/www/htdocs;
}

server_name write that you need

Duc ask him:
\rserver_name your.it is useful.house.Yong

Try server_name _ *;

Important clarification :)
\r
Try to insert
\r
location = / {
return 444;
}

Try this option
\r
if ($host !~ ^(your domain)$ ) {
return 444;
}