Nginx non existing domains can not be routed to 404 page

My Nginx config file is included several server blocks that it's shown as below. With the following configuration, it redirects non-existing domains to the first server block in the config file. However I would like to redirect non-existing domains to 404 page.

 server 
{    
listen      443 ssl http2;
server_name     test-domain.no;
access_log  /var/log/nginx/nginx.access.log;
error_log   /var/log/nginx/nginx.error.log;
ssl    on;
ssl_certificate    /etc/nginx/ssl/certificates.pem;
ssl_certificate_key    /etc/nginx/ssl/server.key;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
ssl_session_timeout 1d;
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_session_tickets off;

location /
{
    proxy_pass         http://test-domain-sps.3fcf2715.cont.dockerapp.io:80/;
    proxy_redirect     off;

    ##proxy_set_header   Host             $host;
    proxy_set_header   X-Real-IP        $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;

    client_max_body_size       10m;
    client_body_buffer_size    128k;

    proxy_connect_timeout      90;
    proxy_send_timeout         90;
    proxy_read_timeout         90;

    proxy_buffer_size          4k;
    proxy_buffers              4 32k;
    proxy_busy_buffers_size    64k;
    proxy_temp_file_write_size 64k;
}
}

# Redirect from HTTP to HTTPS
server { 
 listen 80;
 server_name test-domain.no; 
 return 301 https://test-domain.no$request_uri;
 #rewrite ^/(.*) https://test-domain.no/$1 permanent; 
}

#others server blocks...

I appreciate if you let me know how I can routes non-existing domain in the config file to 404 page.

Edited:

Default nginx.conf:

 # cat /etc/nginx/nginx.conf                                                                                                                                              


user  nginx;                                                                                                                                                             

worker_processes  1;                                                                                                                                                     

error_log  /var/log/nginx/error.log warn;                                                                                                                                

pid        /var/run/nginx.pid;                                                                                                                                           


events {                                                                                                                                                                 
  worker_connections  1024;                                                                                                                                            

}                                                                                                                                                                        


http {                                                                                                                                                                   
 include       /etc/nginx/mime.types;                                                                                                                                 
 default_type  application/octet-stream;                                                                                                                              

 log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '                                                                                            
                  '$status $body_bytes_sent "$http_referer" '                                                                                                        
                  '"$http_user_agent" "$http_x_forwarded_for"';                                                                                                      

 access_log  /var/log/nginx/access.log  main;                                                                                                                         

 sendfile        on;                                                                                                                                                  
 #tcp_nopush     on;                                                                                                                                                  

 keepalive_timeout  65;                                                                                                                                               

 #gzip  on;                                                                                                                                                           

 include /etc/nginx/conf.d/*.conf;                                                                                                                                    

}