How to add multiple ip and add sub-domain in nginx?

I was following the nginx,uwsgi with flask tutorial. My nginx config file contains:

server {

listen 5000;
server_name 19X.X.X.X;

client_header_buffer_size 5M;
large_client_header_buffers 4 5M;
client_max_body_size 75M;

location / {
    include uwsgi_params;     
uwsgi_pass flask:8080;
}

}

Here I want to add and additional IP address like 123.345.67.8 and a subdomain test.mydomain.com. How can I add there