Below are some hosting providers where you can get a server
Amazon EC2, t2.micro ($7/mo., eglible to free sign up offer).
Hetzner. German, European. Starts around 7€ / mo.
Vultr. Similar to DigitalOcean, but cheaper and more flexible. Starts at $5 / mo.
Linode. Rock solid, old scool hosting company. $10 / mo.