Your Search Key (also known as an API Key) must be included in each request to the API.
If you haven't got a Search Key already, sign up for a free trial.
By default, your account will accept up to 5 lookups from the same IP address in every 5-minute period.
From within your account, you can also permit unrestricted access to lookups made from trusted websites and servers.
See our four common scenarios for guidance on how best to do this.
HTTPS is supported by the API - simply prefix your requests with
CORS is supported by the API - read more about CORS on Wikipedia