JsonWhois.COM API Example
The first step is for you to Register at JsonWhois.com and get an API key that will give you free requests every month.
Domain Whois Domain availability Screenshots
Free calls/month 500 included in whois 50
After that you can buy batches of requests. Cost per request is (USD) 0-0014-0.007 0.004-0.006
Click here to see your activities