How to use Hosted Whois Web Service

How to make a webservice call to WhoisAPI?

http://www.whoisxmlapi.com/whoisserver/WhoisService?domainName=google.com&username=xxxxx&password=xxxxx

  additional input parameters: 
    outputFormat = XML|JSON  (defaults to XML)
    da = 0|1|2 (defaults to 0) 1 results in a quick check on domain availability, 2 is a slower but more accurate check on domain availability. 
    ip = 0|1 (defaults to 0) 1 results in returning ips for the domain name.
    callback = a javascript callback function used when outputFormat is JSON.  This is an impelmentation known as JSONP.  It invokes the callback function on the returned JSON response.	
    thinWhois = 0|1 (defaults to 0) 1 results in returning whois data from registry only without fetching whois data from registrar.  In schema registry data is returned under WhoisRecord->registryData.

how to query for my account balance?

http://www.whoisxmlapi.com/accountServices.php?servicetype=accountbalance&username=xxxxx&password=xxxxx

Will you warn me if my account balance is low or zero?

Yes, you will receive a warning email when your account balance falls below a level(default to be 10 and customizable by you). You will receive another warning email when your account balance reaches 0. To set the warning level, go to http://www.whoisxmlapi.com/accountServices.php?servicetype=accountUpdate&username=xxxxx&password=xxxxx&warn_threshold=30
supported input parameters are:

• warn_threshold = the account balance at which a warning email will be sent to you
  value: a positive number
  default value: 10
• warn_threshold_enabled = indicate whether a warning letter should be sent to you when the account balance reaches warn_threshold
  positive values: 1, true, on
  negative values: 0, false, off
  default value: 1
• warn_empty_enabled = indicate whether a warning letter should be sent to you when the account balance reaches 0
  positive values: 1, true, on
  negative values: 0, false, off
  default value: 1
• output_format=JSON | XML(default)

How to make query to Whois API Webservice in Java, PHP, .Net(C#), Ruby, Python, or Javascript?

Java Code : Example 1 Example 2 Netbean project files with Apache Http Component
PHP Code : Example 1 Example 2 Example 3
.Net(C#) Code : Example 1 Visual Studio solution
Ruby Code : Example 1
Python Code : Example 1
Perl Code : Example 1
Javascript Code : Example 1

Can I use https?

Yes, simply use https instead of http, the connection would be more secure but slower.

What tlds (gtlds and cctlds) do you support?

Yes, please check the list of TLDs that we support.

Is there a xml schema/documentation for the whois query result?

Yes, please download the xml schema, documentation on the query result, and a sample xml result.

Is there a term of service or SLA for using WHOIS API Webservice?

Please view the Terms of Service here