How to check whether or not the site is in sandbox?

Instructions
1
Go to Google's homepage at google.com.

2
In the search bar, you will need to type in the following query: "site:" (without the quotes), followed by your website address. Please note that you must give the FULL website address, with the "http://" included at the beginning of the address. For example, if your website is "examplesite.com", the actual text you would type into the search bar is "site:http:// examplesite.com" (without the quotes, of course). Make sure to NOT put any

Hmm kelly thanks for your suggestion but i did not get my answer yet ?

There is no proper way to check whether or not it is in the sandbox - in fact whether or not there is even a sandbox is debatable. My suggestion, just keep working on quality content and building links, and you'll attain the best rankings.