Email and Mobile Validations - IMP & URGENT

Question

Hi...
My requirement is -
1. In the aspx page, there are 2 Textboxes, one for Mobile Number and second for Email ID.
2. Validations of Mobile Number -

2.1. Validations for Mobile Number -
  a.Check if the number really exits or not (Cell numbers in India i.e. [phone]).
  b. If yes, send a message to that number on Button Click.

2.2. Validations for Email ID -
  a. Eg - For email like [email protected]; system should say - Invalid email as there is nothing like xyz.com in internet.
  b. For email like - [email protected]; system must check that whether this gmail id really exists or not.
If no, the system must say - No such gmail or yahoo id exists.

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Please help. It is very urgent.