Can you tell me if my iPad is still. Under warranty

No. This is a user to user forum, we, users, have no access to such information.

You can enter your serial number at: link-> Check Your Service and Support Coverage - Apple Support and it will tell you.

You can check your warranty status directly from iPad Settings:

Settings > General > About

Below the initial block of data, you will find details of your warranty status; tapping this item will show more detail of your warranty term and/or expiry date.