i tried to ping but when i do it says desination host unreachable
Time to talk to your network admins, then. The message is saying that the ping packet is not destined for a host that the packet can find a path to.
If the problem were on the Arduino end, the packet would be delivered, but no response would be received (which will happen because your Arduino isn't responding to requests now).
There are examples of the Arduino acting as a server. You should modify one of them, and put your network data in it, and upload that for testing.