Changing the DNS numbers on Mac computers with OS X

1. Choose System Preferences from the Apple menu. The System Preferences window will open.

2. Click on the Network icon. The Network window will open.

3. Choose the TCP/IP tab in the Network window.

 

4. In the DNS Servers box, type the following numbers and periods:

69.18.32.50
69.18.32.51

5. In the Search Domains box, enter lisco.com

6. Click on the Apply Now button.