How to check what DNS server address you're currently using on Mac OS
Click on the Apple Logo located at the top left hand corner of your Mac and open System Preferences.
Navigate to Internet & Wireless and click on Network.
Select your active Internet Adapter (Airport if Wireless or Ethernet if Wired) and click Advanced.
Navigate to the DNS tab, you will now be able to see all the DNS addresses you've saved in your network settings.
If there are no listed server addresses, then your network setting is most likely not set up with SimpleTelly.
If this is the case, please follow the instructions in our Mac OS setup guide below to set up SimpleTelly on your computer: