If you have a network device - such as a router, you can check your MAC address on the sticker at the bottom of your device. To get network connection check what are: LAN MAC and WAN MAC. All ISP needs the WAN MAC.
That was simple, but how to get your computer's MAC address?
Lets do this!
To start, press the „Windows button” on your keyboard and „R” button. Press both in the same time.
Then a new window will appear.
Please enter „cmd” command and click „OK” In a new black window (terminal) put new command ipconfig /all and press ENTER
Now you'll get the main network settings. Find there a line which contains: eth0, eth or ethernet. In our case it is „Ethernet adapter”
The lines below are important/:
In our case MAC address is: 6C-62-7B-41-0E-7B