Domain Verification for Facebook business account
To verify your domain at Facebook business manager page select: "Brand Safety => Domains" menu. Then click the "Add" button.
In the window that opens, enter your domain name without "www" or "https: //" and click the "Add Domain" button.
Tab DNS Verification will contain an instruction describing the actions, that need to be done, and this page will also contain a line that needs to be inserted in the data field of the TXT record:
facebook-domain-verification=XXXXXXXXXXXXXXXXXXX
Copy this line and go to the "Domains" menu of your NIC.UA account.
Pick up a domain name you always dreamed of
Make sure the domain is using "NIC.UA name servers". To make settings, go to the "Name Servers" menu:
Click on the gear and then on the "Change" button:
Click "Add record" fill the data:
@ 14400 TXT facebook-domain-verification=XXXXXXXXXXXXXXXXXXX
Save changes.
Return to Facebook business manager page and click the "Verify" button.