Note: Please make sure you are adding the correct record as changes of A record
might need at least 4 hours of propagation period.
You could like to add record as below where will point docs.domain.com to IP of 127.0.0.1
docs IN A 127.0.0.1
4. Click on "Edit DNS Zone Records" .
5. Click on "Add Record" to add new A record or click on the "Pen"
logo icon on the left side of the record to edit.