If you make changes to any zone file, you must change the Serial value (at the top of the file) to a higher value, so that the changes will actually be used.
Use the current date followed followed by 01 (or a higher number) as the new serial number.
Also, please use tabs (instead of spaces) for consistent formatting.
To actually activate any changes, someone with admin access needs to
- make sure the changes are contained in the "ffhb-dns" repository on the Github server
- log in on the DNS server and run
update-dns-zones.shto pull and activate the latest Git repository changes.