I have a problem with my server where the domain does not work. DNS addresses are not responding. They do not correspond to pings. Named tued off and does not want to tu on. The store stopped working suddenly all the work on the server was not performed. I have been working on fixing the problem for three days but nothing comes to mind. Has any of you already had a similar problem? I did system updates but it also did not help.

Screen:
www.masloshea.eu/1.png
www.masloshea.eu/2.png
www.masloshea.eu/3.png
www.masloshea.eu/4.png