Service notification disabled in Icingaweb2

I just came across that some of the hosts have their services notification disabled while looking at the Icingaweb2 UI. I couldn’t find anything in the log that it was done on purpose. So I don’t know how the service notification got disabled. Any idea?

So besides looking for the cause, I’m looking for a way get the lists of the hosts who have their services notifications disabled via curl or api ?

Please advise
Thanks

You might query the objects via API and see if that information is returned. I’m not sure off hand.