Since it cleared up on its own, it was probably that.
Another cause could be that you have some malware on your network that is attacking sites.
The author could be infected with something that wakes up sporadically (perhaps on external command) to participate in an attack, and then returns to dormancy. So the Cloudfare block being lifted isn't necessarily evidence that all is well.
Another cause could be that you have some malware on your network that is attacking sites.
The author could be infected with something that wakes up sporadically (perhaps on external command) to participate in an attack, and then returns to dormancy. So the Cloudfare block being lifted isn't necessarily evidence that all is well.