Hey, what software are you using to collect the data and display that graph? I wouldn't mind running something on my server that could notify or log if 1.1.1.1 (and other services I rely on) are slow or down.
more specifically looks like smokeping, rra file storage and rrdtool to draw the graph. Compared to modern things like influxdb+grafana it is a very oldschool setup but still works perfectly fine.