We run a few RIPE Atlas probes and anchors - why you should too? RIPE Atlas is extremely useful service to measure and monitor network events globally. As per their own statistics at

RIPE Atlas - RIPE Network Coordination Centre

they cover about 5% of all allocated ASNs (not only RIPE region) and 89% of countries. This service provides an unprecedented real time view of how the Internet is working. This data is valuable for researchers worldwide and accessible for anyone. It can help you to troubleshoot own network, look at connectivity or improve the Internet (if you are an ISP). Participation is volunteer, however all operators of both probe or anchor get "credits". They are used for running your own custom measurements and can be shared. More details on how it works:

RIPE Network Coordination Center

How RIPE Atlas works

All you need to know about RIPE Atlas.

Our probes and anchors:

RIPE Atlas - RIPE Network Coordination Centre