How does NewRelic's `Availability monitoring` monitor CDN's website?

Question

I have a domain that is hosted by a CDN(Akamai). This means depending on visitor's geographic region this domain will resolve into different IPs closest to the user.

NewRelic service can monitor a domain/website for availability from its "pinger" agents in multiple locations around the world.

How do those agents handle geo-distributed domains? Does each agent resolve the domain on its own? Or does some central agent resolves the domain and all other agents access the same IP?

Answer 1

Each regional pinger performs its own lookup using a local resolver.