What is Homey sending to collector-001.eu01.nr-data.net?

I just noticed that Homey is trying to DNS resolve collector-001.eu01.nr-data.net every minute (being blocked by my AdGuard DNS).

Why and what is being shared to that suspicious site?

It is a New Relic domain which is used to collect log files for its log analyzer service.
Athom probably uses New Relic to keep an eye on (error) logs.