NIP-66 solves this issue.
nostr:nprofile1qqsvvcpmpuwvlmrztkwq3d6nunmhf6hh688jw6fzxyjmtl2d5u5qr8spz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsq3samnwvaz7tmjv4kxz7fwdehhxmm5wfhhxtnpwpcq3k5k58 I'm doing some experiments, and the Nosotros "defunct relay" list just came in handy. We should really have something like this shared and updated by the community, since every dev scanning relays from lists and hints will inevitably come across the same dead relays over and over again.
https://github.com/cesardeazevedo/nosotros/blob/main/.env#L29-L121
Discussion
Thanks for the hint. I haven't looked at the monitoring side of things. I'll have a look at it.