Nostria has a debug console for this purpose, can be opened in the Commands, is called "Debug: Ignored Relays".
It will show other profiles who are still using any of these dead relays.
People like
@50d94fc2…df281d63,
@d49a9023…990fa8df,
@101a112c…8721b0df might want to check their relays. Hey Perma, you have 28 relays in your list, at least 11 of those are dead.