i use like 3, only the ones i pay for
if mister knuckles can find my home IP address i'll zap him a few hundred sats as a GFY
i just walked a colleague, who will be writing some protocol codec stuff in the next week or two the whole flow as reported in my logging added to a fork of mattn's algia
i can assure you, that IP addresses are not part of the nostr protocol and relays act as intermediaries and they don't give you addresses, only signed events