Here is a list of onion relays:
This is a list of nostr relays exposed as onion services. The list is currently actively maintained on GitHub. Contributions is always appreciated!
Relay name Description Onion url Operator nostr.oxtr.dev Same relay as clearnet relay nostr.oxtr.dev ws://oxtrdevav64z64yb7x6rjg4ntzqjhedm5b5zjqulugknhzr46ny2qbad.onion njump) relay.snort.social Same relay as clearnet relay relay.snort.social wss://skzzn6cimfdv5e2phjc4yr5v7ikbxtn5f7dkwn5c7v47tduzlbosqmqd.onion njump) nostr.thesamecat.io Same relay as clearnet relay nostr.thesamecat.io ws://2jsnlhfnelig5acq6iacydmzdbdmg7xwunm4xl6qwbvzacw4lwrjmlyd.onion njump) nostr.land The nostr.land paid relay (same as clearnet) ws://nostrland2gdw7g3y77ctftovvil76vquipymo7tsctlxpiwknevzfid.onion
http://nostrland2gdw7g3y77ctftovvil76vquipymo7tsctlxpiwknevzfid.onion (for payments)njump) bitcoiner.social No auth required, currently ws://bitcoinr6de5lkvx4tpwdmzrdfdpla5sya2afwpcabjup2xpi5dulbad.onion njump) relay.westernbtc.com The westernbtc.com paid relay (via Tor: hjar34h5zwgtvxr345q7rncso3dhdaryuxgri3lu7lbhmnzvin72z5ad.onion) ws://westbtcebhgi4ilxxziefho6bqu5lqwa5ncfjefnfebbhx2cwqx5knyd.onion njump) freelay.sovbit.host Free relay for sovbit.host ws://sovbitm2enxfr5ot6qscwy5ermdffbqscy66wirkbsigvcshumyzbbqd.onion njump) nostr.sovbit.host Paied relay for sovbit.host ws://sovbitgz5uqyh7jwcsudq4sspxlj4kbnurvd3xarkkx2use3k6rlibqd.onion njump) nostr.wine 🍷 nostr.wine relay (same as clearnet) ws://nostrwinemdptvqukjttinajfeedhf46hfd5bz2aj2q5uwp7zros3nad.onion
http://nostrwinemdptvqukjttinajfeedhf46hfd5bz2aj2q5uwp7zros3nad.onionnjump) inbox.nostr.wine 🍷 inbox.nostr.wine relay (same as clearnet) ws://wineinboxkayswlofkugkjwhoyi744qvlzdxlmdvwe7cei2xxy4gc6ad.onion
http://wineinboxkayswlofkugkjwhoyi744qvlzdxlmdvwe7cei2xxy4gc6ad.onionnjump)
Or on github:
https://github.com/0xtrr/onion-service-nostr-relays