Hello celestia fam,
If you are looking for an RPC that is archival/pruned which is active on the testnet/mainnet
https://celestia-tools.brightlystake.com/
Or
If you are looking for a grpc endpoint that is active please check
https://celestia-tools.brightlystake.com/grpc-status
If there is anything else that can help reduce your time to search do let us know.
Cheers!