I've had npm instances completely implode on me before and hated having to remember all the proxy hosts.
If you can still access the npm system and the sqlite file you can run this command to get a list displayed.


sqlite3 /data/database.sqlite "SELECT id, domain_names, forward_host, forward_port FROM proxy_host;"


if sqlite isn't installed (some containers use just a sqlite file), install it:
 
sudo apt -y install sqlite3