New IPs for whitelisting database queries?

It looks like “new” requires new IP addresses to be white-listed for database access… true?

Context: Notebook with a very simple SQL query works fine on old, but on new I get an error:

Error: Error: [libpq] Failed to connect: connection to server at [redacted], port 5432 failed: Connection timed out
Is the server running on that host and accepting TCP/IP connections?

I see this using either Standard Library.