Unfortunately not from within Sage 100, as this information is not surfaced to us from Sage's common service. But, if you go directly to Plaid you can lookup any of the 12K+ supported banks and obtain the bank's URL that Plaid is using.

1. Create a free account with Plaid. dashboard.plaid.com/signup
2. Once the account has been created and verified, you can login to the Plaid dashboard. dashboard.plaid.com/overview
3. From the dashboard, select Activiy | Status, then in the Lookup field enter the desired bank name.
4. It may take a few seconds to refresh, but when the bank information displays it will include the URL that Plaid is using.

Regards,
Russell

Thanks for the info.  The addresses just seem to be the regular https addresses, not what the bank is saying is needed, so we'll see if this works, or not.