I want to filter database from domain or sub domain (many odoo.domain.xxx URL).

I can find many tuto to do this but I want to see all database if I connect to a "Master URL" (like master.odoo.domain.xxx).

e.g. I have 4 Databases and I use ODOO v8 (is the same issue/solution with v9  or v10):

prod1 : production database on odoo.prod1.fr

prod2 : production database on odoo.prod2.fr

test1 : test database for module testing

dev1 : in development database. Will become prod3

If I connect to odoo.prod1.fr or odoo.prod2.fr I want to see only the correct database.

BUT, if I connect to master.odoo.domain.xxx I want to see all the databases( 4 databases).

did anyone know how to do this? Thanks