Anyone motivated would always have been able to find these easily.

Before Microsoft made Bing, Google was more secretive about the scale needed to compete, with cloak and dagger code names and secret companies.

… but then when people took taxis to "Jet Stream LLC" or whatever, the driver just goes "oh you mean Google? lol".

The kind of threat who would be able to get past security would also be able to find the DCs.