Vault-Tec Vault information is a holotape in Fallout 3.
Location
This holodisk is added to the Lone Wanderer's Pip-Boy inventory after accessing the Vault-Tec mainframe, located in the mainframe room of the Administration section of the Vault-Tec headquarters building.
Transcript
You've downloaded the locations and access codes to Vaults 87, 92, 101, 106 and 108.