To be more specific…
HLR (Home location Register)is the Home location for a subscriber in and has the subscriber prifile information. Upon registration the profile gets downloaded into the VLR. The HLR can be standalone and can serve multiple Switching centers (MSCs) whereas VLR is generally integrated with every MSC. In any network (Home or visited) calls would be handled by respective VLR, once the subscriber is registered and the profile has been dowloaded from the HLR.