What is HPLMN (Home public land mobile network)?

Home Public Land Mobile Network distinguishes the Public Land Mobile Network in which the profile of the user is held. Users roaming to different networks will get subscription data from the HPLMN. Each SIM card has an HPLMN, where the endorser profile is arranged. HLR is the node in HPLMN, where a new subscriber has all subscription data and the sim card continues to update its location to the HLR during roaming. The home network has message and billing nodes.