A method implemented by a user equipment, the method comprising: selecting a first wireless-communication cell; receiving, from a first base station providing the first wireless-communication cell, a first system information block, the first SIB including a first entry, the first entry comprising a first PLMN identifier associated with the first wireless-communication cell and indicating a type of core network of the first wireless-communication cell; determining the absence of the first PLMN identifier in a listing of one or more PLMN identifiers stored within the user equipment; responsive to determining the absence of the first PLMN identifier in the listing of one or more PLMN identifiers: selecting a second wireless-communication cell; receiving, from a second base station providing the second wireless-communication cell, a second SIB, the second SIB including a second entry, the second entry comprising a second PLMN identifier associated with the second wireless-communication cell and indicating a type of core network of the second wireless-communication cell; confirming the selection of the second wireless-communication cell, wherein the confirming comprises: determining the presence of the second PLMN identifier associated with the second wireless-communication cell in the listing of one or more PLMN identifiers stored within the user equipment; and responsive to determining the presence of the second PLMN identifier in the listing of one or more PLMN identifiers: transmitting an attach request message to the second base station providing the second wireless-communication cell. selecting a first wireless-communication cell; receiving, from a first base station providing the first wireless-communication cell, a first system information block, the first SIB including a first entry, the first entry comprising a first PLMN identifier associated with the first wireless-communication cell and indicating a type of core network of the first wireless-communication cell; determining the absence of the first PLMN identifier in a listing of one or more PLMN identifiers stored within the user equipment; responsive to determining the absence of the first PLMN identifier in the listing of one or more PLMN identifiers: selecting a second wireless-communication cell; receiving, from a second base station providing the second wireless-communication cell, a second SIB, the second SIB including a second entry, the second entry comprising a second PLMN identifier associated with the second wireless-communication cell and indicating a type of core network of the second wireless-communication cell; selecting a second wireless-communication cell; receiving, from a second base station providing the second wireless-communication cell, a second SIB, the second SIB including a second entry, the second entry comprising a second PLMN identifier associated with the second wireless-communication cell and indicating a type of core network of the second wireless-communication cell; confirming the selection of the second wireless-communication cell, wherein the confirming comprises: determining the presence of the second PLMN identifier associated with the second wireless-communication cell in the listing of one or more PLMN identifiers stored within the user equipment; and responsive to determining the presence of the second PLMN identifier in the listing of one or more PLMN identifiers: transmitting an attach request message to the second base station providing the second wireless-communication cell. determining the presence of the second PLMN identifier associated with the second wireless-communication cell in the listing of one or more PLMN identifiers stored within the user equipment; and responsive to determining the presence of the second PLMN identifier in the listing of one or more PLMN identifiers: transmitting an attach request message to the second base station providing the second wireless-communication cell.