Administration of subscription identifiers in a wireless communication network

A regulator system of a regulator for regulating administration of subscription identifiers associated with a wireless communication network, regulator system comprising:

• communication circuitry configured to communicatively connect the regulator system to an operator system of a wireless communication network operator and/or to an enterprise system of an enterprise;
• and
• processing circuitry configured to:
• receive, via the communication circuitry and from either the operator system or the enterprise system, a record that includes information about administration of a subscription identifier associated with the wireless communication network operator;
• verify whether administration of the subscription identifier as indicated by the record conforms to one or more rules governing administration of subscription identifiers, wherein to verify the processing circuitry is configured to determine whether the subscription identifier:
• has been administered with only one end user or end device in conformance with the one or more rules;
• and/or
• is within a set of subscription identifiers that is administrable according to the one or more rules;
• and/or
• has been administered within a time period that conforms to the one or more rules;
• and
• depending on said verifying, approve or reject the record for addition to a permissioned distributed database that is distributed at least in part between the regulator system and either the operator system or the enterprise system.