A regulator system (24) of a regulator regulates administration of subscription identifiers. The regulator system (24) is configured to receive, from either an operator system (10) of a wireless communication network operator or an enterprise system of an enterprise, a record that includes information about administration of a subscription identifier associated with the wireless communication network operator. The regulator system (24) is also configured to verify whether administration of the subscription identifier as indicated by the record conforms to one or more rules (34) governing administration of subscription identifiers. The regulator system (24) is further configured to, depending on the verification, approve or reject the record for addition to a permissioned distributed database (26) (e.g., a permissioned blockchain) that is distributed at least in part between the regulator system (24) and either the operator system (10) or the enterprise system.