Article 66 of this Act may use numbering resources only on the basis of a decision allocating numbering resources by which the Agency allocates rights to their use. Article 65 (procedure for the issuing of a decision allocating numbering resources) (1) The Agency shall issue a decision allocating numbering resources in accordance with the numbering plan, under the provisions of the act governing the general administrative procedure and following a prior public invitation to tender procedures in cases determined by this Act. The Agency shall, in allocating numbering resources managed by the International Telecommunication Union (ITU), pay due regard to the procedures laid down in the appropriate recommendations of that Union. In allocating numbers whose use is harmonised under EU regulations, the Agency shall also take into account the procedures laid down in EU regulations and recommendations. (2) The Agency shall employ a public invitation to tender procedure only when it is established, with mutatis mutandis application of Article 36 of this Act, that efficient use of specific numbering resources (e.g. short numbers) can only be ensured by restricting the number of decisions issued allocating numbering resources. Undertakings that may allocate the numbering resources they acquire for use to their users under equal, cost-oriented and transparent conditions may take part in a public invitation to tender procedure. Other natural person or legal entities may only take part if they can prove that they require numbering resources in order to perform an activity for the public benefit under area legislation or EU regulations. (3) In this public invitation to tender procedure, the provisions of this Act governing public invitation to tender procedures for the allocation of specific radio frequencies shall be applied mutatis mutandis by the Agency. (4) The Agency shall decide on tenders by issuing one or more decisions allocating numbering resources, which it must in this case issue and deliver within 42 days of the expiry of the deadline for the submission of tenders. It must make its decision public at the same time. Article 66 (issuing of a decision allocating numbering resources) (1) An undertaking or other natural person or legal entity may submit an application for a decision allocating numbering resources if they can prove that they require numbering resources in order to perform an activity for the public benefit under area legislation or EU regulations relating to numbering resources. (2) The application referred to in the preceding paragraph must contain the information that the Agency requires to maintain an official register of beneficiaries of decisions allocating numbering resources and to oversee the use of numbering resources, in particular: 1. name, address and tax number (natural persons); 2. company name, registered office, tax number and an indication of the legal representative (legal entities); 3. proof that the applicant is entitled to be allocated numbering resources;, 4. details on the type, quantity and purpose of use of the numbering resources they wish to acquire; 5. a project that includes a plan of the assessment of needs for the next three years, if the applicant is requesting a larger block of numbers; 6. the grounds on which the applicant can prove that the allocated quantity of numbering