subscriber made a request to receive this information electronically to an electronic mail address indicated for this purpose by the subscriber or by similar remote communications means. The information about the above modifications is not a modification to the agreement terms and conditions. 5. A provider of publicly available telecommunications services to subscribers that are not parties to a written agreement shall publicly announce information about changes to the name, address or seat of that service provider without delay. The information about the above modifications is not a modification to the agreement terms and conditions specified in the rules and regulations for the provision of publicly available telecommunications services. Article 60b. 1. A subscriber, excluding a subscriber using publicly available telephone services provided by a public pay telephone or by dialling a network access code of a service provider and excluding a subscriber of prepaid services, namely broadcasting or rebroadcasting of television programmes by terrestrial, cable or satellite means, shall provide the service provider with the following data: 1) in the case of a subscriber being a natural person: a) name and surname b) the PESEL number, if available, or the name, series and number of the identity document and passport number or residence card number in the case of a foreigner who is not a citizen of a Member State or of the Swiss Confederation; 2) in the case of a subscriber other than a natural person: a) name b) REGON number or tax identification number (NIP), or a number in the National Court Register, or business activities register, or another relevant register. 2. A subscriber shall provide the data referred to in paragraph 1, at the conclusion of the contract in written or electronic form. A subscriber who is a party to a contract for the provision of prepaid services on a public telecommunications network shall provide the data referred to in paragraph 1 to the service provider. Data may also be provided by electronic means or otherwise as determined by the service provider. 3. The service provider shall commence the provision of telecommunications services: 1) not earlier than after confirming the compliance of the data given by the subscriber with the data specified in paragraph 1: a) point 1, contained in the document confirming the identity of the subscriber being a natural person, b) point 2, contained in the relevant register, or 2) after the provision by the subscriber of the data specified in paragraph 1 and its confirmation by electronic means using: a) electronic identification means used for authentication in an IT system of a domestic bank, b) data verified by qualified certificates for electronic signature, c) electronic identification means for authentication in an IT system of the telecommunications service provider if the subscriber’s data has already been verified in connection with another contract, d) electronic identification means for authentication in an IT system that satisfies the requirements laid down in provisions issued pursuant to Article 20a paragraph 3 of the Act of 17 February 2005 on the IT development of the bodies performing public tasks (Journal of Laws of 2017, item 570). 4. The confirmation, referred to in paragraph 3 (1), may also be made by the service provider through a third party acting on behalf of the service provider.