39Next, in order to determine whether, in the situation described in paragraph 37 of the present judgment, a dynamic IP address constitutes personal data within the meaning of Article 2(a) of Directive 96/45 in relation to an online media services provider, it must be ascertained whether such an IP address, registered by such a provider, may be treated as data relating to an ‘identifiable natural person’ where the additional data necessary in order to identify the user of a website that the services provider makes accessible to the public are held by that user’s internet service provider.
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