3. in the case of natural persons, their date of birth,
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4. in the case of fixed-network connections, also the address of the line,
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5. in cases in which both a mobile telephone connection and a mobile end user device are provided, the device number of this device and
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6. the date when the contract commences;
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when the date of the end of the contract is known, it shall also be stored. Sentence
1 also applies where the data are not entered in subscriber directories (§ 104). The
duty of storage without undue delay under sentence 1 applies with regard to the data under sentence 1 nos. 1 and 2, with the necessary modifications, to a person
which commercially provides a publicly accessible email service and in doing so collects data under sentence 1 nos. 1 and 2; in this case, the data under sentence 1
no. 1 shall be replaced by the identifiers of the email accounts and the subscriber
under sentence 1 no. 2 shall be replaced by the owner of the email account. If the
person subject to a duty under sentence 1 or sentence 3 obtains knowledge of a
change, that person must correct the data without undue delay; in this connection,
the person subject to a duty under sentence 1 must collect and store data not yet
previously collected, insofar as it is able to collect the data without particular effort.
The form of data storage for the information procedure under § 113 is optional.
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(2) If the service provider under subsection 1 sentence 1 or sentence 3 uses a sales
partner, the sales partner must collect the data under subsection 1 sentences 1 and
3 subject to the requirements set out there, and must transmit these data and the
data collected under § 95 to the service provider without undue delay; subsection 1
sentence 2 applies with the necessary modifications. Sentence 1 also applies to data on changes insofar as the sales partner obtains knowledge of them in the ordinary course of business.
24
…
25
(4) The data shall be deleted at the end of the calendar year following the end of the
contractual relationship.
26
…
27
§ 112 TKG
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(1) A person who provides telecommunications services for the public shall without
undue delay store the data collected under § 111.1 sentences 1, 3 and 4 and 111.2
in customer databases in which the following must also be entered: telephone numbers and sets of telephone numbers which are given to other providers of telecommunications services for further marketing or other use, and in the case of ported
telephone numbers the current identifier. The correction and deletion of the data
stored in the customer databases is governed by § 111.1 sentences 4 and § 111.4
with the necessary modifications. In cases of ported telephone numbers, the telephone number and the related identifier shall be deleted only after the end of the
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