Research-Use-Only Terms — German Name Frequencies by State & District (D-Info 2005)

This dataset contains ONLY aggregate, k-anonymized name-frequency statistics
derived from the proprietary "D-Info 2005" telephone-directory CD-ROM (klickTel,
data status 02.06.2005). No individual records, addresses, or phone numbers are
included.

Permitted:
  - Non-commercial scientific/academic research.
  - Redistribution and modification for that purpose, WITH attribution to this
    dataset and a citation to the source (D-Info 2005, klickTel).

Not permitted:
  - Commercial use of any kind.
  - Any attempt to re-identify individuals or to combine these aggregates with
    other data in order to single out a person.

No rights over the source:
  These terms cover ONLY the derived aggregate statistics published here. The
  underlying directory database remains subject to the rights of klickTel and to
  the EU "sui generis" database right (in Germany, sections 87a ff. UrhG). This
  dataset grants no rights whatsoever over the original D-Info 2005 database, and
  is not endorsed by or affiliated with klickTel.

No warranty:
  The data is provided "as is", without warranty of any kind. It reflects 2005
  telephone-line holders (a proxy for name frequency, not a census) and may
  contain errors. Users are responsible for compliance with applicable law
  (including data-protection and database-right law) in their jurisdiction.