phone_processing_tools is distributed under GPL-3.0-or-later.

Its generated normalization data includes transliterations from Unidecode 1.4.0
(GPL-2.0-or-later) and symbol mappings from python-stdnum 2.2
(LGPL-2.1-or-later). Their copyright notices and license texts are retained
under licenses/. Unidecode is based on Text::Unidecode by Sean M. Burke.
Unidecode's Python adaptation is maintained by Tomaz Solc.
python-stdnum util.py: Copyright (C) 2012-2025 Arthur de Jong.

The phone numbering metadata exported from phonenumbers 9.0.40, its Google
phonemetadata.proto schema, and rlibphonenumber are Apache-2.0 licensed.
Google libphonenumber: Copyright (C) 2009 The Libphonenumber Authors.
rlibphonenumber: Copyright (C) 2025 Kashin Vladislav.
The Apache-2.0 license text is retained in licenses/libphonenumber.txt.

The exact upstream versions are recorded in data/normalization.json.
Generation is reproducible with tools/generate_data.py. The generated data,
generator, schema, lockfile and build configuration are included in source
distributions; they are part of the corresponding source for the wheels.
