/usr/lib/x86_64-linux-gnu/libphonenumber.so.7 is in libphonenumber7 7.1.0-5+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libphonenumber.so.7.0
/usr/lib/x86_64-linux-gnu/libphonenumber.so.7.0