This file is indexed.

/usr/share/isdn/rate-default.dat is in isdnlog-data 1:3.25+dfsg1-3.3ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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V:0.01-default [2001/10/10]

U:%.3f UNITS

P:10            .
B:1234
D:x

# 1 currency unit per minute
Z:1		.
A:*
T:*/*=1.00/60