@Vickel A normalized version,
{{'256704892479'}}
, of that pattern is already on the number blacklist. You can use
!!/bisect-number +256704892479
to determine which entries on the number lists match that pattern, which would tell you: Matched by
+256704892479
on
line 2014 of blacklisted_numbers.txt: +256704892479 found verbatim