@tripleee A normalized version,
{{'18106199194', '8106199194'}}
, of that pattern is already on the number blacklist. You can use
!!/bisect-number 8106-199-194(?#IS NorAm)
to determine which entries on the number lists match that pattern, which would tell you: Matched by
8106-199-194(?#NO NorAm)
on
line 1693 of blacklisted_numbers.txt: 8106-199-194 found verbatim