@VLAZ A normalized version,
{{'5109757941', '15109757941'}}
, of that pattern is already on the number blacklist. You can use
!!/bisect-number 1 (510)-975-7941
to determine which entries on the number lists match that pattern, which would tell you: Matched by
+1 (510)-975-7941
on
line 4013 of blacklisted_numbers.txt: 5109757941 found normalized; 15109757941 found normalized