@Cow A normalized version,
{{'7708022519'}}
, of that pattern is already on the number blacklist. You can use
!!/bisect-number 7708-0225-19(?# no noram)
to determine which entries on the number lists match that pattern, which would tell you: Matched by
770_80+22_519(?# no noram)
on
line 3929 of blacklisted_numbers.txt: 7708022519 found normalized