@Ethan A normalized version,
{{'19572886345', '9572886345'}}
, of that pattern is already on the number blacklist. You can use
!!/bisect-number 9572886345(?#IS NorAm)
to determine which entries on the number lists match that pattern, which would tell you: Matched by
9572886345(?#IS NorAm)
on
line 892 of blacklisted_numbers.txt: 9572886345 found verbatim