@JeffSchaller A normalized version,
{{'7815000083'}}
, of that pattern is already on the number watchlist. You can use
!!/bisect-number 7815+0000+83
to determine which entries on the number lists match that pattern, which would tell you: Matched by
7815000083(?#IS NorAm)
on
line 3163 of watched_numbers.txt: 7815000083 found normalized