In you ARS Digit Conversion table you can grab the 7-digit numbers, delete 0 digits, and insert the 1+NPA.
Kevin
ARS DIGIT CONVERSION TABLE
Location: all Percent Full: 1
Matching Replacement ANI
Pattern Min Max Del String Net Conv Req
2 7 7 0 1973 ars y n
3 7 7 0 1973 ars y n
4 7 7 0 1973 ars y n
5 7 7 0 1973 ars y n
6 7 7 0 1973 ars y n
7 7 7 0 1973 ars y n
8 7 7 0 1973 ars y n
9 7 7 0 1973 ars y n