It's not clear whether this is the right checksum.

# http://www.google.nl/search?q=cache:8m1zKNYrEO0J:www.enschede.nl/nieuw/projecten/aanbesteding/integratie/pve%2520Bijlage%25207.5.doc+Sofi+nummer+formaat&hl=en&start=56&lr=lang_en|lang_nl&ie=UTF-8 pattern name => [qw /SEN Netherlands SoFi/], create => sub { # 9 digits (d1 d2 d3 d4 d5 d6 d7 d8 d9) # 9*d1 + 8*d2 + 7*d3 + 6*d4 + 5*d5 + 4*d6 + 3*d7 + 2*d8 + 1*d9 # == 0 mod 11. qr /([0-9]{9})(?(?{par11 ($^N)})|(?!))/; } ;

NAME

Regexp::Common::SEN -- provide regexes for Social-Economical Numbers.

SYNOPSIS

 use Regexp::Common qw /SEN/;

 while (<>) {
     /^$RE{SEN}{USA}{SSN}$/    and  print "Social Security Number\n";
 }

DESCRIPTION

Please consult the manual of Regexp::Common for a general description of the works of this interface.

Do not use this module directly, but load it via Regexp::Common.

$RE{SEN}{USA}{SSN}{-sep}

Returns a pattern that matches an American Social Security Number (SSN). SSNs consist of three groups of numbers, separated by a hypen (-). This pattern only checks for a valid structure, that is, it validates whether a number is valid SSN, was a valid SSN, or maybe a valid SSN in the future. There are almost a billion possible SSNs, and about 400 million are in use, or have been in use.

If -sep=P is specified, the pattern P is used as the separator between the groups of numbers.

Under -keep (see Regexp::Common):

$1

captures the entire SSN.

$2

captures the first group of digits (the area number).

$3

captures the second group of digits (the group number).

$4

captures the third group of digits (the serial number).

HISTORY

 $Log: SEN.pm,v $
 Revision 2.101  2004/06/09 21:52:14  abigail
 Force 2.101 version

 Revision 2.1  2004/06/09 21:50:14  abigail
 Initial checkin

SEE ALSO

Regexp::Common for a general description of how to use this interface.

AUTHORS

Damian Conway and Abigail.

MAINTAINANCE

This package is maintained by Abigail (regexp-common@abigail.nl).

BUGS AND IRRITATIONS

Bound to be plenty.

For a start, there are many common regexes missing. Send them in to regexp-common@abigail.nl.

COPYRIGHT

          Copyright (c) 2001 - 2003, Damian Conway and Abigail.
        All Rights Reserved. This module is free software. It may
        be used, redistributed and/or modified under the terms of
                        the Perl Artistic License
            (see http://www.perl.com/perl/misc/Artistic.html)