use strict;
my $str = '62.171.129.137
46.140.17.46
142.79.230.133
92.42.45.118
45.79.22.6
192.248.32.211
121.36.165.78
52.14.0.168
52.151.57.51
165.232.185.3
52.226.67.129
';
my $regex = qr/\b(?!0\.)(?!10\.)(?!100\.6[4-9]\.)(?!100\.[7-9]\d\.)(?!100\.1[0-1]\d\.)(?!100\.12[0-7]\.)(?!127\.)(?!169\.254\.)(?!172\.1[6-9]\.)(?!172\.2[0-9]\.)(?!172\.3[0-1]\.)(?!192\.0\.0\.)(?!192\.0\.2\.)(?!192\.88\.99\.)(?!192\.168\.)(?!198\.1[8-9]\.)(?!198\.51\.100\.)(?!203.0\.113\.)(?!22[4-9]\.)(?!23[0-9]\.)(?!24[0-9]\.)(?!25[0-5]\.)(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]))\b/mp;
if ( $str =~ /$regex/g ) {
print "Whole match is ${^MATCH} and its start/end positions can be obtained via \$-[0] and \$+[0]\n";
# print "Capture Group 1 is $1 and its start/end positions can be obtained via \$-[1] and \$+[1]\n";
# print "Capture Group 2 is $2 ... and so on\n";
}
# ${^POSTMATCH} and ${^PREMATCH} are also available with the use of '/p'
# Named capture groups can be called via $+{name}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Perl, please visit: http://perldoc.perl.org/perlre.html