#!/usr/local/bin/perl -w
$cnip = $ENV{'QUERY_STRING'};
print "\n                      Look Up NPANXX Info";
print "\n                   ==============================";
print "\n                   Please enter NPANXX:_______\b\b\b\b\b\b\b ";
chomp($cnip=<STDIN>);
if($cnip =~ /\d{6}/){

    @datb = `cat tech3 | grep $cnip`; #You could do this a a file open and grep the contents... it would be more portable and perlyer :)
    @cnip = $cnip;
    #printing the info
    foreach $datb (@datb){
        @cnip = split (\/\:/, $datb);
        print "\n                ========================================\n";

        print "                NPANXX   Line   Switch MSR&CUSTGP VMX";
        print "
                $cnip $cnip[1]  $cnip[2]    $cnip[3] $cnip[4]    $cnip[5]";
        print "                ========================================\n\n";
    }

    @datb = `cat tech3 | grep $cnip`;
    @cnip = $cnip;
#printing the info
    foreach $datb (@datb){
        @cnip = split (\/\:/, $datb);
        print "\n                ========================================\n";

        print "                NPANXX   Line   Switch MSR&CUSTGP VMX";
        print "
                $cnip $cnip[1]  $cnip[2]    $cnip[3] $cnip[4]    $cnip[5]";
        print "                ========================================\n\n";
    }
} else { ### you has this left bracket way up under your 'if'
    print "\nValid NPANXX not entered!\n";
}