use strict;
use warnings;
use Tie::File;
use Data::Dumper;

my @file;
my @key = qw(name address phone fax);
tie @file, 'Tie::File', 'address.txt' or die $!;

my @record = map {
   my %hash;
   @hash{@key} = @file[$_..$_+4-1];
   \%hash;
} range(0,$#file,4);

print Dumper \@record;

sub range {grep!(($_-$_[0])%($_[2]||1)),$_[0]..$_[1]}