If your SQL query will return more than one record, you will need to place the fetchrow() call in a while loop.
my (@telephone);
my $i = 0;
my $count;
while (@aRow = $sth->fetchrow())
{
$telephone[$i] = @aRow[0];
$i++;
}
$count = $i;
# @telephone can now be used to build an html table
# to display all the telephone numbers in the "518"
# area code.