netstat -an | perl -lne'
    $h{$1}++ if /((?:TIME|FIN|EST|SYN|CLO)\S*)/;
    END { print "$a = $b" while ($a, $b) = each %h }
'
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(You'll probably need to backslash the linefeeds if not on bash or zsh.)

Makeshifts last the longest.