To get a count on the last most hit VHosts on your Apache server:
replace (-10000) with however much you want to go back
tail -10000 /var/log/apache2/access.log | awk -F ‘”‘ ‘{print $4}’ | awk -F ‘/’ ‘{print $3}’ | sort | uniq -c
To Get a Count on all the IPs that hit your server in the past X tail
tail -10000 /var/log/apache2/access.log | awk -F ‘-‘ ‘{print $1 }’ | sort | uniq -c