# grep 'AhrefsBot/7.0' /var/log/apache2/acces*log /var/log/apache2/access*log.1 | sed 's/:/ /g' | awk '{print $2}' | sort -n | uniq | awk '{print "IN REJECT -source " $1 " -p tcp -log notice # AhrefsBot/7.0"}' 
IN REJECT -source 5.39.109.169 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 5.39.109.174 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 5.39.109.180 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 5.39.109.181 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 15.235.96.223 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 15.235.96.40 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 15.235.98.182 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 51.161.37.204 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 51.222.168.185 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 51.222.95.23 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 51.75.236.146 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 51.75.236.147 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.0.189 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.0.233 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.136.183 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.136.50 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.203.75 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 54.39.6.188 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 92.222.104.216 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 92.222.104.218 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 92.222.108.121 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 92.222.108.96 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 142.44.220.189 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 142.44.228.248 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 142.44.233.107 -p tcp -log notice # AhrefsBot/7.0
IN REJECT -source 167.114.139.173 -p tcp -log notice # AhrefsBot/7.0