Aggressive Wordfence settings is one way. Brute force protection: Firewall –> Manage Brute Force Protection
Manage Brute Force Protection
Blocking IPs and ranges in .htaccess another one. Search for: “How to Block an IP address range using the .htaccess file“
Deny from 2409:8c20:b281:14::105
Deny from 2a06:98c0:3600::103
Deny from 5.183.130.33
Deny from 8.219.150.20
Deny from 8.219.237.178
Deny from 34.56.32.154
Deny from 35.238.239.151
Deny from 35.245.50.77
Deny from 45.142.253.216
Deny from 45.82.15.54
Deny from 46.8.15.92
Deny from 46.29.169.37
Deny from 47.237.107.41
Deny from 90.150.83.4
Deny from 91.106.37.198
Deny from 101.36.113.124
Deny from 149.56.160.210
Deny from 159.223.1.87
Deny from 162.158.239.79
Deny from 170.64.237.218
Deny from 172.69.136.197
Deny from 172.71.164.118
Deny from 178.211.57.76
Deny from 185.36.81.55
Deny from 185.242.177.19
Deny from 206.189.131.159
Deny from 223.113.128.132