Vultr.com / Constant.com / Choopa LLC: Block Them and BE Safe
An other constant source of attacks: AS20473 – The Constant Company, LLC
Vultr.com, Vultrusercontent.com, Constant.com, Choopa.com are all the very same company.
This network has been identified as highly polluted and hazardous. It is recommended for webmasters to block ASN (20473) by utilizing their firewall settings or the Cloudflare AS blocking feature. Alternatively, if these options are not available, consider using a security plugin to block the hostname ‘*.vultrusercontent.com’.
The above is just a sample of an IP that hit us 4008 times in 3 days, with all kind of WordPress probes and attacks.