Introducing hostname and ASN lists to simplify WAF rules creation

Cloudflare has introduced Custom Lists that enable users to create and manage lists of hostnames and Autonomous System Numbers (ASNs). This feature helps in efficiently managing traffic from ISPs and cloud providers, as well as running managed or custom rulesets only on specific hosts. Enterprise accounts can have up to 10 Custom Lists with a total of 10,000 items shared across all lists. In the near future, Cloudflare plans to introduce string lists that will allow users to create more complex use cases, such as blocking certain user agents or restricting access to specific URLs.