Extra domain packages are used to increase the number of domains that a Web Application Firewall (WAF) instance can protect. Each extra domain package protects one second-level domain and nine of its subdomains. This topic describes what extra domain packages are and how to purchase them.
Overview
By default, a WAF instance can protect one second-level domain and up to nine of its subdomains, which can include a wildcard domain. For example, you can add one second-level domain, such as example.com, and up to nine related subdomains, such as www.example.com, *.example.com, mail.example.com, user.pay.example.com, or x.y.z.example.com.
You must purchase an extra domain package to protect more domains with your WAF instance. This is required in the following scenarios:
The number of second-level domains or subdomains to protect exceeds the default limit.
You need to protect domains that belong to more than one second-level domain. For example, if you have already added
example.comor its subdomains and then try to addaliyun.com(another second-level domain) or its subdomains, you receive a quota limit message, such as: "The number of second-level domains is limited. Upgrade the service and purchase an extra domain package separately."
Purchase an extra domain package
The purchase process depends on whether you already have a WAF instance. For more information, see upgrade and downgrade.