An extra domain package is used to increase the number of domain names that can be protected by Web Application Firewall (WAF). Each extra domain package supports one second-level domain and up to nine subdomains of the second-level domain. This topic describes extra domain packages and how to purchase an extra domain package.
Extra domain package
By default, a WAF instance can protect one second-level domain and up to nine subdomains
of the second-level domain. A subdomain can be a wildcard. For example, you can add
one second-level domain (example: example.com) and up to nine subdomains of the second-level domain (examples: www.example.com, *.example.com, mail.example.com, user.pay.example.com, and x.y.z.example.com).
- The number of second-level domains or subdomains that you want to protect is greater than the default number of second-level domains or subdomains that can be protected by WAF.
- You want to protect more than one second-level domain or the subdomains that you want
to protect are subsets of more than one second-level domain. For example, assume that
you have added the second-level domain
example.comor its subdomains to WAF, and you do not purchase an extra domain package. If you add another second-level domain, such asaliyun.com, or the subdomains of this second-level domain to WAF, the following message appears: The number of second-level domains reaches the upper limit. Upgrade WAF or purchase an extra domain package to increase the quota.
Purchase an extra domain package
You can purchase an extra domain package by upgrading your WAF instance. For more information, see Upgrade.