Risky Domains
Some subdomains can generate unusually high request volumes when used with a CDN or security proxy. This typically happens because these subdomains are responsible for serving dynamic content, APIs, or large numbers of static assets.
To ensure optimal performance and stability, we recommend reviewing the following subdomain types before enabling PhantomGuard CDN protection.
Common High-Traffic Subdomains
The following subdomains are commonly associated with elevated traffic patterns:
| Subdomain | Typical Use Case |
|---|---|
blog | Content-heavy websites and CMS blog systems |
shop | E-commerce storefronts |
store | Online stores and product catalogs |
api | Public or internal APIs |
app | Web applications or dashboards |
cdn | Asset delivery or external CDN origin |
static | Static assets such as JS, CSS, fonts, and images |
These subdomains often generate a large number of requests, especially on busy websites.
If you need to enable protection for one of these subdomains, please contact our support team so we can review your configuration and unlock it if appropriate.