X-Pcrew-Ip-Organization
The HTTP X-Pcrew-Ip-Organization response header is an unofficial header used by the ParkingCrew domain monetization platform to identify the network organization associated with the requesting client's IP address.
Note
The "X-" naming convention for HTTP headers, "X" referring to "experimental", has been deprecated and needs to be transitioned to the formal naming convention for HTTP headers.
Usage
ParkingCrew operates a domain monetization platform serving advertising content on parked or unused domains. The platform classifies incoming traffic to distinguish legitimate human visitors from automated requests, bots, and traffic originating from hosting providers or data centers.
The X-Pcrew-Ip-Organization header reflects the outcome of the classification step. ParkingCrew performs IP reputation lookups against network databases to determine which organization owns or operates the IP address block the request came from. The resolved organization name is attached to the response as a diagnostic signal. This value feeds into ParkingCrew's traffic quality filtering and works alongside X-Pcrew-Blocked-Reason, which records the outcome when traffic is filtered.
Values
Organization name
The value is a human-readable string identifying the ISP, hosting provider, or network operator associated with the requesting IP address. Common values include cloud provider names and ISP names.
Example
A request from a DigitalOcean IP address is identified as originating from DigitalOcean's network. ParkingCrew records the organization in the response header.
X-Pcrew-Ip-Organization: Digital Ocean
A request from a residential ISP reflects the ISP's organization name as the resolved value.
X-Pcrew-Ip-Organization: Comcast Cable Communications
Both PCREW HTTP headers often appear together, with the organization informing the blocking decision.
X-Pcrew-Ip-Organization: Digital Ocean
X-Pcrew-Blocked-Reason: hosting network
Takeaway
The X-Pcrew-Ip-Organization header exposes the network organization ParkingCrew resolved for the requesting IP address. The value feeds into traffic quality decisions, particularly for filtering requests from hosting providers and data center networks.