Feature Request: Identify iCloud Private Relay Egress IPs in Results

[emeritaacuity0u]

Description

It would be highly useful for dnscheck.tools to include a feature that identifies iCloud Private Relay egress IP addresses within its DNS lookup results, labeling them explicitly as “iCloud Private Relay” for easy recognition. This feature would provide users with better insight into the IP ownership, especially as more traffic increasingly routes through iCloud Private Relay.

Proposed Solution

To implement this, dnscheck.tools could incorporate the iCloud Private Relay egress IPs from an existing, regularly updated list. There’s an excellent project on GitHub that maintains and generates these IP lists: iCloud Private Relay IP List by hroost. This repository offers pre-generated lists as well as scripts to self-host the generation of these IP lists, allowing for regular updates if needed.

By integrating these lists, dnscheck.tools could:

1. Identify IP addresses associated with iCloud Private Relay.
2. Label these IPs in the output results for clear, user-friendly information on IP ownership.

Benefits • Enhances user visibility into traffic routing through iCloud Private Relay. • Allows users to quickly identify Apple-owned egress IPs, making it easier to understand and verify DNS results. • Adds transparency and trustworthiness to the dnscheck.tools service by providing clearer insights into IP ownership.

[emeritaacuity0u]

If this idea takes off, the same could be done with other popular services that publish IP lists.