403unlocker is a Windows DNS management and testing utility that helps users discover, benchmark, and configure DNS servers for improved accessibility and performance.
- Parallel DNS Latency Testing – Measure the response time of multiple DNS servers simultaneously with configurable concurrency.
- Geo-Restriction Bypass Testing – Verify hostname accessibility using custom DNS resolution and HTTP connectivity tests.
- One-Click DNS Configuration – Quickly set the selected DNS server as the active network adapter's primary or secondary DNS.
- Built-in Public DNS Collection – Includes a curated list of popular public DNS providers.
- PublicDNS Integration – Fetch and update the latest public DNS records from publicdns.xyz
- Custom DNS Management – Add, remove, and organize your own DNS entries.
- QR Code Sharing – Generate QR codes to transfer DNS configurations to mobile devices.
- Advanced Timeout Configuration – Configure independent timeout values for ping, DNS resolution, and HTTP requests.
- Background Operation – Optionally start with Windows and continue running silently in the system tray.
- Import & Export Support – Share DNS lists with others using JSON import and export.
- ِDownload & install .Net Framework 4.8
- Download & Install 403Unlocker
- Download & Install 403Unlocker
