On-demand browser network diagnostics. Check IPv4 and IPv6 availability, WebRTC mDNS IP leaks, browser connection bandwidth, and multi-CDN latency.
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The Network Diagnostics tool performs on-demand, privacy-respecting client network connectivity testing, displaying your public IPv4 and native IPv6 addresses, ISP organization, WebRTC IP leak status (with RFC 8828 mDNS analysis), browser connection metrics, and multi-CDN latency benchmarks.
Runs strictly on-demand when the user clicks "Run Network Diagnostics" (no unprompted network calls on page load). Queries public IP endpoints (ipapi.co, api64.ipify.org) directly from the browser, creates an RTCPeerConnection with STUN to audit WebRTC candidate leaks, reads the browser Network Information API, and performs cache-busted fetch HEAD requests to Cloudflare, Google, AWS, and Fastly.
Run Diagnostic TestPublic IPv4: 203.0.113.42 | ISP: Cloudflare, Inc. | Location: Ashburn, VA, US | WebRTC Leak: None (VPN Secure) | CDN Latency: 18msValidates public routing, measures round-trip connection latency, and confirms WebRTC does not expose local or public network IPs.
WebRTC establishes peer-to-peer media streams, but historically leaked private LAN IPs (192.168.x.x) even over VPNs. Modern browsers implement RFC 8828 mDNS protection, replacing raw local IPs with anonymized .local hostnames to protect user privacy.
Many ISPs and home networks remain IPv4-only or operate dual-stack. Testing IPv4 and IPv6 endpoints independently reveals if your carrier supports native IPv6 connectivity or falls back to IPv4 NAT.
Diagnostics run directly from your browser session to public IP and DNS endpoints. Outlivo operates no intermediary proxy servers for these queries and does not record or store your diagnostic test results.