Overview

NetworkTests.com uses advanced, browser-based techniques to provide accurate insight into real-world network performance. Each test is designed to measure different aspects of connectivity using methods that closely reflect how modern applications transmit data.

UDP Packet Loss & Latency

Our platform uses WebRTC DataChannels configured for unreliable and unordered delivery to closely emulate UDP behavior. Unlike reliable TCP-based channels, packets that are lost are not retransmitted — just like real UDP traffic.

By sending sequentially numbered packets, we can precisely detect which packets were lost and calculate performance consistency.

TCP Latency

TCP latency is measured using precise HTTPS request timing to major global cloud providers, including Google, Cloudflare, Amazon, and Microsoft.

This approach captures the complete connection setup time, including DNS resolution, TCP handshake, and TLS negotiation. Together, these provide a realistic view of how quickly your device can establish secure connections to widely used internet services.

Note: The first request to each target includes DNS and TLS setup time. Subsequent requests reuse the connection, showing only round-trip latency. We discard the first sample and use subsequent measurements for accuracy.

Hop-by-Hop Analysis

For reverse path diagnostics, our servers perform hop-by-hop analysis toward your connection using MTR. This process uses your public IP address and the NAT-mapped UDP port discovered during WebRTC ICE negotiation.

By traversing the network path in this way, we can estimate latency, jitter, and packet loss across each intermediate hop from our server to your internet edge. This provides deeper visibility into where performance degradation may be occurring along the route.