TLS Handshake Live Export Analysis with 10%-10% Trimmed Mean: 927 Providers

This dataset and accompanying analysis report present a robust statistical examination of TLS handshake latency across 927 web hosting providers, measured on 27 March 2026 from a live export comprising 9,210 observations. The primary estimator applied is the 10%–10% symmetric trimmed mean, which reduces the influence of extreme latency values in a heavily right-skewed distribution. The global trimmed mean converges to 57.31 ms (vs. 81.16 ms raw), with a provider-level cross-check yielding 57.52 ms — confirming the stability of the central estimate. Distributional checkpoints include P10 = 10 ms, P50 = 51 ms, and P90 = 192 ms (IQR = 66 ms). Provider-tier classification reveals that 34.1% of providers achieve sub-20 ms TLS negotiation times, indicative of CDN edge termination, while 4.4% exceed 300 ms, predominantly in East Asia and Oceania. Geographic segmentation covers Europe (n = 235), the Americas (n = 150), Asia (n = 26), and Oceania (n = 26), with notable mean–median divergence in the Americas suggesting bimodal CDN adoption patterns. Five providers recorded exclusive 0 ms values, flagged as potential session-resumption or measurement artifacts. This release is a single-snapshot descriptive study; no causal inference, geographic joins, or temporal trend analysis is performed. The analysis is bounded strictly to the supplied export file and is intended to support reproducible benchmarking of hosting infrastructure performance.