Certificate lifetime · Brazil (domains)

What share of domains in Brazil have certificates issued for longer than the 47-day maximum?

10.05%

10.05% of domains in Brazil (95% CI 6.6–15.01%), measured across 199 domains on 2026-10-01.

ready (≤47d): 89.95%longer than 47d: 10.05%
ready (≤47d) · 89.95%longer than 47d · 10.05%
Trend

Measured every Saturday since 2026-08-01 — 11 observations to date. Last measured 2026-10-01.

How this is measured

Tier 1. Validity window of the serving certificate. Denominator: has_web.

Passive measurement: a single DNS lookup, TLS handshake, or homepage GET per domain. Aggregate-only; no individual company is named. 95% Wilson confidence intervals. Population: domains sampled from the Common Crawl web graph, filtered to those that do email. Parked domains excluded. Snapshot: common-crawl-domain-stratified-c400-g2500-seed20260729.

Licensed CC BY 4.0 — reuse with attribution to Quiet Failures. Download: JSON · CSV.

Why it matters

The CA/Browser Forum is phasing certificate lifetimes down to 47 days. Any domain still on long-lived certificates has a manual renewal process that is about to break several times a year — a deadline-driven quiet failure that has not fired yet.

The same check, other segments

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