Certificate lifetime · UK small companies
What share of UK small companies have certificates issued for longer than the 47-day maximum?
30.03% of UK small companies (95% CI 26.74–33.54%), measured across 696 companies on 2026-10-01.
Measured every Saturday since 2026-08-01 — 10 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: national company registries (Companies House, Brreg, SIRENE), sampled by size band and resolved to email-active domains. Parked domains excluded. Snapshot: uk-companies-house-per600-seed20260728.
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
- South Korea (domains)63.09%
- Germany (domains)42.19%
- Italy (domains)37.18%
- UK dormant companies33.1%
- UK micro companies30.77%
- UK companies29.43%
- UK medium & large companies28.79%
- Spain (domains)27.94%
Show the remaining 63 segments
- Japan (domains)26.83%
- UK newly-formed (no accounts filed) companies25.44%
- Poland (domains)24.88%
- the UK (domains)24.38%
- France medium companies23.58%
- Austria (domains)19.86%
- the EU (domains)19.55%
- Taiwan (domains)19.38%
- France companies19.26%
- Lithuania (domains)18.87%
- Hong Kong (domains)18.46%
- France small companies18.18%
- Norway large companies17.14%
- Vietnam (domains)17.04%
- Canada (domains)16.84%
- the Philippines (domains)14.69%
- the Netherlands (domains)13.67%
- global domains13.51%
- Russia (domains)13.07%
- Mexico (domains)12.86%
- Luxembourg (domains)12.61%
- Turkey (domains)12.55%
- Norway medium companies12.27%
- New Zealand (domains)12.07%
- Slovakia (domains)12.01%
- Thailand (domains)12%
- France micro companies11.98%
- Estonia (domains)11.94%
- Peru (domains)11.71%
- Argentina (domains)11.5%
- France (domains)11.06%
- Czechia (domains)10.92%
- the UAE (domains)10.91%
- Slovenia (domains)10.57%
- Ireland (domains)10.46%
- Norway companies10.25%
- Bulgaria (domains)10.18%
- India (domains)10.06%
- Brazil (domains)10.05%
- Hungary (domains)9.57%
- Norway micro companies8.62%
- Singapore (domains)8.41%
- Saudi Arabia (domains)8.37%
- Malaysia (domains)8.16%
- Greece (domains)8.14%
- Portugal (domains)7.91%
- Switzerland (domains)7.84%
- Iceland (domains)7.58%
- Australia (domains)7.29%
- Latvia (domains)7.17%
- Norway (domains)7.14%
- Denmark (domains)7.14%
- Finland (domains)7.08%
- Israel (domains)6.67%
- Croatia (domains)6.57%
- South Africa (domains)5.68%
- Ukraine (domains)5.53%
- Norway small companies5.5%
- Indonesia (domains)5.22%
- Belgium (domains)5.15%
- Romania (domains)4.88%
- Sweden (domains)3.86%
- Chile (domains)3.11%