Certificate expiry · Denmark (domains)
What share of domains in Denmark have a TLS certificate expiring within 30 days, or expired?
3.59% of domains in Denmark (95% CI 1.83–6.92%), measured across 223 domains on 2026-08-12.
Measured every Wednesday since 2026-08-01 — 4 observations to date. Last measured 2026-08-12.
How this is measured
Tier 2, one TLS handshake; read not_after. 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 certificate nobody owns. Expiry is a scheduled, entirely predictable outage that still takes sites down constantly, because renewal was somebody's manual task and that somebody left.
The same check, other segments
- Vietnam (domains)18.75%
- Russia (domains)15.23%
- Austria (domains)10.78%
- Poland (domains)10.5%
- Argentina (domains)10.31%
- France medium companies10.16%
- Czechia (domains)10.04%
- France (domains)9.68%
Show the remaining 64 segments
- UK dormant companies9.52%
- Norway micro companies9.42%
- Hong Kong (domains)9.14%
- Taiwan (domains)8.73%
- the Philippines (domains)8.63%
- South Korea (domains)8.33%
- Slovakia (domains)8.13%
- Australia (domains)7.85%
- Peru (domains)7.84%
- Latvia (domains)7.59%
- Norway medium companies7.34%
- Germany (domains)7.34%
- Ireland (domains)7.33%
- Turkey (domains)7.31%
- New Zealand (domains)7.3%
- the UK (domains)7.27%
- Thailand (domains)7.22%
- Japan (domains)7.2%
- Norway small companies7.11%
- UK small companies7.07%
- Norway companies7.07%
- India (domains)7.06%
- Finland (domains)7.02%
- Belgium (domains)6.91%
- UK companies6.74%
- Norway (domains)6.52%
- UK newly-formed (no accounts filed) companies6.45%
- global domains6.43%
- France companies6.42%
- Switzerland (domains)6.32%
- UK medium & large companies6.25%
- Malaysia (domains)6.19%
- France micro companies6.16%
- the UAE (domains)5.96%
- Canada (domains)5.95%
- Spain (domains)5.8%
- the Netherlands (domains)5.73%
- the EU (domains)5.65%
- UK micro companies5.43%
- Lithuania (domains)5.38%
- Hungary (domains)5.38%
- Iceland (domains)5.16%
- Brazil (domains)5%
- France small companies4.88%
- Portugal (domains)4.8%
- Greece (domains)4.78%
- Singapore (domains)4.78%
- France large companies4.67%
- Luxembourg (domains)4.58%
- Indonesia (domains)4.51%
- Croatia (domains)4.43%
- Ukraine (domains)4.39%
- Mexico (domains)4.33%
- Slovenia (domains)4.14%
- Sweden (domains)3.9%
- Chile (domains)3.6%
- Romania (domains)3.59%
- Israel (domains)3.47%
- Italy (domains)3.46%
- Bulgaria (domains)3.11%
- South Africa (domains)3.08%
- Saudi Arabia (domains)3.04%
- Norway large companies2.86%
- Estonia (domains)1.5%