Certificate expiry · Spain (domains)
What share of domains in Spain have a TLS certificate expiring within 30 days, or expired?
7.77% of domains in Spain (95% CI 4.84–12.24%), measured across 206 domains on 2026-10-01.
Measured every Wednesday since 2026-08-01 — 11 observations to date. Last measured 2026-10-01.
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
- Russia (domains)16.77%
- Vietnam (domains)16.18%
- Lithuania (domains)13.43%
- France micro companies12.2%
- the UK (domains)11.59%
- Norway (domains)11.59%
- France medium companies11.11%
- Norway large companies10.79%
Show the remaining 63 segments
- Taiwan (domains)10.77%
- Italy (domains)10.59%
- Czechia (domains)10.46%
- Poland (domains)10.19%
- Portugal (domains)10.16%
- South Korea (domains)9.87%
- France companies9.82%
- France (domains)9.72%
- Slovakia (domains)9.64%
- UK dormant companies9.59%
- Japan (domains)9.52%
- Austria (domains)9.49%
- Argentina (domains)9.23%
- UK medium & large companies9.04%
- Germany (domains)8.95%
- France small companies8.88%
- Ireland (domains)8.79%
- UK micro companies8.77%
- Turkey (domains)8.73%
- Norway companies8.68%
- Iceland (domains)8.61%
- Norway micro companies8.58%
- UK companies8.53%
- the EU (domains)8.43%
- Norway small companies8.37%
- UK small companies8.17%
- Norway medium companies7.76%
- Greece (domains)7.72%
- Hong Kong (domains)7.65%
- Thailand (domains)7.46%
- Canada (domains)7.29%
- Latvia (domains)7.14%
- global domains7.12%
- Hungary (domains)7.02%
- the Philippines (domains)6.9%
- Australia (domains)6.85%
- Luxembourg (domains)6.69%
- Israel (domains)6.67%
- UK newly-formed (no accounts filed) companies6.51%
- the Netherlands (domains)6.2%
- Indonesia (domains)5.97%
- Peru (domains)5.85%
- Belgium (domains)5.51%
- Mexico (domains)5.29%
- Brazil (domains)5.08%
- Chile (domains)4.89%
- Estonia (domains)4.89%
- Finland (domains)4.53%
- Switzerland (domains)4.53%
- Romania (domains)4.42%
- India (domains)4.17%
- the UAE (domains)4.07%
- Malaysia (domains)4.04%
- New Zealand (domains)3.81%
- Singapore (domains)3.7%
- Slovenia (domains)3.45%
- Bulgaria (domains)3.45%
- Sweden (domains)3.33%
- Denmark (domains)3.04%
- South Africa (domains)3.03%
- Ukraine (domains)2.99%
- Croatia (domains)2.9%
- Saudi Arabia (domains)2.51%