DMARC policy · UK companies
What share of UK companies have a DMARC policy that is absent or monitor-only (p=none)?
79.01% of UK companies (95% CI 77.41–80.54%), measured across 2,597 companies on 2026-08-17.
Measured every Monday since 2026-08-01 — 6 observations to date. Last measured 2026-08-17.
How this is measured
Tier 0. TXT lookup at _dmarc.<domain>; parse the p= tag. Denominator: has_mx.
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.
Check a specific domain against this control with the free Email authentication audit.
Why it matters
The flagship quiet failure. p=none is monitor mode — it publishes a record, generates reports, and instructs receivers to deliver forged mail anyway. It looks like DMARC in every compliance checklist and questionnaire while providing no protection. malformed is the same failure by accident.
Limits of this measurement
A domain may be mid-rollout in none deliberately; we measure the state, not intent.
The same check, other segments
- South Korea (domains)98.9%
- Japan (domains)95.49%
- Italy (domains)94.57%
- Russia (domains)94.02%
- Ukraine (domains)93.24%
- Hungary (domains)93.05%
- Lithuania (domains)92.59%
- Israel (domains)92.51%
Show the remaining 65 segments
- Vietnam (domains)92.12%
- Czechia (domains)91.91%
- Finland (domains)91.73%
- the US (domains)91.6%
- Austria (domains)91.39%
- Hong Kong (domains)90.87%
- Romania (domains)90.71%
- Canada (domains)90.23%
- Bulgaria (domains)90.13%
- France (domains)89.96%
- Chile (domains)89.96%
- Sweden (domains)89.96%
- Argentina (domains)89.95%
- Slovenia (domains)89.75%
- the UK (domains)89.34%
- Indonesia (domains)88.96%
- Taiwan (domains)88.83%
- UK micro companies88.74%
- Mexico (domains)88.7%
- New Zealand (domains)88.37%
- UK dormant companies88.21%
- Ireland (domains)88.17%
- India (domains)87.91%
- Australia (domains)87.41%
- the UAE (domains)87.35%
- Croatia (domains)86.94%
- Spain (domains)86.27%
- South Africa (domains)86.16%
- global domains86.12%
- Iceland (domains)85.9%
- Thailand (domains)85.9%
- Brazil (domains)85.41%
- Estonia (domains)85.3%
- Belgium (domains)85.08%
- France micro companies84.91%
- Latvia (domains)83.88%
- Peru (domains)83.55%
- Luxembourg (domains)83.27%
- Singapore (domains)83.12%
- Slovakia (domains)82.83%
- Denmark (domains)82.31%
- France small companies82.04%
- the EU (domains)81.7%
- UK small companies81.13%
- Malaysia (domains)80.27%
- Turkey (domains)80.22%
- Saudi Arabia (domains)78.87%
- Portugal (domains)78.65%
- UK newly-formed (no accounts filed) companies78.12%
- France companies76.58%
- Norway small companies76.45%
- the Philippines (domains)76.4%
- the Netherlands (domains)76.22%
- Norway micro companies75.56%
- Greece (domains)75.55%
- UK medium & large companies73.27%
- France medium companies72.5%
- Germany (domains)71.38%
- Poland (domains)70.87%
- Norway (domains)68.16%
- Switzerland (domains)66.1%
- Norway companies65.25%
- France large companies64.13%
- Norway medium companies55.34%
- Norway large companies49.18%