Nameserver resilience · Norway large companies
What share of Norway large companies have all nameservers on a single provider?
93.99% of Norway large companies (95% CI 89.56–96.61%), measured across 183 companies on 2026-08-11.
Measured every Tuesday since 2026-08-01 — 2 observations to date. Last measured 2026-08-11.
How this is measured
Tier 0. NS lookup, map each host to a provider, count distinct providers. Denominator: any.
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: brreg-norway-per600-seed20260730.
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
Single-provider DNS is a single point of total failure — when that provider has an outage the domain disappears entirely (web, mail, everything). Redundancy here looks present ("we have four nameservers") while all four share one fate.
Limits of this measurement
Low severity; single-provider is a reasonable choice for a small company, so this is context on concentration risk rather than a defect.
The same check, other segments
- Peru (domains)100%
- New Zealand (domains)99.61%
- Malaysia (domains)99.55%
- UK dormant companies99.49%
- Russia (domains)99.46%
- India (domains)99.45%
- Taiwan (domains)99.44%
- Vietnam (domains)99.39%
Show the remaining 65 segments
- Australia (domains)99.26%
- UK micro companies99.13%
- Argentina (domains)99.04%
- the UK (domains)98.98%
- Turkey (domains)98.88%
- Norway micro companies98.87%
- Saudi Arabia (domains)98.87%
- Ireland (domains)98.85%
- the Philippines (domains)98.76%
- Mexico (domains)98.74%
- Brazil (domains)98.71%
- Israel (domains)98.68%
- Belgium (domains)98.64%
- Hong Kong (domains)98.34%
- the Netherlands (domains)98.25%
- UK medium & large companies98.15%
- Canada (domains)98.14%
- Indonesia (domains)98.05%
- UK companies98.04%
- Latvia (domains)97.93%
- UK newly-formed (no accounts filed) companies97.92%
- Portugal (domains)97.86%
- France (domains)97.77%
- Ukraine (domains)97.75%
- Bulgaria (domains)97.7%
- Denmark (domains)97.69%
- Norway medium companies97.63%
- the UAE (domains)97.63%
- Chile (domains)97.59%
- Japan (domains)97.57%
- Norway small companies97.52%
- Spain (domains)97.42%
- UK small companies97.38%
- Sweden (domains)97.38%
- Norway (domains)97.38%
- Norway companies97.25%
- Croatia (domains)97.25%
- France micro companies97.17%
- Slovenia (domains)97.17%
- Greece (domains)97.08%
- France small companies96.73%
- Switzerland (domains)95.93%
- the US (domains)95.8%
- Singapore (domains)95.78%
- France medium companies95.5%
- Germany (domains)95.5%
- Lithuania (domains)94.95%
- Thailand (domains)94.87%
- Czechia (domains)94.85%
- Austria (domains)94.7%
- France companies94.41%
- Finland (domains)93.98%
- global domains93.97%
- Poland (domains)93.48%
- Slovakia (domains)93.27%
- Luxembourg (domains)92.36%
- the EU (domains)91.96%
- Hungary (domains)91.39%
- France large companies86.96%
- Romania (domains)86.25%
- Iceland (domains)80.34%
- Italy (domains)64.86%
- South Korea (domains)64.84%
- Estonia (domains)55.56%
- South Africa (domains)51.56%