comparison · DNS resolvers
ControlD vs Quad9
Both are listed in DNS resolvers. The table below pulls directly from each service’s data sheet; see each entry for sourcing.
| Field | ControlD | Quad9 |
|---|---|---|
| KYC | optional KYC | no KYC |
| Category | DNS resolvers | DNS resolvers |
| Jurisdiction | Canada (operator-disclosed) | Switzerland (operator-disclosed, non-profit) |
| Payment methods | card, crypto | — |
| Fiat on-ramp | no | no |
| Custodial | no | no |
| Open source | no | no |
| Founded | 2020 | 2016 |
| Last verified | Jan 1, 2026 | Jan 1, 2026 |
ControlD — summary
ControlD is the most-featured public resolver after NextDNS.
- + Per-endpoint filtering and "redirect" rules.
- + Crypto payment accepted on paid tiers.
- − Account-bound for custom flows.
- − Operator is the same group as Windscribe — review the broader ad-incentive context.
- − Facts need re-verification by operator (last seeded 2026-01).
Quad9 — summary
Quad9 is the Swiss non-profit no-account public resolver with malware-domain blocking on by default.
- + Swiss non-profit operator.
- + Blocks known-malicious domains using shared threat-intel feeds.
- + DoH/DoT supported; anycast deployment.
- − Threat-intel blocking can flag false positives.
- − Single-trust-anchor operator model.
- − Facts need re-verification by operator (last seeded 2026-01).
When to choose which
Treat this section as heuristic. Privacy properties depend on how you use the service, not just which one you pick.
- Choose ControlD if per-endpoint filtering and "redirect" rules..
- Choose Quad9 if swiss non-profit operator..
- Either way, re-check the entry’s last verified date — the DNS resolvers category churns.
Mentioned in (combined)
Pages on the site that reference ControlD, Quad9, or both.
Quick answers
Country pages
Compared as of .