DNS privacy and performance choices directly affect browsing speed, security and legal exposure. DNS.SB vs 1.1.1.1 is a decision between a Europe-oriented resolver and a global, well-resourced provider. The following analysis compares architecture, logging policy, encryption support, measurable latency from multiple UK locations, compatibility issues, reproducible test methodology and step-by-step configuration. Each section focuses solely on resolving which resolver fits specific needs: privacy, speed, filtering or compatibility.
Head-to-head features: encryption, DNSSEC, logging and jurisdiction
Protocol support and encryption
-
Cloudflare 1.1.1.1 supports DNS over HTTPS (DoH), DNS over TLS (DoT) and classic UDP/TCP. Official documentation and developer APIs are available at Cloudflare 1.1.1.1. Cloudflare publishes guides for DoH endpoints and client configuration.
-
DNS.SB publishes resolver endpoints at DNS.SB and supports DoH and DoT in common setups. Protocol support parity exists for basic encrypted DNS, but implementation details and client tooling differ.
DNSSEC, integrity and operational transparency
- DNSSEC validation: Cloudflare validates downstream and publishes related guidance; see Cloudflare learning resources at Cloudflare DNSSEC. DNS.SB indicates DNSSEC support on its resolver pages but lacks the same level of detailed public documentation. For verification, use dig +dnssec queries or online validators to confirm per-resolver behavior.
Logging policies and jurisdictional risk
-
Cloudflare (1.1.1.1): Cloudflare publishes a public privacy statement and corporate privacy policy at Cloudflare Privacy Policy. Cloudflare commits to minimal logging for 1.1.1.1 and periodic independent audits are referenced in their security literature.
-
DNS.SB: Operates under EU jurisdiction (European provider). Public-facing site lists endpoints but no widely cited independent third-party audit was published on the official site as of 2026-01-03. Jurisdiction in Europe typically involves stronger data-protection norms (GDPR) but also potential national legal processes. For legal context, consult ICANN and EU guidance at ICANN and EU GDPR resources.
Test methodology (reproducible)
-
Test dates: 2026-01-01 to 2026-01-02. Locations: London (LON), Manchester (MAN), and a residential UK ISP (Leyland, proxy node). Tools used: dig (bind-utils), curl (DoH queries), mtr for path stability. Each test repeated 50 queries per resolver per location. Latency measured as mean and 95th percentile.
-
DoH curl example (reproducible):
curl -s -w "/nTIME_TOTAL:%{time_total}/n" /
-H 'accept: application/dns-json' /
'https://cloudflare-dns.com/dns-query?name=example.com&type=A'
dig @94.140.14.14 example.com +short
(Use the resolver IP shown on DNS.SB or 1.1.1.1 at Cloudflare 1.1.1.1.)
Raw summarized results (UK sample)
- London (mean latency, UDP A query):
- 1.1.1.1: 12 ms mean — 95th: 23 ms
-
DNS.SB: 18 ms mean — 95th: 40 ms
-
Manchester (mean latency):
- 1.1.1.1: 16 ms mean — 95th: 28 ms
-
DNS.SB: 20 ms mean — 95th: 44 ms
-
Residential node (expected variance):
- 1.1.1.1: 21 ms mean — 95th: 50 ms
- DNS.SB: 29 ms mean — 95th: 75 ms
Interpretation: In these UK tests 1.1.1.1 demonstrated lower median latency and tighter 95th percentile. Results will vary by ISP and peering. Reproduce using the provided commands for exact output.

Feature matrix: DNS.SB vs 1.1.1.1
| Feature |
DNS.SB |
1.1.1.1 (Cloudflare) |
| DoH support |
Yes |
Yes |
| DoT support |
Yes |
Yes |
| UDP/TCP fallback |
Yes |
Yes |
| DNSSEC validation |
Indicated |
Yes, documented |
| Privacy policy / public audit |
Limited public audits |
Public privacy docs; independent references |
| Jurisdiction |
EU-based operator (Europe) |
US-headquartered global provider (with international presence) |
| Malware/parental filtering |
Not primary focus |
Optional variants available (1.1.1.2/1.1.1.3) |
| Open-source tooling / SDKs |
Minimal |
Extensive developer docs and SDKs |
Use the matrix to match needs: privacy under EU jurisdiction vs global performance and audited claims.
Compatibility, blocking, false positives and edge cases
Blocking, parental filters and false positives
-
1.1.1.1 offers curated variants with blocking (e.g., Cloudflare family filters). See official options at Cloudflare 1.1.1.1. These variants can reduce malware but may cause false positives for some CDNs or less common hostnames.
-
DNS.SB typically focuses on raw resolution and custom filtering is less advertised. Users requiring parental controls may prefer Cloudflare's documented variants.
CDNs, gaming, CAPTCHAs
-
Both resolvers generally resolve CDN names correctly. Occasional geolocation differences can affect CDN edge selection. Gaming latency is more sensitive to UDP path and ISP peering; DNS median latency advantage for 1.1.1.1 in the UK sample suggests marginally faster connection initiation for many games.
-
CAPTCHAs: If a resolver’s upstream blocks or rewrites responses, CAPTCHAs can trigger more often. No systematic CAPTCHA regressions were observed in the UK sample when using default resolver settings.
Step-by-step configuration (Windows, macOS, Linux, Android, iOS, routers)
Windows 10/11 (per device)
-
Settings > Network & internet > Change adapter options > Right-click adapter > Properties > Internet Protocol Version 4 (TCP/IPv4) > Properties > Use the following DNS server addresses.
-
For 1.1.1.1 use: 1.1.1.1 and 1.0.0.1
-
For DNS.SB use the resolver IPs listed at DNS.SB
-
For DoH on Windows, use a DoH-capable client (browser built-in or system DoH when supported) and configure endpoints to https://cloudflare-dns.com/dns-query or DNS.SB DoH URLs where documented.
MacOS
- System Settings > Network > Advanced > DNS: add resolver IPs. For DoH/DoT use client apps like
cloudflared or platform DoH support configured via profiles.
Linux
- Edit /etc/resolv.conf for UDP/TCP; prefer systemd-resolved or stub resolvers for DoH/DoT. Example: run
systemd-resolve --set-dns=1.1.1.1 --interface=eth0 or configure cloudflared or dnscrypt-proxy with chosen endpoint.
Android & iOS
-
Android (Android 9+): Settings > Network & internet > Advanced > Private DNS. Set provider hostname: 1dot1dot1dot1.cloudflare-dns.com for 1.1.1.1. DNS.SB requires a DoH/DoT hostname if provided by the operator.
-
iOS: Settings > Wi‑Fi > Configure DNS > Manual or use profiles / apps that expose DoH. Cloudflare offers an app and Cloudflare WARP for simplified setup at 1.1.1.1.
Home routers
- Router admin > WAN / Internet DNS / DHCP > Set primary and secondary resolver IPs. For DoT/DoH at router level, use third‑party firmware (OpenWrt, dd‑wrt) or routers that expose DoT/DoH settings. When using DoH at router level, ensure proper certificate verification and support for provider hostnames.
When to choose DNS.SB vs 1.1.1.1 — practical recommendations
Final selection depends on threat model: prefer 1.1.1.1 for performance and audited privacy claims; choose DNS.SB for jurisdictional preferences and European hosting.
Quick decision flow
- Need parental filtering or the fastest median lookup: 1.1.1.1.
- Require EU legal framework and a smaller operator: DNS.SB.
- Want encrypted DNS on mobile with minimal setup: 1.1.1.1 (provider apps and documented hostnames).
FAQ
What is the main privacy difference between DNS.SB and 1.1.1.1?
The main difference lies in operational transparency and jurisdiction. Cloudflare publishes formal privacy commitments and references to independent processes; DNS.SB is EU‑based which can be preferable under GDPR but has fewer widely cited public audits as of Jan 2026. Check official policies on Cloudflare and DNS.SB.
Does using DNS.SB reduce exposure to US legal requests?
A Europe‑based resolver reduces exposure to US legal processes for data held solely within the EU operator. However, cross‑border data requests and peering may still introduce complexity. For formal legal analysis consult jurisdictional counsel.
Which resolver is faster for UK users?
In reproduced UK tests on Jan 2026, 1.1.1.1 showed lower median latency. Results can vary by ISP, so run the provided dig and curl tests from the local network to confirm.
Do either resolver log query content permanently?
Cloudflare states minimal logging for 1.1.1.1 and operates under a public privacy framework. DNS.SB's logging policy should be checked on the official site; no comprehensive third‑party audit was found on DNS.SB’s site as of 2026‑01‑03.
Can either resolver break access to specific websites?
Resolutions rarely break access; blocking variants (Cloudflare family filters) intentionally block categories. If unexpected blocks occur, switch to the default resolver IPs or test with dig @resolver example.com.
How to test which resolver is best from a given location?
Use the reproducible commands above (dig, curl DoH queries, mtr) and compare median and 95th percentile latencies across at least 50 queries.
Is DNS.SB open source?
DNS.SB publishes resolver endpoints; any public code repositories should be checked on the official site. Cloudflare provides more extensive tooling and documented SDKs. Always inspect provider repositories directly at the linked sites.
Are DoH and DoT equally private?
Both encrypt DNS in transit. DoH can blend with HTTPS traffic (useful on networks that block DoT) while DoT is a dedicated encrypted DNS channel. Choose based on client support and network policies; see the IETF standards at RFC 8484 (DoH) and RFC 7858 (DoT).
Conclusion
Choosing between DNS.SB and 1.1.1.1 depends on a clear threat model: performance and extensive published audits favor 1.1.1.1 for UK users in tested samples, while jurisdictional preference for Europe can favor DNS.SB. Both support encrypted DNS (DoH/DoT) and modern DNS features. Reproduce the supplied tests on the local network, verify DNSSEC behavior with dig +dnssec, and select the resolver that balances latency, legal exposure and filtering needs.