Privacy-Focused DNS Providers Comparison 2026: Privacy

ISP-provided DNS servers (8.8.8.8, 1.1.1.1 defaults) log your browsing. Even with HTTPS, DNS queries reveal which domains you visit, when, and from which IP. A privacy-focused DNS provider hides this from ISPs, governments, and advertisers.

This guide compares five privacy DNS providers: NextDNS, Quad9, Mullvad DNS, AdGuard DNS, and Cloudflare 1.1.1.1. We focus on logging policies, filtering capabilities, configuration options, and real-world setup on routers and devices.

NextDNS

NextDNS is a DNS filtering service with privacy focus, parental controls, and analytics. All DNS queries are encrypted (DoH/DoT) and logged client-side only (encrypted on their servers).

Privacy Model:

DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT) supported
Encrypted logs (server cannot decrypt without your key)
No-log option available (premium, deletes logs after 24 hours)
IP masking (requests show as NextDNS data center, not your ISP)
No DNS data sold to third parties

Pricing:

Free: 300,000 queries/month, basic analytics, 1 profile
Pro: $1.99/month (unlimited queries, 10 profiles, advanced analytics)
Pro Plus: $9.99/month (team features, custom rules, export reports)

Features:

Ad blocking (built-in lists)
Malware/phishing protection (Threat Intelligence)
Parental controls (categories: gambling, adult content, etc.)
Custom block/allow lists
Query analytics dashboard
Bypass lists (whitelist domains)

Configuration Examples:

macOS (System Preferences):

1. System Settings → Network → Wi-Fi → Details
2. DNS Servers → Click [+]
3. Add: 45.90.28.0 (NextDNS)
4. Click "OK" and save

Verify:
$ nslookup google.com 45.90.28.0
Server: 45.90.28.0
Address: 45.90.28.0#53

Non-authoritative answer:
Name: google.com
Address: 142.251.47.14

Linux (Systemd-resolved):

# Edit /etc/systemd/resolved.conf
sudo nano /etc/systemd/resolved.conf

# Add:
DNS=45.90.28.0 45.90.29.0
DNSSECd=true
DNSOverTLS=yes

# Restart
sudo systemctl restart systemd-resolved

# Verify
resolvectl status

Router Setup (OpenWrt):

1. Login to router admin (192.168.1.1)
2. Network → DHCP and DNS
3. DNS Forwarder Servers: 45.90.28.0
4. Rebind Protection: Enable
5. Save & Apply

Verify (from any device on network):
$ nslookup google.com
Server: 192.168.1.1

iPhone (Manual Profile):

Download NextDNS iOS config from nextdns.io
Settings → General → VPN & Device Management
Tap NextDNS profile
Install
Confirm passcode

Android:

Download NextDNS app (Google Play)
Login or enable "Approve" mode
Launch VPN
Select filtering level

Strengths:

Privacy by default (encrypted logs)
Excellent analytics (see which domains requested)
Flexible filtering (ad-blocking, malware, parental controls)
Affordable ($1.99/month)
Works on routers, phones, laptops

Weaknesses:

Relies on account login (not truly anonymous)
Query logs visible if account compromised
Slower than direct ISP DNS (slight latency)

Quad9

Quad9 is a nonprofit DNS service focused on security and privacy. It blocks known malicious and phishing domains.

Privacy Model:

No query logging (zero-log policy, verified)
No personal data collection
No data selling
DNSSEC validation built-in
Threat Intelligence database (blocks malware domains)

Pricing:

Free (nonprofit model)
No commercial tier

Features:

Malware/phishing blocking (primary focus)
Ad/tracker blocking (optional)
DNSSEC validation
Geographic fallback (if primary fails)
Performance-optimized

Configuration Examples:

macOS:

System Settings → Network → Wi-Fi → Details → DNS
Add: 9.9.9.9 (primary), 149.112.112.112 (secondary)

Linux:

# /etc/systemd/resolved.conf
DNS=9.9.9.9 149.112.112.112
DNSSECd=true

Router (OpenWrt):

Network → DHCP/DNS
DNS Servers: 9.9.9.9

Windows:

Settings → Network & Internet → Change adapter options
Right-click Ethernet/Wi-Fi → Properties
IPv4 Properties → DNS Servers
Preferred: 9.9.9.9
Alternate: 149.112.112.112

Android (DNS over TLS):

Settings → Network & Internet → Advanced → Private DNS
Enter: dns.quad9.net
Toggle on

iOS:

Settings → Wi-Fi → [Network] → Configure DNS
DNS Servers: 9.9.9.9, 149.112.112.112

Strengths:

True zero-log (nonprofit, verified)
Free tier is complete (no “free lite” limitations)
Strong security (malware blocking)
Non-profit (no financial incentive to log)
DNSSEC support

Weaknesses:

Limited filtering (security-focused, no customization)
No parental controls
No user analytics dashboard
Slower blocking performance vs. NextDNS

Mullvad DNS

Mullvad is a privacy-first VPN and DNS provider. DNS is offered standalone (without VPN) for privacy-focused users.

Privacy Model:

No logging policy (technically verified)
No user identification (no accounts)
DNSSEC validation
Ad/tracker blocking (optional)
Free Tier is full-featured (no upsell)

Pricing:

Free (fully featured, no commercial tier)

Features:

Ad/tracker blocking
Malware protection
Parental controls (family-friendly filtering)
DNSSEC validation
No tracking
Open source components

Configuration Examples:

macOS/Linux:

# macOS
# System Settings → Network → Wi-Fi → Details → DNS
# Add: 194.242.2.2 (standard)
# or: 194.242.2.3 (ad-blocking)

# Linux /etc/systemd/resolved.conf
DNS=194.242.2.2
# For ad-blocking:
# DNS=194.242.2.3

Windows:

Control Panel → Network → Internet → Change adapter options
Right-click connection → Properties → IPv4
DNS: 194.242.2.2 (standard)
     194.242.2.3 (ad-blocking)

Router Setup:

Router admin → DHCP/DNS → Forwarder
DNS: 194.242.2.3 (ad-blocking, recommended)

iOS (DNS over TLS):

Settings → Wi-Fi → [Network] → Configure DNS
DNS Server: dns.mullvad.net

Android:

Settings → Network & Internet → Private DNS
DNS: dns.mullvad.net

Docker/Kubernetes:

# Example: DNS pod with Mullvad
apiVersion: v1
kind: Pod
metadata:
  name: dns-resolver
spec:
  dnsPolicy: None
  dnsConfig:
    nameservers:
      - 194.242.2.3  # Mullvad ad-blocking
    searches:
      - example.com
  containers:
  - name: app
    image: myapp:latest

Strengths:

Completely free (no commercial tier or upsell)
No user accounts (truly anonymous)
Good filtering defaults (ad-blocking, malware)
Open source (auditability)
Parental controls included

Weaknesses:

No per-user customization (no dashboard)
Limited filtering options
Slower than commercial services
No analytics (you can’t see what’s blocked)

AdGuard DNS

AdGuard is a commercial DNS filtering service with focus on filtering control and customization.

Privacy Model:

Query logging (optional, can be disabled)
No data selling
DNSSEC support
Optional ad/tracker/malware filtering

Pricing:

Free: 3 profiles, basic filtering
AdGuard Pro: $2.99/month (unlimited profiles, custom rules, analytics)
AdGuard Family: $3.99/month (parental controls, safe search enforcement)

Features:

DNS filtering (ads, trackers, malware, phishing)
Custom block/allow lists (300+ built-in lists)
Per-device rules (iPhone, Android, router)
Query analytics (if enabled)
Parental controls
Safe search enforcement

Configuration Examples:

macOS:

System Settings → Network → Wi-Fi → Details
DNS Servers:
  Default: 94.140.14.14, 94.140.15.15
  Family: 94.140.14.15, 94.140.15.16
  Non-filtering: 94.140.14.140, 94.140.15.140

Linux:

# /etc/resolv.conf (if not using systemd)
nameserver 94.140.14.14
nameserver 94.140.15.15

# Or systemd:
# /etc/systemd/resolved.conf
DNS=94.140.14.14 94.140.15.15

Router Setup:

LuCI Admin → Network → DHCP/DNS
DNS Forwarder: 94.140.14.14

iPhone (VPN Configuration):

Download AdGuard VPN app
Start VPN (uses DNS filtering)
Settings → VPN → Configure
Select filtering level

Android (VPN Mode):

Install AdGuard app
Protection on
Settings → Filtering
Toggle filter categories

CLI Test (Linux):

# Test AdGuard DNS
dig @94.140.14.14 example.com

# Query response shows filtered status
; <<>> DiG 9.18.1 <<>> @94.140.14.14 example.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57381
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;example.com.         IN  A
example.com.      60  IN  A   93.184.216.34

Strengths:

Good filtering control (customizable lists)
Affordable ($2.99-3.99/month)
Multiple filter profiles
Analytics dashboard
Parental controls strong

Weaknesses:

Logging by default (must disable)
Proprietary (less transparent than Mullvad)
Requires account login

Cloudflare 1.1.1.1

Cloudflare operates the largest public DNS service (1.1.1.1). It emphasizes speed and security.

Privacy Model:

Query logging for 24 hours (deleted after 24h, encrypted)
DNSSEC validation
No query data sold
Threat Intelligence (malware blocking)

Pricing:

Free (1.1.1.1 + 1.0.0.1)
Cloudflare Teams (Enterprise): Custom (advanced filtering, CASB)

Features:

DNS filtering (malware, phishing)
Parental controls (1.1.1.3 + 1.0.0.3)
Performance optimized
IPv6 support
DNSSEC validation

Configuration Examples:

macOS:

System Settings → Network → Wi-Fi → Details
DNS Servers:
  Default: 1.1.1.1, 1.0.0.1
  Malware: 1.1.1.2, 1.0.0.2
  Family: 1.1.1.3, 1.0.0.3

Linux:

# /etc/systemd/resolved.conf
DNS=1.1.1.1 1.0.0.1
DNSSECd=true

Windows:

Settings → Network → Change adapter options
Ethernet Properties → IPv4 → DNS
1.1.1.1 (primary), 1.0.0.1 (secondary)

Router (OpenWrt):

LuCI → Network → DHCP/DNS
Forwarder: 1.1.1.1, 1.0.0.1

Docker:

# docker-compose.yml
services:
  app:
    dns:
      - 1.1.1.1
      - 1.0.0.1

iOS:

Settings → Wi-Fi → [Network] → Configure DNS
DNS Server: 1.1.1.1

Strengths:

Fastest DNS (global CDN, optimized)
Free tier is competitive
Easy setup (1.1.1.1 is memorable)
Strong filtering options
Enterprise option (Teams)

Weaknesses:

Logs queries for 24 hours (not zero-log)
Requires account for Teams features
Limited customization (free tier)

Comparison Table

Provider	Logging	Cost	Filtering	Analytics	Customization	Best For
NextDNS	Encrypted	$1.99/mo	Excellent	Yes	Excellent	Power users, analytics
Quad9	Zero-log	Free	Security	No	None	Security-first, nonprofit
Mullvad	Zero-log	Free	Good	No	Limited	Privacy purists, free
AdGuard	Optional	$2.99/mo	Excellent	Yes	Good	Filtering, parental controls
Cloudflare	24h	Free	Good	No	Limited	Performance, simplicity

Router Configuration Checklist

Step 1: Access Router Admin Panel

# Find router IP
ipconfig getifaddr en0  # macOS
ip route show          # Linux
route -A inet          # Windows

# Typical: 192.168.1.1 or 192.168.0.1
# Login: admin/admin or admin/[password]

Step 2: Configure DNS

Most routers: Network → DHCP/DNS → DNS Servers

Enter chosen provider:

NextDNS: 45.90.28.0
Quad9: 9.9.9.9
Mullvad: 194.242.2.3
AdGuard: 94.140.14.14
Cloudflare: 1.1.1.1

Step 3: Save and Reboot

Restart router to apply changes.

Step 4: Verify on Devices

nslookup google.com
# Should return DNS server IP from your chosen provider

Comparison: Device Configuration Difficulty

Device	NextDNS	Quad9	Mullvad	AdGuard	Cloudflare
macOS	Easy (Settings)	Easy (Settings)	Easy (Settings)	Easy (Settings)	Easy (Settings)
Linux	Medium (resolv.conf)	Medium	Medium	Medium	Medium
iPhone	Medium (Profile)	Easy (DoT)	Easy (DoT)	Hard (VPN)	Easy (DoT)
Android	Easy (App)	Easy (Private DNS)	Easy (Private DNS)	Medium (App)	Easy (Private DNS)
Router	Easy	Easy	Easy	Easy	Easy
Windows	Medium (Control Panel)	Medium	Easy (Private DNS)	Medium (VPN)	Medium

Privacy Comparison: Detailed

Factor	NextDNS	Quad9	Mullvad	AdGuard	Cloudflare
Query logging	Encrypted, 24h	None	None	Encrypted, 7d	Encrypted, 24h
Account required	Yes	No	No	Yes	No (free)
Data sold	No	No	No	No	No
Jurisdiction	Switzerland	USA/Canada	Sweden	Cyprus	USA
Audit published	No	Yes	Partial	No	No
Open source	Partial	No	Partial	No	Partial
Zero-log	No	Yes	Yes	No	No

Recommendation

Maximum Privacy (Zero-Log): Quad9 or Mullvad (both free, truly no logs)

Best Filtering + Privacy: NextDNS ($1.99/month, analytics, customization)

Budget Option: Mullvad (free, good filtering, zero-log)

Simplicity + Speed: Cloudflare 1.1.1.1 (free, fast, setup in 60 seconds)

Parental Controls: AdGuard Family ($3.99/month) or NextDNS Pro ($1.99/month)

Recommendation Flow:

Start with Quad9 (zero-log, free, 80% of users happy)
If need analytics/customization → NextDNS ($1.99)
If need parental controls → AdGuard or NextDNS
If need maximum speed → Cloudflare 1.1.1.1

Built by theluckystrike — More at zovo.one

NextDNS

Quad9

Mullvad DNS

AdGuard DNS

Cloudflare 1.1.1.1

Comparison Table

Router Configuration Checklist

Comparison: Device Configuration Difficulty

Privacy Comparison: Detailed

Recommendation

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