10 Best DNS Security Solutions in 2026 (Compared)

The Domain Name System (DNS) shows up in almost every attack chain. Phishing sites need domains, malware calls home over DNS, stolen data can leak out through tunneling, and attackers take over forgotten records to hijack your own subdomains. Read more on types of DNS attacks and DNS vulnerabilities if you want the background.

The catch is that DNS security solutions do two very different jobs. Some filter what your users look up; others watch the records and domains you own, and this list covers both.

What Are DNS Security Solutions?

DNS security solutions are tools that protect the Domain Name System from abuse. They either block malicious lookups before a connection is made, or they monitor and secure the DNS records and domains an organization owns.

How Did We Evaluate These DNS Security Solutions?

We checked every tool against the vendor’s own product, documentation, and pricing pages in October 2026. Vendor performance claims are treated as claims, not facts. We scored each tool on:

• Threat intelligence and blocking
• DNS tunneling and DGA detection
• DNSSEC support
• Record monitoring and alerts
• Deployment (cloud, on-prem, agent)
• Reporting and security information and event management (SIEM) export
• Managed service provider (MSP) support
• Pricing model

How Do These DNS Security Solutions Compare?

The 10 Best DNS Security Solutions

1. PowerDMARC (DNS record security and monitoring)

PowerDMARC protects the DNS records and domains you own. It does not filter end-user browsing, so think of it as a watchdog for your zone, not a resolver.

Key features:

• DNS Timeline logs changes to DMARC, SPF, DKIM, BIMI, MTA-STS, TLS-RPT, MX, A, NS, TXT, and CNAME records with before and after values, plus domain security score history.
• DNS Security Monitoring runs 46 automated daily checks, rolled into a 0 to 100 score and A to F grade. It covers the DNSSEC chain, CAA records, nameserver health, SSL certificate and domain expiry, transfer locks, and look-alike domains with active MX records.
• DNS alerts fire on record changes by email or webhook, and DNS Takeover Alerts check five dangling record types: NS, MX, CNAME, A/AAAA and SPF subdomain takeover.
• Hosted DMARC, SPF, DKIM, MTA-STS and BIMI, plus a free DNSSEC checker.
• Newer additions: an Email Deliverability Tester that seed-tests six mailbox providers and validates SPF, DKIM and DMARC, a built-in AI Agent (beta, English only), and an MCP server launched in May 2026 that connects Claude Desktop, Cursor or Claude Code to live account data.

Pros: One platform covers email authentication and DNS posture, and the MCP server lets you query live DNS and DMARC data from an AI assistant.

Cons: It is not a filtering resolver and does not detect tunneling or C2 traffic. DNS Takeover Alerts and the MCP server sit on Enterprise plans, and the AI Agent is still in beta.

Best for: Teams that need to know when DNS records change or break.

Pricing: Free plan for one personal domain, Basic at $8 to $250 a month, Enterprise on quote. 15-day trial.

2. Cisco Secure Access DNS Defense (formerly Cisco Umbrella)

Plenty of roundups still list Umbrella, but Cisco announced the end of sale for Umbrella DNS on September 1, 2026. The last day to order is January 31, 2027; renewals run to January 31, 2028, and support ends January 31, 2029. Cisco’s replacement is Secure Access DNS Defense.

Key features:

• Recursive DNS-layer security that blocks requests before a connection is made, across all ports and protocols.
• Threat intelligence from Cisco Talos, which powered Umbrella.
• Investigate the console and API for domain enrichment during incident work.
• Cisco says DNS Defense includes all Umbrella DNS features, with a path to the wider Secure Access platform.

Pros: Established vendor with a clear upgrade path to a full security service edge.

Cons: Existing customers face a migration, and Cisco does not publish prices.

Best for: Organizations already standardized on Cisco.

Pricing: Quote through Cisco or a partner.

3. Cloudflare Gateway (Zero Trust DNS filtering)

Gateway applies DNS policies using Cloudflare’s own threat intelligence. Allowed queries resolve through Cloudflare’s 1.1.1.1 resolver.

Key features:

• Security categories include DGA domains, DNS tunneling, new domains registered in the past 30 days, malware, and phishing.
• Block actions return 0.0.0.0 or ::, or send users to a custom block page.
• Filter offices through DNS locations, or cover roaming devices with the WARP client.
• Custom indicator feeds can be added to policies.

Pros: Free for up to 50 users, and tunneling and DGA categories are built into DNS policies.

Cons: Logs are kept for 24 hours on Free and 30 days on pay-as-you-go. Six months and Logpush need the Contract plan, and Log Explorer is an add-on at $1 per GB after 10 GB.

Best for: Small teams that want free filtering, and companies already on Cloudflare.

Pricing: Free up to 50 users, $7 per user per month pay-as-you-go, custom Contract.

4. Infoblox Threat Defense

Infoblox acts as your DNS resolver, so it sees every query from every device with or without an agent. It pairs protective DNS with DDI (DNS, DHCP, and IP address management).

Key features:

• Behavior-based DNS tunneling detection for exfiltration and C2.
• Zero-day DNS protection for newly registered domains.
• Lookalike domain monitoring, with takedown services for impersonating domains.
• Detection of threat distribution systems, not only single domains.
• Integration with NIOS DDI, which suits on-prem DNS estates.

Pros: Deep DNS-specific threat research and a detection mode you can try without changing infrastructure.

Cons: Pricing is token-based and sold by quote. Its head-to-head tests against Cisco are vendor-published, so run your own proof of concept.

Best for: Large hybrid enterprises with on-prem DNS.

Pricing: Token-based quote.

5. Palo Alto Networks Advanced DNS Security

This one lives inside the Palo Alto firewall stack. DNS Security needs PAN-OS 9.0 or later, and Advanced DNS Security needs 11.2 or later.

Key features:

• Machine learning tunnel detection based on n-gram frequency, entropy, and query rate.
• Detection of DNS rebinding, auto-generated domains, and malware hosts.
• Advanced DNS Security inspects changes in DNS responses to catch hijacked and misconfigured domains.
• Runs on NGFW, Prisma Access, VM-Series and CN-Series.

Pros: DNS enforcement sits in the firewall you already operate.

Cons: It requires a Threat Prevention or Advanced Threat Prevention subscription, and older PAN-OS versions only get base features.

Best for: Teams already running Palo Alto firewalls.

Pricing: Subscription add-on bought through Palo Alto or partners.

6. Akamai Secure Internet Access Enterprise

Akamai’s cloud DNS firewall (formerly Enterprise Threat Protector) covers users and IoT devices on and off the network. Threat intelligence comes from Akamai Connected Cloud, which Akamai says handles up to 11 trillion recursive DNS queries a day.

Key features:

• Blocks malicious recursive DNS requests and applies acceptable use policy categories, including guest Wi-Fi.
• Deploys by pointing DNS at the service, through IPsec tunnels or with a lightweight client.
• SIEM export for logs.
• No appliance to manage.

Pros: Quick to roll out globally with a DNS configuration change.

Cons: Akamai’s public pages focus on known-malicious and category blocking and do not document behavioral detection such as tunneling, so ask about it. Pricing is not public.

Best for: Enterprises that want a cloud DNS firewall without hardware.

Pricing: Quote.

7. DNSFilter

DNSFilter is a cloud filtering service with clear public pricing and strong MSP tooling.

Key features:

• Malicious domain protection, which DNSFilter says spots threats 10 days faster than other threat feeds.
• Content filtering with 40+ categories.
• Roaming clients for Windows, macOS, iOS, Android, and Chrome, plus a relay app and network deployment.
• SIEM data export, single sign-on and an MCP connector for AI assistants.

Pros: Transparent pricing, a 14-day free trial and a multi-tenant MSP program starting at $150 a month.

Cons: Each plan has a minimum spend ($240 a year on Core, $750 on Plus). Data export costs $0.25 per license per month, and devices off-network need the roaming client.

Best for: SMBs and MSPs.

Pricing: Core at $1.00 per license a month billed annually ($1.15 monthly), Plus at $2.25 ($2.50 monthly), Enterprise on request.

8. EfficientIP DNS Guardian

DNS Guardian protects the DNS servers themselves. It is a SOLIDserver appliance that inspects DNS transactions between the cache and the recursion layer.

Key features:

• Behavioral detection of DNS tunneling, data exfiltration, DGA malware, cache poisoning, and UDP floods.
• Adaptive countermeasures, including quarantine and rescue modes that keep answering legitimate clients under attack.
• Client Query Filtering and support for securing traffic with DoT and DoH.
• Pairs with the DNS Threat Pulse feed to catch zero-day domains.

Pros: Defends availability as well as data, which most filtering services do not.

Cons: It is an infrastructure project. EfficientIP’s own administrator course runs 18 hours over three days and assumes SOLIDserver training. Pricing is by quote.

Best for: Organizations that run their own recursive or authoritative DNS.

Pricing: Quote.

9. Quad9 (free protective DNS)

Quad9 is a free recursive resolver run by a Swiss non-profit. Point devices or a router at 9.9.9.9, and it blocks domains tied to malware, phishing, and scams.

Key features:

• Threat blocking built from aggregated intelligence feeds.
• DNSSEC validation.
• Encrypted DNS over DoT, DoH, and DNSCrypt.
• A policy of never logging end-user IP addresses.

Pros: Free, set up in minutes, and strong on privacy.

Cons: There is no reporting on what gets blocked, and Quad9’s own business page tells organizations that need it to look at commercial vendors.

Best for: Small offices, home networks, and a free baseline layer.

Pricing: Free.

10. NextDNS (SMB and prosumer)

NextDNS is a configurable cloud resolver that works across home, cellular, work, and public Wi-Fi networks.

Key features:

• 10+ protections: threat intelligence feeds, Google Safe Browsing, cryptojacking, DNS rebinding, IDN homographs, typosquatting, DGAs, newly registered domains and parked domains.
• DNSSEC validation, DoH and DoT.
• Logs kept from one hour to two years, or turned off, stored in the US, EU, UK or Switzerland.
• Custom allowlists and denylists, and unlimited configurations.

Pros: Generous free tier and low prices.

Cons: Past 300,000 queries a month, the free plan keeps resolving but stops blocking. The public pages do not list SSO, SIEM streaming, or multi-tenant MSP tools, and email support starts at Business.

Best for: Small businesses and technical individuals. Control D is a similar option; it prices SMB plans at $2 per endpoint per month in its own pricing guide.

Pricing: Free (300,000 queries a month), Pro $1.99 a month, Business $19.90 a month per 50 employees.

How Do You Choose the Right DNS Security Solution?

Start with the job you need done:

• Block threats for users: pick protective DNS such as Cloudflare Gateway, DNSFilter, Cisco, Akamai, Quad9, or NextDNS.
• Protect your own domains and records: use DNS monitoring like PowerDMARC.
• Large enterprise with on-prem DNS: look at Infoblox, EfficientIP, or Palo Alto if you run its firewalls.
• MSPs: pick multi-tenant tools, such as DNSFilter’s MSP program or PowerDMARC’s partner program.

Most teams end up combining one tool from each layer. The NIST SP 800-81r3 guide, finalized on March 19, 2026, treats DNS as both a policy enforcement point and a system whose data needs protecting with DNSSEC, which matches that two-layer setup.

Which DNS Security Best Practices Should You Pair With Any Tool?

Tools help, but the basics still matter. Work through the DNS security best practices checklist and cover these first:

• Turn on DNSSEC and test it with a DNSSEC checker
• Lock your domain at the registrar
• Require MFA on registrar and DNS accounts
• Monitor record changes
• Remove dangling records
• Use encrypted DNS (DoH or DoT)
• Restrict outbound DNS to approved resolvers

Summing Up 

The best DNS security solutions pair a protective DNS service for your users with monitoring for the records and domains you own. Start a free PowerDMARC trial to watch DNS record changes, then see the full history in DNS Timeline.

Frequently Asked Questions

What is the best DNS security solution?

It depends on the layer. Cloudflare Gateway, DNSFilter, and Cisco suit user protection; Infoblox and EfficientIP suit large DNS estates; and PowerDMARC suits record and domain monitoring.

Is DNS filtering the same as DNS security?

No. Filtering blocks bad lookups from your users. DNS security also covers the integrity of your own records, DNSSEC, and takeover risks.

Is there a free DNS security tool?

Yes. Quad9 is free, Cloudflare Gateway is free for up to 50 users, NextDNS includes 300,000 queries a month, and PowerDMARC has a free plan for one personal domain.

Does DNSSEC stop DNS attacks?

Only some. DNSSEC lets resolvers verify that answers are authentic, which helps against forged responses. It does not encrypt queries, block phishing domains, or stop attacks that start with a compromised registrar account.

How does DNS security protect email?

SPF, DKIM, DMARC, and BIMI all live in DNS records. If an attacker takes over a dangling record or subdomain, DMARC enforcement alone cannot stop it, so record monitoring closes that gap.