# Attack Surface Scan vs Puredns: side-by-side comparison (2026)

[Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Attack Surface Scan](https://cybersectools.com/companies/attack-surface-scan). [Puredns](https://cybersectools.com/tools/puredns) is a free [external attack surface management](https://cybersectools.com/categories/external-asm) solution. Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more.

## Side-by-side comparison

| | Attack Surface Scan | Puredns |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | External Attack Surface Management | External Attack Surface Management |
| Verified | No | No |
| Deployment type | Cloud | On-Premises |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 1,982 |
| Last commit | – | Nov 2024 |
| Company | Attack Surface Scan | – |
| Headquarters | – | – |

### Use cases and capabilities

| | Attack Surface Scan | Puredns |
|---|---|---|
| DNS Security | Yes | – |
| TLS | Yes | – |
| SSL | Yes | – |
| Subdomain Enumeration | Yes | – |
| Security Scanning | Yes | – |
| Alerting | Yes | – |
| Fingerprinting | Yes | – |
| DMARC | Yes | – |
| SPF | Yes | – |
| Security Reporting | Yes | – |
| Security Research | – | Yes |

### Core features

**Attack Surface Scan**

10 features listed. Sign in on the page to see them.

**Puredns**

No features listed.

### Integrations

**Attack Surface Scan**

9 integrations listed. Sign in on the page to see them.

**Puredns**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Attack Surface Scan](https://cybersectools.com/tools/attack-surface-scan) fits if you want a cloud product.
- [Puredns](https://cybersectools.com/tools/puredns) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product.

## Attack Surface Scan vs Puredns FAQ

Common questions when comparing Attack Surface Scan vs Puredns for external attack surface management.

### What is the difference between Attack Surface Scan and Puredns?

**Attack Surface Scan**: Agentless external attack surface monitoring with continuous change detection. Built by Attack Surface Scan.

**Puredns**: A fast domain resolver and subdomain bruteforcing tool.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Attack Surface Scan and Puredns?

**Attack Surface Scan** is made by Attack Surface Scan. **Puredns** is open-source with 1,982 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Attack Surface Scan a good alternative to Puredns?

Often, yes. Attack Surface Scan and Puredns are both External Attack Surface Management products. Key differences: Attack Surface Scan is Commercial while Puredns is Free, Puredns is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Attack Surface Scan vs SurfaceDiff](https://cybersectools.com/compare/attack-surface-scan-vs-surfacediff)
- [Attack Surface Scan vs crt.guru](https://cybersectools.com/compare/attack-surface-scan-vs-crtguru)
- [Attack Surface Scan vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/attack-surface-scan-vs-ddactic-attack-surface-discovery)
- [Puredns vs SurfaceDiff](https://cybersectools.com/compare/puredns-vs-surfacediff)
- [Puredns vs crt.guru](https://cybersectools.com/compare/crtguru-vs-puredns)
- [Puredns vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-puredns)

## Alternatives to each

- [See all Attack Surface Scan alternatives](https://cybersectools.com/alternatives/attack-surface-scan)
- [See all Puredns alternatives](https://cybersectools.com/alternatives/puredns)

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Source: https://cybersectools.com/compare/attack-surface-scan-vs-puredns

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/attack-surface-scan.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Attack Surface Scan and Puredns: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md