# SecurityTrails API vs Unit 221B Threat Intelligence: side-by-side comparison (2026)

[SecurityTrails API](https://cybersectools.com/tools/securitytrails) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [Recorded Future](https://cybersectools.com/companies/recorded-future). [Unit 221B Threat Intelligence](https://cybersectools.com/tools/unit-221b-threat-intelligence) is a commercial [threat intel platforms](https://cybersectools.com/categories/tip) solution by [Unit 221B](https://cybersectools.com/companies/unit-221b). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Threat Intelligence Platform Solutions for Business](https://cybersectools.com/shortlists/best-threat-intelligence-platforms) picks Recorded Future Threat Intelligence, Google Threat Intelligence, CrowdStrike Falcon Adversary Intelligence and 4 more.

## Side-by-side comparison

| | SecurityTrails API | Unit 221B Threat Intelligence |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Threat Intel Platforms | Threat Intel Platforms |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Recorded Future | Unit 221B |
| Headquarters | – | – |

### Use cases and capabilities

| | SecurityTrails API | Unit 221B Threat Intelligence |
|---|---|---|
| DNS Security | Yes | – |
| IP Lookup | Yes | – |
| Reconnaissance | Yes | – |
| Subdomain Enumeration | Yes | – |
| Cyber Threat Intelligence | Yes | Yes |
| Investigation | Yes | – |
| REST API | Yes | – |
| Attack Paths | Yes | – |
| Threat Analysis | – | Yes |
| Threat Research | – | Yes |
| Dark Web Monitoring | – | Yes |

### Core features

**SecurityTrails API**

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

**Unit 221B Threat Intelligence**

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

## Which one fits you

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

- [Unit 221B Threat Intelligence](https://cybersectools.com/tools/unit-221b-threat-intelligence) fits if you are a startup.

## SecurityTrails API vs Unit 221B Threat Intelligence FAQ

Common questions when comparing SecurityTrails API vs Unit 221B Threat Intelligence for threat intel platforms.

### What is the difference between SecurityTrails API and Unit 221B Threat Intelligence?

**SecurityTrails API**: API platform providing historical DNS, WHOIS, and IP data for security research. Built by Recorded Future.

**Unit 221B Threat Intelligence**: Threat intel service focused on adversary attribution and monitoring. Built by Unit 221B.

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

### Who makes SecurityTrails API and Unit 221B Threat Intelligence?

**SecurityTrails API** is made by Recorded Future. **Unit 221B Threat Intelligence** is made by Unit 221B. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is SecurityTrails API a good alternative to Unit 221B Threat Intelligence?

Often, yes. SecurityTrails API and Unit 221B Threat Intelligence are both Threat Intel Platforms products, and both cover Cyber Threat Intelligence. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [SecurityTrails API vs Validin](https://cybersectools.com/compare/securitytrails-vs-validin)
- [SecurityTrails API vs Nucleon Cyber AGTI Platform](https://cybersectools.com/compare/nucleon-cyber-agti-platform-vs-securitytrails)
- [SecurityTrails API vs VicOne xAurient](https://cybersectools.com/compare/securitytrails-vs-vicone-xaurient)
- [Unit 221B Threat Intelligence vs Validin](https://cybersectools.com/compare/unit-221b-threat-intelligence-vs-validin)
- [Unit 221B Threat Intelligence vs Nucleon Cyber AGTI Platform](https://cybersectools.com/compare/nucleon-cyber-agti-platform-vs-unit-221b-threat-intelligence)
- [Unit 221B Threat Intelligence vs VicOne xAurient](https://cybersectools.com/compare/unit-221b-threat-intelligence-vs-vicone-xaurient)

## Alternatives to each

- [See all SecurityTrails API alternatives](https://cybersectools.com/alternatives/securitytrails)
- [See all Unit 221B Threat Intelligence alternatives](https://cybersectools.com/alternatives/unit-221b-threat-intelligence)

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Source: https://cybersectools.com/compare/securitytrails-vs-unit-221b-threat-intelligence

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

More on SecurityTrails API and Unit 221B Threat Intelligence: 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