# Constella Threat Intelligence Data Signals API vs Farsight Security DNSDB: side-by-side comparison (2026)

[Constella Threat Intelligence Data Signals API](https://cybersectools.com/tools/constella-threat-intelligence-data-signals-api) is a commercial [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution by [Constella Intelligence](https://cybersectools.com/companies/constella-intelligence). [Farsight Security DNSDB](https://cybersectools.com/tools/farsight-security-dnsdb) is a commercial [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution by [Farsight Security](https://cybersectools.com/companies/farsight-security). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Constella Threat Intelligence Data Signals API | Farsight Security DNSDB |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Threat Intel Feeds | Threat Intel Feeds |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Constella Intelligence | Farsight Security |
| Headquarters | – | – |

### Use cases and capabilities

| | Constella Threat Intelligence Data Signals API | Farsight Security DNSDB |
|---|---|---|
| Dark Web Monitoring | Yes | – |
| Data Breach | Yes | – |
| Fraud Detection | Yes | – |
| Cyber Threat Intelligence | Yes | Yes |
| Investigation | – | Yes |

### Core features

**Constella Threat Intelligence Data Signals API**

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

**Farsight Security DNSDB**

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

### Integrations

**Constella Threat Intelligence Data Signals API**

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

**Farsight Security DNSDB**

1 integration 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.

- [Farsight Security DNSDB](https://cybersectools.com/tools/farsight-security-dnsdb) fits if you are a small business.

## Constella Threat Intelligence Data Signals API vs Farsight Security DNSDB FAQ

Common questions when comparing Constella Threat Intelligence Data Signals API vs Farsight Security DNSDB for threat intel feeds.

### What is the difference between Constella Threat Intelligence Data Signals API and Farsight Security DNSDB?

**Constella Threat Intelligence Data Signals API**: API providing access to compromised identity data and threat signals, built by Constella Intelligence.

**Farsight Security DNSDB**: Passive DNS intelligence platform for threat detection and investigation, built by Farsight Security.

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

### Who makes Constella Threat Intelligence Data Signals API and Farsight Security DNSDB?

**Constella Threat Intelligence Data Signals API** is made by Constella Intelligence. **Farsight Security DNSDB** is made by Farsight Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Constella Threat Intelligence Data Signals API a good alternative to Farsight Security DNSDB?

Often, yes. Constella Threat Intelligence Data Signals API and Farsight Security DNSDB are both Threat Intel Feeds products, and both cover Cyber Threat Intelligence. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Constella Threat Intelligence Data Signals API vs ZeroFox Threat Intelligence Feeds](https://cybersectools.com/compare/constella-threat-intelligence-data-signals-api-vs-zerofox-threat-intelligence-feeds)
- [Constella Threat Intelligence Data Signals API vs Webz.io](https://cybersectools.com/compare/constella-threat-intelligence-data-signals-api-vs-webzio)
- [Constella Threat Intelligence Data Signals API vs Netacea Threat Intel Center](https://cybersectools.com/compare/constella-threat-intelligence-data-signals-api-vs-netacea-threat-intel-center)
- [Farsight Security DNSDB vs ZeroFox Threat Intelligence Feeds](https://cybersectools.com/compare/farsight-security-dnsdb-vs-zerofox-threat-intelligence-feeds)
- [Farsight Security DNSDB vs Webz.io](https://cybersectools.com/compare/farsight-security-dnsdb-vs-webzio)
- [Farsight Security DNSDB vs Netacea Threat Intel Center](https://cybersectools.com/compare/farsight-security-dnsdb-vs-netacea-threat-intel-center)

## Alternatives to each

- [See all Constella Threat Intelligence Data Signals API alternatives](https://cybersectools.com/alternatives/constella-threat-intelligence-data-signals-api)
- [See all Farsight Security DNSDB alternatives](https://cybersectools.com/alternatives/farsight-security-dnsdb)

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Source: https://cybersectools.com/compare/constella-threat-intelligence-data-signals-api-vs-farsight-security-dnsdb

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

More on Constella Threat Intelligence Data Signals API and Farsight Security DNSDB: 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