# IPQS IP Address Block List vs IPsum: side-by-side comparison (2026)

[IPQS IP Address Block List](https://cybersectools.com/tools/ipqs-ip-address-block-list) is a commercial [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution by [IPQualityScore](https://cybersectools.com/companies/ipqualityscore). [IPsum](https://cybersectools.com/tools/ipsum) is a free [threat intel feeds](https://cybersectools.com/categories/threat-intel-feeds) solution. Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | IPQS IP Address Block List | IPsum |
|---|---|---|
| Pricing model | Commercial | Free |
| Category | Threat Intel Feeds | Threat Intel Feeds |
| Verified | No | No |
| Deployment type | Cloud | Cloud |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| GitHub stars | – | 2,213 |
| Last commit | – | Mar 2026 |
| Company | IPQualityScore | – |
| Headquarters | – | – |

### Use cases and capabilities

| | IPQS IP Address Block List | IPsum |
|---|---|---|
| IP Address | Yes | – |
| Fraud Detection | Yes | – |
| Bot Protection | Yes | – |
| Proxy | Yes | – |
| Botnet | Yes | – |
| IP Lookup | Yes | – |
| Cyber Threat Intelligence | Yes | – |

### Core features

**IPQS IP Address Block List**

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

**IPsum**

No features listed.

## Which one fits you

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

- [IPsum](https://cybersectools.com/tools/ipsum) fits if you need a free product and you want an open-source product.

## IPQS IP Address Block List vs IPsum FAQ

Common questions when comparing IPQS IP Address Block List vs IPsum for threat intel feeds.

### What is the difference between IPQS IP Address Block List and IPsum?

**IPQS IP Address Block List**: IP address blocklist service for identifying and blocking fraudulent IPs, built by IPQualityScore.

**IPsum**: Daily feed of bad IPs with blacklist hit scores for cybersecurity professionals to stay informed about malicious IP addresses.

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

### Who makes IPQS IP Address Block List and IPsum?

**IPQS IP Address Block List** is made by IPQualityScore. **IPsum** is open-source with 2,213 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is IPQS IP Address Block List a good alternative to IPsum?

Often, yes. IPQS IP Address Block List and IPsum are both Threat Intel Feeds products. Key differences: IPQS IP Address Block List is Commercial while IPsum is Free, IPsum is open-source. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [IPQS IP Address Block List vs IPQS IP Address Abuse Feed](https://cybersectools.com/compare/ipqs-ip-address-abuse-feed-vs-ipqs-ip-address-block-list)
- [IPQS IP Address Block List vs MaxMind GeoIP Insights](https://cybersectools.com/compare/ipqs-ip-address-block-list-vs-maxmind-geoip-insights)
- [IPQS IP Address Block List vs IP2Location IP2Proxy Proxy Detection Database](https://cybersectools.com/compare/ip2location-ip2proxy-proxy-detection-database-vs-ipqs-ip-address-block-list)
- [IPsum vs IPQS IP Address Abuse Feed](https://cybersectools.com/compare/ipqs-ip-address-abuse-feed-vs-ipsum)
- [IPsum vs MaxMind GeoIP Insights](https://cybersectools.com/compare/ipsum-vs-maxmind-geoip-insights)
- [IPsum vs IP2Location IP2Proxy Proxy Detection Database](https://cybersectools.com/compare/ip2location-ip2proxy-proxy-detection-database-vs-ipsum)

## Alternatives to each

- [See all IPQS IP Address Block List alternatives](https://cybersectools.com/alternatives/ipqs-ip-address-block-list)
- [See all IPsum alternatives](https://cybersectools.com/alternatives/ipsum)

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Source: https://cybersectools.com/compare/ipqs-ip-address-block-list-vs-ipsum

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

More on IPQS IP Address Block List and IPsum: 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