# IPDEX by CrowdSec

> IPDEX is a free, browser-based IP reputation and threat intelligence tool powered by CrowdSec CTI (Cyber Threat Intelligence).

## What IPDEX does

- **IP reputation lookup**: Check any IP address for reputation signals — malicious, suspicious, clean, or known.
- **Bulk IP reputation check**: Paste or upload thousands of IP addresses and scan them all at once (up to 100,000 IPs per run).
- **Blocklist detection**: Identify IPs present on CrowdSec's community blocklists, built from millions of real-world threat reports.
- **Threat intelligence**: Each IP result includes country, ASN, behaviors observed, attack categories, and confidence scores.
- **IOC investigation**: Investigate indicators of compromise (IOCs) from firewall logs, SIEM alerts, or incident reports.
- **Threat hunting**: Correlate IPs across large datasets to identify patterns and malicious infrastructure.

## Who uses IPDEX

SOC analysts, blue team defenders, penetration testers, IT administrators, DevOps/SRE engineers, security researchers, and CISOs.

## Powered by CrowdSec CTI

CrowdSec is an open-source, crowd-sourced security company. Its CTI database aggregates threat intelligence from a global network of millions of sensors, providing real-time, community-validated IP reputation data.

## URL

https://ipdex.crowdsec.net

## Related

- CrowdSec website: https://www.crowdsec.net
- CrowdSec CTI API: https://www.crowdsec.net/cyber-threat-intelligence