AlienVault Open Threat Exchange (OTX)

UpFreeanti-malware

IP/domain/URL reputation

Visit site ↗Health checked 9h ago

Use it when

Covers IP, domain, and URL data

Watch for

Check the docs depth and real endpoint shape before assuming production fit.

First check

Obtain an API key to authenticate requests. Use the REST API endpoints documented on the official website to query IP, domain, or URL reputation data.

Auth

api_key

CORS

HTTPS

Yes

Signup

Required

Latency

293 ms

Protocol

REST

Pricing

free

Uptime · 30-day window

Probes: 2Uptime: 100%Avg latency: 435ms

About this API

AlienVault Open Threat Exchange (OTX) provides a platform for accessing reputation data related to IP addresses, domains, and URLs. It is designed to help developers and security professionals identify potentially malicious or suspicious entities on the internet.

Users of this API typically include cybersecurity teams, threat analysts, and developers building security tools or integrations. The API facilitates the retrieval of threat intelligence data that can be used to enhance security monitoring, incident response, and automated blocking of harmful traffic.

The API requires an API key for authentication and operates over REST protocols. Its focus on reputation data for multiple entity types makes it relevant for a variety of anti-malware and threat detection applications.

What you can build

1Display reputation scores for IPs
2Validate domain threat levels
3Generate alerts for malicious URLs
4Integrate threat data into security tools

Strengths & limitations

Strengths

Covers IP, domain, and URL data
Focus on threat intelligence
API key authentication

Example request

Generic template — replace <endpoint> with the real path from the docs.

curl https://otx.alienvault.com/api/<endpoint> \
  -H "Authorization: Bearer $API_KEY"
# Some providers use X-Api-Key instead — verify in the docs.

Getting started

Obtain an API key to authenticate requests. Use the REST API endpoints documented on the official website to query IP, domain, or URL reputation data.