Whisper Developer Portal

Access billions of real-time, correlated data points on every domain, IP, and network on the internet. Instantly.

Get Your Free API Key Read Quick Starter Guide

# Make your first call

curl --location 'https://api.whisper.security/intelligence/v1/ip/8.8.8.8' \
--header 'Authorization: Bearer {Yor API Key}'

"registrar": "MarkMonitor Inc.",
"expiration_date": "2028-09-14",
   ...,
"asn": "AS15169",
"org": "GOOGLE"

Get Started

Make your first API call in minutes

Learn how you can quickly get started and make API calls in 2 minutes!

Explore Whisper Core API

Domain Intelligence API

Analyze any domain to get a 360-degree view of its WHOIS data, DNS records, SSL certificates, and underlying infrastructure.

Domain Management API

Discover and enumerate internet assets. Use this service to find subdomains for any domain with powerful filtering options.

IP Intelligence API

Get a complete profile of any IP address, including its geolocation, network data, relationships, and a real-time risk score.

Realtime Streaming

Learn about the Whisper API's two response formats: standard batched JSON for complete data and real-time Server-Sent Events (SSE) for low-latency streaming.

See Examples of What You Can Build

See Everything You Own Online

Use the Whisper API to map an organization's digital footprint and perform comprehensive asset discovery.

Enrich Your Threat Intel

Use our API for threat intelligence, investigation, and risk scoring.

Protect Your Brand

Detect phishing sites and typosquatting domains the moment they're registered using our comprehensive domain intelligence.

Power Your AI Agents

Feed our comprehensive intelligence on domains, IPs, and web infrastructure directly into your LLMs and AI agents.

Verify Geolocation & Compliance

Get accurate, real-time geolocation data from our IP Intelligence endpoint, including country, city, and coordinates, to track service usage.

Learn About Developer Tools