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Whisper API Overview

The Whisper API is an intelligence engine that gives you access to real-time data about the internet's infrastructure. It provides a unified way to get comprehensive information on domains, IPs, and networks through a simple, authenticated API.

Core Capabilities

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Whisper turns raw, disconnected internet data into correlated, actionable intelligence. It's built to be fast, comprehensive, and easy to integrate into your tools and workflows.

Here’s a breakdown of what you can do:

  • Domain Intelligence: Get a complete picture of any domain. This includes everything from WHOIS registration data, DNS records, and associated infrastructure to security certificates and trademark information. It’s perfect for domain investigation, security assessments, and competitive intelligence.
  • IP Intelligence: Analyze any IP address to understand its geolocation, network topology, ISP, and potential risk. The API provides a risk score and details on BGP routing, making it essential for threat intelligence, incident response, and network security.
  • Subdomain Discovery: Find and enumerate subdomains for any base domain. This is a crucial tool for asset discovery, security reconnaissance, and mapping out an organization's digital footprint.
  • Security Intelligence: Assess threats with built-in risk scoring and security insights. The API helps you quickly understand the reputation of an IP or domain.
  • Network Analysis: Map out network relationships, validate RPKI, and analyze BGP routing data to understand how different parts of the internet are connected.

How It Works

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Getting started with the Whisper API is designed to be quick and straightforward.

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Authentication

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All API requests are secured using Bearer Token authentication. You simply include your unique API key in the Authorization header of every request you make.
See more details at Authentication Guide

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Data Formats

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You have two ways to receive data, giving you flexibility for any use case:

  1. Batch Mode (JSON): The default format, perfect for getting a complete, structured JSON object in a single response.
  2. Streaming Mode (Server-Sent Events): For real-time applications, you can use text/event-stream to receive data incrementally as it becomes available. This is ideal for large datasets or for powering live dashboards.

See more details at Response Formats Guide

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Who It's For

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The Whisper API is a foundational tool for anyone who needs to understand and interact with internet infrastructure data.

  • Cybersecurity Teams: For enriching threat intelligence, investigating incidents, and performing security assessments on infrastructure.
  • Brand Protection Specialists: For monitoring the internet for phishing, typosquatting, and other forms of brand abuse.
  • Infrastructure & DevOps Engineers: For asset discovery, infrastructure mapping, and monitoring network health.
  • Researchers & Analysts: For conducting due diligence, market research, and competitive intelligence by analyzing an organization's online presence.

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