IP Ninja

IP Ninja is a network intelligence API providing access to structured IP and domain-related data. It is designed for IT security professionals, researchers, and developers who require normalized information for investigations and infrastructure mapping.

The platform aggregates data from internal databases, passive DNS collection, and real-time probes to provide several core utilities:

• Reverse IP & Hostname History: Returns all known hostnames tied to a specific IPv4 or IPv6 address, including historical associations that are no longer present in current PTR records.

• Structured WHOIS Data: Provides parsed WHOIS records for both IP addresses (RIR data) and domain names (Beta), covering registrars, registration dates (created, updated, expires), and contact handles.

• Subdomain Enumeration: Identifies known subdomains for a given root domain through a specialized internal engine.

• ASN & Infrastructure Mapping: Maps IP addresses to their respective Autonomous System (ASN) and allows searching for all hostnames managed by a specific ASN infrastructure.

• DNS & Geolocation: Includes real-time DNS resolution for A and AAAA records, alongside geolocation data such as city, country, continent, and coordinates.

Technical Integration:

IP Ninja is a SaaS-based API that delivers results in JSON format. It uses a custom HTTP header (X-Ninja) for authentication and is designed for easy integration into existing security workflows, dashboards, or custom scripts. The API documentation provides copy-paste curl examples and detailed response schemas for each endpoint.

Common Use Cases:

• Cybersecurity Analysis: Investigating attack surface and infrastructure ownership.

• Threat Intelligence: Identifying historical ties between domains and IP addresses.

• Network Administration: Verifying DNS propagation and ASN assignments.

• Fraud Prevention: Validating domain registration details and geographic origins.