The complete IPv4 address space, mapped
WorldIP.io offers a free, no-signup platform to meticulously map and query the entire IPv4 address space. It provides detailed information on ownership, ASN, geolocation, and reverse DNS for all 4.3 billion addresses. This level of comprehensive, accessible data for internet infrastructure is a compelling draw for the technically-minded HN community.
The Lowdown
WorldIP.io presents itself as a robust, free online utility designed to provide exhaustive information about the entire IPv4 address space. The platform aggregates data from multiple authoritative sources to offer detailed insights into IP address ownership, geographic location, and network-level assignments without requiring any user registration or API keys.
- Comprehensive Lookups: Users can perform detailed lookups for any IPv4 address, CIDR range, Autonomous System Number (ASN), or organization, revealing owner, ASN, geo-location, and reverse DNS.
- Geographic Breakdown: The service allows drilling down from countries to states/regions and cities to identify top ISPs and IP allocations at each level.
- IPv4 Exhaustion Tracking: The site also tracks the allocation status of the 4.3 billion IPv4 addresses, detailing how much space is used and the breakdown by Regional Internet Registry (RIR).
- Data Sources: WorldIP.io combines data from MaxMind GeoLite2 for geolocation, RIR delegation files (ARIN, RIPE, APNIC, LACNIC, AfriNIC) for ownership, and Team Cymru for ASN-to-organization mapping.
- Deep Linking & Refresh: Every IPv4 address has a unique, deep-linkable URL, and the data is refreshed weekly to ensure accuracy.
- Free and Accessible: The service emphasizes its complete freeness and ease of use, with no signup or API keys required, making it highly accessible.
This tool serves as an invaluable resource for anyone needing to understand the intricate landscape of IPv4 address allocation and ownership, offering a transparent and powerful interface to previously disparate datasets.