ip-info-api is a curated repository of free IP-information endpoints that can be queried without obtaining an API key. It is primarily a reference collection rather than a single hosted API implementation. The list includes services for detecting a visitor's public IP, looking up a supplied IP address, retrieving geolocation data, and obtaining ISP or network details. Entries are grouped by capabilities such as self-IP lookup, arbitrary IP lookup, reverse regional queries, and simple IP-only responses. The documentation records request methods, parameters, CORS behavior, example responses, and whether individual services have stopped working. Many endpoints use simple GET requests and return JSON or similarly lightweight responses. The collection is continuously updated so developers can compare alternatives when public IP services change or disappear.

Features

  • No-key IP information API directory
  • Public IP detection services
  • IP geolocation and ISP lookup endpoints
  • Self-IP and arbitrary-address query options
  • Request examples and response documentation
  • Availability and deprecated-endpoint tracking

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License

Apache License V2.0

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Registered

2026-09-11
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