GetJsonip/jsonip.com is a minimalist IP address lookup API. Developers can visit https://jsonip.com to get the client IP returned as JSON, with support for both IPv4 and IPv6. The page describes it as a “free unlimited IP address and geolocation API,” but the main examples shown focus primarily on returning the IP address; we did not see examples of full geolocation fields such as country, city, latitude/longitude, or ASN.
Its biggest strength is being browser-friendly: it supports CORS and returns Access-Control-Allow-Origin: *, so frontends can call it directly with the Fetch API. It also supports JSONP, with the callback function specified either via the path or the callback parameter. The endpoint design is clear as well: ipv4.jsonip.com is for IPv4-only results, ipv6.jsonip.com is for IPv6-only results, and no-tls.jsonip.com is intended for special cases where HTTP must be used and TLS is not available. The page also mentions that it can be used for dynamic DNS updates after an IP address changes.
Pricing information is very simple: the page claims the service is free and unlimited, with no visible API key, plans, billing model, or quota limits. Integration does not require an SDK; any language or framework capable of sending HTTP requests can use it. The page only provides a JavaScript Fetch example. If stronger IP geolocation and additional metadata are needed, the page recommends IPinfo.io.
The advantages are its extremely simple API, low learning curve, frontend CORS support, and clearly separated IPv4/IPv6 endpoints, making it suitable for small tools, debugging, demos, or lightweight business use. The downsides are also clear: the documentation is brief and lacks a response schema, error codes, rate limits, SLA, privacy details, and information about the maintainer. Its “geolocation” capability is not meaningfully demonstrated in the main content, so it feels more like an IP retrieval API. There is also no information about open source availability, self-hosting, official SDKs, or enterprise support.
It is best suited for frontend developers, network diagnostic tools, dynamic DNS helper scripts, and low-risk internal tools that need to quickly obtain the client’s public IP address. It is not recommended as a critical production dependency unless you implement your own fallback logic and backup providers. The page does not provide information about access from mainland China, so its status is unknown. If direct access is unstable, consider deploying your own IP echo service or choosing a similar IP lookup/API service with clearer network performance in China.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on getjsonip.com official site.
getjsonip.com is an United States Dev Tools provider. TG4G tracks its product information, an overall rating of 7.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach getjsonip.com directly.