Which free API interfaces can be used to query the region to which the IP address belongs?

Free IP address geolocation query API interface recommendation

When developing applications, it is crucial to quickly and accurately obtain the geolocation information of the IP address. This article will introduce several free API interfaces that provide such services.

1. ip-api.com

   The API is powerful, supports multilingual and provides detailed IP address information. For example, use the following URL (replace 117.136.12.79 with the destination IP address) and specify the Chinese simplified language:

    <code>http://ip-api.com/json/117.136.12.79?lang=zh-cn</code>

   The returned JSON data contains information such as country, region, city, ISP, etc., which is very suitable for applications that require precise geographical location.

2. Baidu IP address query API

   Baidu also provides free IP address query service, with URLs similar to:

    <code>http://opendata.baidu.com/api.php?query=117.136.12.79&co=&res...</code>

   (Note: The specific URL and parameters of this API may need to be adjusted according to the official Baidu document.) The return result is concise and clear, suitable for quickly obtaining basic geographical location information of IP addresses.

3. useragentinfo IP API

   This API provides an IP geolocation query service without frequency limits, which is ideal for applications that require a large number of queries. Call URL:

    <code>https://ip.useragentinfo.com/json?ip=117.136.12.79</code>

   The return data contains information such as country, province, ISP, etc., and its advantage is that it has no frequency limit.

4. vore-api IP data query

   vore-api supports IPv4 and IPv6 address query, and call URL:

    <code>https://api.vore.top/api/ipdata?ip=117.136.12.79</code>

   The returned JSON data contains information such as province, city, ISP, etc., and can automatically distinguish IPv4 and IPv6 addresses.

Choosing the right API interface depends on your specific needs. These free APIs provide convenience for developers and improve development efficiency. Please note that there may be certain restrictions on the use of free APIs. It is recommended that you refer to the official documentation of each API to understand the specific usage rules and restrictions.

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