diff --git a/README.md b/README.md
index 7491fe4c..b2c878e0 100644
--- a/README.md
+++ b/README.md
@@ -1110,6 +1110,7 @@ API | Description | Auth | HTTPS | CORS |
 | [ipgeolocation](https://ipgeolocation.io/) | IP Geolocation AP with free plan 30k requests per month | `apiKey` | Yes | Yes |
 | [IPInfoDB](https://www.ipinfodb.com/api) | Free Geolocation tools and APIs for country, region, city and time zone lookup by IP address | `apiKey` | Yes | Unknown |
 | [ipstack](https://ipstack.com/) | Locate and identify website visitors by IP address | `apiKey` | Yes | Unknown |
+| [ipwhois](https://ipwhois.io/documentation) | IP geolocation with country, city, coordinates, ISP, timezone and flag data | No | Yes | Yes |
 | [Kakao Maps](https://apis.map.kakao.com) | Kakao Maps provide multiple APIs for Korean maps | `apiKey` | Yes | Unknown |
 | [keycdn IP Location Finder](https://tools.keycdn.com/geo) | Get the IP geolocation data through the simple REST API. All the responses are JSON encoded | `apiKey` | Yes | Unknown |
 | [Kiprio UK Postcode](https://kiprio.com/v1/postcode) | UK postcode lookup with lat/lon, district, ward, constituency | `apiKey` | Yes | Yes |