diff --git a/dependencies.properties b/dependencies.properties
index 75311a34..1ae6f3da 100644
--- a/dependencies.properties
+++ b/dependencies.properties
@@ -1 +1 @@
-core.version=0.16.1
\ No newline at end of file
+core.version=0.16.4
\ No newline at end of file
diff --git a/lib/features/proxy/data/proxy_repository.dart b/lib/features/proxy/data/proxy_repository.dart
index a02f7c6c..54cc0703 100644
--- a/lib/features/proxy/data/proxy_repository.dart
+++ b/lib/features/proxy/data/proxy_repository.dart
@@ -127,6 +127,7 @@ class ProxyRepositoryImpl
   final Map<String, IpInfo Function(Map<String, dynamic> response)>
       _ipInfoSources = {
     // "https://geolocation-db.com/json/": IpInfo.fromGeolocationDbComJson, //bug response is not json
+    "https://ipwho.is/": IpInfo.fromIpwhoIsJson,
     "https://api.ip.sb/geoip/": IpInfo.fromIpSbJson,
     "https://ipapi.co/json/": IpInfo.fromIpApiCoJson,
     "https://ipinfo.io/json/": IpInfo.fromIpInfoIoJson,
diff --git a/lib/features/proxy/model/ip_info_entity.dart b/lib/features/proxy/model/ip_info_entity.dart
index 228c7c96..999b0068 100644
--- a/lib/features/proxy/model/ip_info_entity.dart
+++ b/lib/features/proxy/model/ip_info_entity.dart
@@ -92,6 +92,30 @@ class IpInfo with IpInfoMappable {
     };
   }
 
+  static IpInfo fromIpwhoIsJson(Map<String, dynamic> json) {
+    return switch (json) {
+      {
+        "ip": final String ip,
+        "country_code": final String countryCode,
+        // "region": final String region,
+        // "city": final String city,
+        // "timezone": final String timezone,
+        // "asn": final int asn,
+        "connection": final Map<String, dynamic> connection,
+      } =>
+        IpInfo(
+          ip: ip,
+          countryCode: countryCode,
+          // region: region,
+          // city: city,
+          // timezone: timezone,
+          asn: '$connection["asn"]',
+          org: '$connection["org"]',
+        ),
+      _ => throw const FormatException("invalid json"),
+    };
+  }
+
   static IpInfo fromGeolocationDbComJson(Map<String, dynamic> json) {
     return switch (json) {
       {
diff --git a/libcore b/libcore
index 48297a74..4dad3022 160000
--- a/libcore
+++ b/libcore
@@ -1 +1 @@
-Subproject commit 48297a74aecec0410120e52001cc30d84d77c875
+Subproject commit 4dad3022f3bb5073a7d7927fa605b81fa1942752