diff --git a/FastGithub/Program.cs b/FastGithub/Program.cs
index 22e9b1a..d001c4b 100644
--- a/FastGithub/Program.cs
+++ b/FastGithub/Program.cs
@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using System.IO;
 
 namespace FastGithub
 {
@@ -30,6 +32,13 @@ namespace FastGithub
                 {
                     c.ValidateOnBuild = false;
                 })
+                .ConfigureAppConfiguration(c =>
+                {
+                    foreach (var jsonFile in Directory.GetFiles(".", "appsettings.*.json"))
+                    {
+                        c.AddJsonFile(Path.GetFileName(jsonFile), true, true);
+                    }
+                })
                 .ConfigureServices((ctx, services) =>
                 {
                     services.AddDnsServer();
diff --git a/FastGithub/appsettings.github.json b/FastGithub/appsettings.github.json
new file mode 100644
index 0000000..df6cecb
--- /dev/null
+++ b/FastGithub/appsettings.github.json
@@ -0,0 +1,35 @@
+{
+  "FastGithub": {
+    "DomainConfigs": {
+      "github.com": {
+        "TlsSni": false
+      },
+      "githubstatus.com": {
+        "TlsSni": false
+      },
+      "*.github.com": {
+        "TlsSni": false
+      },
+      "*.github.io": {
+        "TlsSni": false,
+        "TlsIgnoreNameMismatch": true
+      },
+      "*.githubapp.com": {
+        "TlsSni": false,
+        "TlsIgnoreNameMismatch": true
+      },
+      "*.githubassets.com": {
+        "TlsSni": false,
+        "TlsIgnoreNameMismatch": true
+      },
+      "*.githubusercontent.com": {
+        "TlsSni": false,
+        "TlsIgnoreNameMismatch": true
+      },
+      "*github*.s3.amazonaws.com": {
+        "TlsSni": false,
+        "TlsIgnoreNameMismatch": true
+      }
+    }
+  }
+}
diff --git a/FastGithub/appsettings.json b/FastGithub/appsettings.json
index 890ef88..c108d5b 100644
--- a/FastGithub/appsettings.json
+++ b/FastGithub/appsettings.json
@@ -1,4 +1,5 @@
 {
+  // 新增的子配置文件appsettings.*.json，重启应用程序才生效
   "FastGithub": {
     "PureDns": { // 用于解析DomainConfigs的域名
       "IPAddress": "127.0.0.1",
@@ -8,82 +9,17 @@
       "IPAddress": "114.114.114.114",
       "Port": 53
     },
-    "DomainConfigs": { // 域名的*表示除.之外0到多个任意字符    
-      "github.com": {
+    "DomainConfigs": {
+      "*.x.y.z.com": { // 域名的*表示除.之外0到多个任意字符
         "TlsSni": false, // 指示tls握手时是否发送SNI
         "TlsSniPattern": null, // SNI表达式，@domain变量表示取域名值 @ipadress变量表示取ip @random变量表示取随机值，其它字符保留不替换
         "TlsIgnoreNameMismatch": false, // 是否忽略服务器证书域名不匹配，当不发送SNI时服务器可能发回域名不匹配的证书，默认为false
         "Timeout": null, // 请求超时时长，格式为"00:02:00"，默认为null
-        "Destination": null // 请求目的地，格式为绝对或相对Uri，默认null
-        //"Response": { // 阻断请求直接响应，设置了Response其它配置都不起作用了
-        //  "StatusCode": 404,
-        //  "ContentType": "text/plain;charset=utf-8",
-        //  "ContentValue": "阻断的请求"
-        //}
-      },
-      "githubstatus.com": {
-        "TlsSni": false
-      },
-      "*.github.com": {
-        "TlsSni": false
-      },
-      "*.github.io": {
-        "TlsSni": false,
-        "TlsIgnoreNameMismatch": true
-      },
-      "*.githubapp.com": {
-        "TlsSni": false,
-        "TlsIgnoreNameMismatch": true
-      },
-      "*.githubassets.com": {
-        "TlsSni": false,
-        "TlsIgnoreNameMismatch": true
-      },
-      "*.githubusercontent.com": {
-        "TlsSni": false,
-        "TlsIgnoreNameMismatch": true
-      },
-      "*github*.s3.amazonaws.com": {
-        "TlsSni": false,
-        "TlsIgnoreNameMismatch": true
-      },
-      "ajax.googleapis.com": {
-        "TlsSni": true,
-        "Destination": "https://gapis.geekzu.org/ajax/"
-      },
-      "fonts.googleapis.com": {
-        "TlsSni": true,
-        "Destination": "https://fonts.geekzu.org/"
-      },
-      "themes.googleusercontent.com": {
-        "TlsSni": true,
-        "Destination": "https://gapis.geekzu.org/g-themes/"
-      },
-      "fonts.gstatic.com": {
-        "TlsSni": true,
-        "Destination": "https://gapis.geekzu.org/g-fonts/"
-      },
-      "secure.gravatar.com": {
-        "TlsSni": true,
-        "Destination": "https://sdn.geekzu.org/"
-      },
-      "*.gravatar.com": {
-        "TlsSni": true,
-        "Destination": "https://fdn.geekzu.org/"
-      },
-      "i.stack.imgur.com": {
-        "Response": {
-          "StatusCode": 404
-        }
-      },
-      "lh*.googleusercontent.com": {
-        "Response": {
-          "StatusCode": 404
-        }
-      },
-      "www.google.com": {
-        "Response": {
-          "StatusCode": 404
+        "Destination": null, // 请求目的地，格式为绝对或相对Uri，默认null
+        "Response": { // 阻断请求直接响应，设置了Response其它配置都不起作用了
+          "StatusCode": 404, // 响应的状态码
+          "ContentType": "text/plain;charset=utf-8", // 如果有ContentValue，就要指示ContentType
+          "ContentValue": "这是一个用于示范配置的域名" // 自定义返回的内容，这是可选的
         }
       }
     }
diff --git a/FastGithub/appsettings.stackoverflow.json b/FastGithub/appsettings.stackoverflow.json
new file mode 100644
index 0000000..a3b9be9
--- /dev/null
+++ b/FastGithub/appsettings.stackoverflow.json
@@ -0,0 +1,45 @@
+{
+  "FastGithub": {
+    "DomainConfigs": {
+      "ajax.googleapis.com": {
+        "TlsSni": true,
+        "Destination": "https://gapis.geekzu.org/ajax/"
+      },
+      "fonts.googleapis.com": {
+        "TlsSni": true,
+        "Destination": "https://fonts.geekzu.org/"
+      },
+      "themes.googleusercontent.com": {
+        "TlsSni": true,
+        "Destination": "https://gapis.geekzu.org/g-themes/"
+      },
+      "fonts.gstatic.com": {
+        "TlsSni": true,
+        "Destination": "https://gapis.geekzu.org/g-fonts/"
+      },
+      "secure.gravatar.com": {
+        "TlsSni": true,
+        "Destination": "https://sdn.geekzu.org/"
+      },
+      "*.gravatar.com": {
+        "TlsSni": true,
+        "Destination": "https://fdn.geekzu.org/"
+      },
+      "i.stack.imgur.com": {
+        "Response": {
+          "StatusCode": 404
+        }
+      },
+      "lh*.googleusercontent.com": {
+        "Response": {
+          "StatusCode": 404
+        }
+      },
+      "www.google.com": {
+        "Response": {
+          "StatusCode": 404
+        }
+      }
+    }
+  }
+}