diff --git a/i18n-lands.js b/i18n-lands.js
index d6b7a43..60b5359 100644
--- a/i18n-lands.js
+++ b/i18n-lands.js
@@ -2,25 +2,6 @@
 // https://www.iso.org/obp/ui/#search
 
 module.exports = {
-  validatePhone ({ phone } = {}) {
-    try {
-      let [fullphone, itc, callnumber] = /^\+(\d{1,3})-(\d{7,11})$/.exec(phone)
-      switch (itc) {
-        case this.CN.itc:
-          return new RegExp(this.CN.reCallnumber).test(callnumber)
-        case this.SG.itc:
-          return new RegExp(this.CN.reCallnumber).test(callnumber)
-        case this.US.itc:
-          return new RegExp(this.CN.reCallnumber).test(callnumber)
-        case this.JP.itc:
-          return new RegExp(this.CN.reCallnumber).test(callnumber)
-        default:
-          return true
-      }
-    } catch (error) {
-      return false
-    }
-  },
   AD: {
     domain: 'ad',
     emoji: '🇦🇩',
diff --git a/i18n-tool.js b/i18n-tool.js
new file mode 100644
index 0000000..d5f885a
--- /dev/null
+++ b/i18n-tool.js
@@ -0,0 +1,23 @@
+const landSet = require('./i18n-lands.js')
+
+module.exports = {
+  validate_phone ({ phone } = {}) {
+    try {
+      let [fullphone, itc, callnumber] = /^\+(\d{1,3})-(\d{7,11})$/.exec(phone)
+      switch (itc) {
+        case landSet.CN.itc:
+          return new RegExp(landSet.CN.reCallnumber).test(callnumber)
+        case landSet.JP.itc:
+          return new RegExp(landSet.JP.reCallnumber).test(callnumber)
+        case landSet.SG.itc:
+          return new RegExp(landSet.SG.reCallnumber).test(callnumber)
+        case landSet.US.itc:
+          return new RegExp(landSet.US.reCallnumber).test(callnumber)
+        default:
+          return true
+      }
+    } catch (error) {
+      return false
+    }
+  },
+}
diff --git a/i18n.js b/i18n.js
index 47b6e4d..3738489 100644
--- a/i18n.js
+++ b/i18n.js
@@ -3,4 +3,5 @@ module.exports = {
   landSet: require('./i18n-lands.js'),
   currencySet: require('./i18n-currencies.js'),
   cryptocoinSet: require('./i18n-cryptocoins.js'),
+  i18tool: require('./i18n-tool.js'),
 }