diff --git a/i18n-phone.js b/i18n-phone.js
index 12f2b95..c52689a 100644
--- a/i18n-phone.js
+++ b/i18n-phone.js
@@ -8,13 +8,13 @@ module.exports = {
       let [fullphone, areacode, callnumber] = /^\+(\d{1,3})-(\d{7,11})$/.exec(phone)
       switch (areacode) {
         case this.landSet['CN'].itc:
-          return /^1\d{10}$/.test(callnumber)
+          return this.CN.test(callnumber)
         case this.landSet['SG'].itc:
-          return /^[89]\d{7}$/.test(callnumber)
+          return this.SG.test(callnumber)
         case this.landSet['US'].itc:
-          return /^\d{10}$/.test(callnumber)
+          return this.US.test(callnumber)
         case this.landSet['JP'].itc:
-          return /^\d{10}$/.test(callnumber)
+          return this.JP.test(callnumber)
         default:
           return true
       }