diff --git a/src/Support/BaseIdentification.php b/src/Support/BaseIdentification.php
index 4070077..e436612 100644
--- a/src/Support/BaseIdentification.php
+++ b/src/Support/BaseIdentification.php
@@ -14,6 +14,12 @@ class BaseIdentification implements IdentificationContract
      * @var int
      */
     protected $provinces = 24;
+       
+    /**
+     * Province code for foreigners
+     * @var int
+     */
+    protected $foreignersCode = 30;
 
     /**
      * Length of the different types of identification
@@ -64,6 +70,7 @@ public function validate(string $identification_number)
         $this->provinceCodeValidation($identification_number);
         $this->thirdDigitValidation($identification_number);
         $this->lastsDigitsValidation($identification_number);
+        $this->foreignersValidation($identification_number);
 
         if ($this instanceof PublicRuc || $this instanceof PrivateRuc) {
             $this->moduleElevenValidation($identification_number);
@@ -111,6 +118,23 @@ protected function provinceCodeValidation(string $identification_number): void
             throw new Exception("In your province code must be between 01 and {$this->provinces}.");
         }
     }
+    
+    /**
+     * Validate the province code (first two numbers of CI/RUC)
+     * The first 2 positions correspond to the province where it was issued,
+     * so the first two numbers will not be greater than 24 or less than 1
+     *
+     * @param string $identification_number Identification document
+     * @throws Exception
+     */
+    protected function foreignersValidation(string $identification_number): void
+    {
+        $code = $this->getProvinceCodeValue($identification_number);
+
+        if ($code !== 30) {
+            throw new Exception("The province code for foreigners can only be 30");
+        }
+    }
 
     /**
      * Valid the third digit