diff --git a/src/Services/YandexRu.php b/src/Services/YandexRu.php
index e2d4dce..7d36cd7 100644
--- a/src/Services/YandexRu.php
+++ b/src/Services/YandexRu.php
@@ -20,14 +20,17 @@ class YandexRu implements ServiceInterface
 
     public function isSupported(EmailInterface $email) : bool
     {
-        return in_array($email->getDomain(), ['ya.ru', 'yandex.com', 'yandex.ru']);
+        return in_array($email->getDomain(), ['ya.ru', 'yandex.com', 'yandex.ru', 'yandex.by', 'yandex.kz', 'yandex.ua']);
     }
 
     protected function getDomainMapping() : array
     {
         return [
             'ya.ru' => 'yandex.ru',
-            'yandex.com' => 'yandex.ru'
+            'yandex.com' => 'yandex.ru',
+            'yandex.by' => 'yandex.ru',
+            'yandex.kz' => 'yandex.ru',
+            'yandex.ua' => 'yandex.ru'
         ];
     }
 
diff --git a/tests/Services/YandexRuTest.php b/tests/Services/YandexRuTest.php
index 9d74e34..797f7fd 100644
--- a/tests/Services/YandexRuTest.php
+++ b/tests/Services/YandexRuTest.php
@@ -30,6 +30,9 @@ class YandexRuTest extends TestCase
             ['JaneDoe@ya.ru', 'janedoe@yandex.ru'],
             ['Jane.Doe@ya.ru', 'jane-doe@yandex.ru'],
             ['foobar@yandex.com', 'foobar@yandex.ru'],
+            ['foobar@yandex.by', 'foobar@yandex.ru'],
+            ['foobar@yandex.kz', 'foobar@yandex.ru'],
+            ['foobar@yandex.ua', 'foobar@yandex.ru'],
         ];
     }
 
@@ -49,6 +52,9 @@ class YandexRuTest extends TestCase
         return [
             ['yandex.ru', true],
             ['yandex.com', true],
+            ['yandex.by', true],
+            ['yandex.kz', true],
+            ['yandex.ua', true],
             ['yandex.RU', true],
             ['yan.dex.ru', false],
             ['YANDEX.RU', true],