diff --git a/src/Plugin/Field/FieldType/AddressPhoneNumberItem.php b/src/Plugin/Field/FieldType/AddressPhoneNumberItem.php
new file mode 100644
index 0000000..491997a
--- /dev/null
+++ b/src/Plugin/Field/FieldType/AddressPhoneNumberItem.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\address_phonenumber\Plugin\Field\FieldType;
+
+use Drupal\address\Plugin\Field\FieldType\AddressItem;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\Core\TypedData\DataDefinition;
+
+/**
+ * Class AddressPhoneNumberItem.
+ *
+ * @FieldType(
+ *  id = "address_phone_number_item",
+ *  label = @Translation("Address with Phonenumber"),
+ *  description = @Translation("This entity for extending contact field in address module"),
+ *  default_widget = "address_phone_number_default",
+ *  default_formatter = "address_phone_number_default",
+ * )
+ */
+class AddressPhoneNumberItem extends AddressItem {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function schema(FieldStorageDefinitionInterface $field_definition) {
+    $schema = parent::schema($field_definition);
+    $schema['columns']['address_phonenumber'] = [
+      'type' => 'varchar',
+      'length' => 255,
+
+    ];
+    return $schema;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
+    $properties = parent::propertyDefinitions($field_definition);
+    $contact_definition = DataDefinition::create('string')
+      ->setLabel(t('Address Phonenumber'));
+    $properties['address_phonenumber'] = $contact_definition;
+    return $properties;
+  }
+
+}