diff --git a/src/Plugin/Field/FieldFormatter/AddressPhoneNumberDefaultFormatter.php b/src/Plugin/Field/FieldFormatter/AddressPhoneNumberDefaultFormatter.php
new file mode 100644
index 0000000..adebaf0
--- /dev/null
+++ b/src/Plugin/Field/FieldFormatter/AddressPhoneNumberDefaultFormatter.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\address_phonenumber\Plugin\Field\FieldFormatter;
+
+use Drupal\address\Plugin\Field\FieldFormatter\AddressDefaultFormatter;
+use Drupal\Core\Field\FieldItemListInterface;
+
+/**
+ * Class AddressPhoneNumberDefaultFormatter.
+ *
+ * @FieldFormatter(
+ *   id = "address_phone_number_default",
+ *   label = @Translation("Address with Phonenumber"),
+ *   description = @Translation("Display the reference entities’ label with their address phonenumber."),
+ *   field_types = {
+ *     "address_phone_number_item"
+ *   }
+ * )
+ */
+class AddressPhoneNumberDefaultFormatter extends AddressDefaultFormatter {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function viewElements(FieldItemListInterface $items, $langcode) {
+    $elements = parent::viewElements($items, $langcode);
+    $values = $items->getValue();
+    foreach ($elements as $delta => $entity) {
+      $elements[$delta]['#suffix'] = '<br><span class="ct-addr">' . $values[$delta]['address_phonenumber'] . '</span>';
+    }
+    return $elements;
+  }
+
+}
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;
+  }
+
+}
diff --git a/src/Plugin/Field/FieldWidget/AddressPhoneNumberDefaultWidget.php b/src/Plugin/Field/FieldWidget/AddressPhoneNumberDefaultWidget.php
new file mode 100644
index 0000000..6c9ac17
--- /dev/null
+++ b/src/Plugin/Field/FieldWidget/AddressPhoneNumberDefaultWidget.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Drupal\address_phonenumber\Plugin\Field\FieldWidget;
+
+use Drupal\address\Plugin\Field\FieldWidget\AddressDefaultWidget;
+use Drupal\Component\Utility\NestedArray;
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Form\FormStateInterface;
+use \libphonenumber\PhoneNumberUtil;
+use \libphonenumber\NumberParseException;
+
+/**
+ * Class AddressPhoneNumberDefaultWidget.
+ *
+ * @FieldWidget(
+ *   id = "address_phone_number_default",
+ *   label = @Translation("Address with Phonenumber"),
+ *   description = @Translation("An contact text field with an associated Address."),
+ *   field_types = {
+ *     "address_phone_number_item"
+ *   }
+ * )
+ */
+class AddressPhoneNumberDefaultWidget extends AddressDefaultWidget {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
+    $widget = parent::formElement($items, $delta, $element, $form, $form_state);
+    $widget['address']['#type'] = 'address_phone_number_item';
+    $widget['address']['locality'] = [
+      '#weight' => 1,
+    ];
+    $widget['address']['address_phonenumber'] = [
+      '#title' => $this->t('Phone Number'),
+      '#type' => 'textfield',
+      '#required' => TRUE,
+      '#default_value' => isset($items[$delta]->address_phonenumber) ? $items[$delta]->address_phonenumber : NULL,
+      '#weight' => 10,
+      '#states' => [
+        'invisible' => [
+          ':input[name="payment_information[billing_information][field_contact_address][0][address][country_code]"]' => ['value' => ''],
+        ],
+      ],
+      '#element_validate' => array(
+         array($this, 'addressphonenumberValidate'),
+      ),
+
+    ];
+    return $widget;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function addressphonenumberValidate($element, FormStateInterface $form_state, $form) {
+    $form_values = $form_state->getValues();
+    $array_parents = $element['#parents'];
+    if (in_array('payment_information', $array_parents, TRUE)) {
+      if ($form_values['payment_information']['billing_information']['reuse_profile'] == 1) {
+        return;
+      }
+    }
+    $element_name = implode('][', $array_parents);
+    array_pop($array_parents);
+    $telephone = NestedArray::getValue(
+      $form_values,
+      array_merge($array_parents, ['address_phonenumber'])
+    );
+    $country_code = NestedArray::getValue(
+      $form_values,
+      array_merge($array_parents, ['country_code'])
+    );
+    $phone_util = PhoneNumberUtil::getInstance();
+    try {
+      $phone_util_number = $phone_util->parse($telephone, $country_code);
+      $is_possible = $phone_util->isPossibleNumber($phone_util_number);
+      if (!$is_possible) {
+        $form_state->setErrorByName($element_name, 'Please enter valid phone number.');
+      }
+    }
+    catch (NumberParseException $e) {
+      $form_state->setErrorByName($element_name, 'Please enter valid phone number.');
+    }
+  }
+
+}