diff --git a/src/Plivo/Resources/Number/Number.php b/src/Plivo/Resources/Number/Number.php
index 81c88794..3475ef8d 100644
--- a/src/Plivo/Resources/Number/Number.php
+++ b/src/Plivo/Resources/Number/Number.php
@@ -76,6 +76,7 @@ function __construct(BaseClient $client, array $response, $authId)
             'tollFreeSMSVerification' => $response['toll_free_sms_verification'],
             'renewalDate' => $response['renewal_date'],
             'cnamLookup' => isset($response['cnam_lookup']) ? $response['cnam_lookup'] : null,
+            'cnam' => isset($response['cnam']) ? $response['cnam'] : null,
         ];
         $this->pathParams = [
             'authId' => $authId,
diff --git a/src/Plivo/Resources/Number/NumberInterface.php b/src/Plivo/Resources/Number/NumberInterface.php
index 6811d062..84a8ccc4 100644
--- a/src/Plivo/Resources/Number/NumberInterface.php
+++ b/src/Plivo/Resources/Number/NumberInterface.php
@@ -134,7 +134,10 @@ public function get($number)
      *   + [string] app_id - The application id of the application that is to be linked.
      *   + [string] subaccount - The auth_id of the subaccount to which this number should be added. This can only be performed by a main account holder.
      *   + [string] cnam_lookup - The cnam lookup value for the number (Valid values : enabled, disabled).
-     * @return ResponseUpdate
+     *   + [string] cnam - The cnam attached to the number
+     *   + [string] callback_method - method ot attach the cnam
+     *   + [string] callback_url - url to call callback_method for attching cnam
+     * @return NumberUpdateResponse output
      */
     public function update($number, $optionalArgs = [])
     {
@@ -144,11 +147,15 @@ public function update($number, $optionalArgs = [])
         );
 
         $responseContents = $response->getContent();
+        $newCNAM = isset($responseContents['new_cnam']) ? $responseContents['new_cnam'] : null;
+        $cnamUpdateStatus = isset($responseContents['cnam_update_status']) ? $responseContents['cnam_update_status'] : null;
 
         if(!array_key_exists("error",$responseContents)){
-            return new ResponseUpdate(
+            return new NumberUpdateResponse(
                 $responseContents['api_id'],
                 $responseContents['message'],
+                $newCNAM,
+                $cnamUpdateStatus,
                 $response->getStatusCode()
             );
         } else {
diff --git a/src/Plivo/Resources/Number/NumberUpdateResponse.php b/src/Plivo/Resources/Number/NumberUpdateResponse.php
new file mode 100644
index 00000000..3a50d9f7
--- /dev/null
+++ b/src/Plivo/Resources/Number/NumberUpdateResponse.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Plivo\Resources\Number;
+
+
+use Plivo\Resources\ResponseUpdate;
+
+/**
+ * Class NumberUpdateResponse
+ * @package Plivo\Resources\Number
+ */
+class NumberUpdateResponse extends ResponseUpdate
+{
+
+    /**
+     * NumberUpdateResponse constructor.
+     * @param $message
+     * @param $newCNAM
+     * @param $cnamUpdateStatus
+     */
+    public function __construct($apiId, $message, $newCNAM, $cnamUpdateStatus, $statusCode = 200)
+    {
+        parent::__construct($apiId, $message, $statusCode);
+
+        if ($newCNAM !== null){
+            $this->newCNAM = $newCNAM;
+        }
+        if ($cnamUpdateStatus !== null){
+            $this->cnamUpdateStatus = $cnamUpdateStatus;
+        }
+    }
+
+
+}
\ No newline at end of file
diff --git a/src/Plivo/Resources/PhoneNumber/PhoneNumberBuyResponse.php b/src/Plivo/Resources/PhoneNumber/PhoneNumberBuyResponse.php
index a58c6c24..62cfc9af 100644
--- a/src/Plivo/Resources/PhoneNumber/PhoneNumberBuyResponse.php
+++ b/src/Plivo/Resources/PhoneNumber/PhoneNumberBuyResponse.php
@@ -19,14 +19,22 @@ class PhoneNumberBuyResponse extends ResponseUpdate
      * PhoneNumberBuyResponse constructor.
      * @param $message
      * @param $number
+     * @param $newCNAM
+     * @param $cnamUpdateStatus
      * @param $numberStatus
      * @param $status
      */
-    public function __construct($apiID, $message, $number, $numberStatus, $status, $statusCode)
+    public function __construct($apiID, $message, $number, $newCNAM, $cnamUpdateStatus, $numberStatus, $status, $statusCode)
     {
         parent::__construct($apiID, $message, $statusCode);
 
         $this->number = $number;
+        if ($newCNAM !== null){
+            $this->newCNAM = $newCNAM;
+        }
+        if ($cnamUpdateStatus !== null){
+            $this->cnamUpdateStatus = $cnamUpdateStatus;
+        }
         $this->numberStatus = $numberStatus;
         $this->status = $status;
     }
diff --git a/src/Plivo/Resources/PhoneNumber/PhoneNumberInterface.php b/src/Plivo/Resources/PhoneNumber/PhoneNumberInterface.php
index 930d70cc..15ca3cf3 100644
--- a/src/Plivo/Resources/PhoneNumber/PhoneNumberInterface.php
+++ b/src/Plivo/Resources/PhoneNumber/PhoneNumberInterface.php
@@ -90,21 +90,33 @@ public function getList($countryIso, $optionalArgs = [])
      * @param number $phoneNumber
      * @param string|null $appId
      * @param string|null $cnamLookup
+     * @param string|null $cnam
+     * @param string|null $callbackMethod
+     * @param string|null callbackUrl
      * @return PhoneNumberBuyResponse output
      */
-    public function buy($phoneNumber, $appId = null, $cnamLookup = null)
+    public function buy($phoneNumber, $appId = null, $cnamLookup = null, $cnam = null, $callbackMethod = null, $callbackUrl = null)
     {
         $response = $this->client->update(
             $this->uri . $phoneNumber . '/',
-            ['app_id'=>$appId,'cnam_lookup'=>$cnamLookup]
+            ['app_id'=>$appId,'cnam_lookup'=>$cnamLookup, 'cnam'=>$cnam, 'callback_url' =>$callbackMethod, 'callback_method'=>$callbackMethod]
         );
 
         $responseContents = $response->getContent();
+
+        if (array_key_exists("numbers", $responseContents)) {
+            $numbers = $responseContents['numbers'][0];
+            $newCNAM = isset($numbers['new_cnam']) ? $numbers['new_cnam'] : null;
+            $cnamUpdateStatus = isset($numbers['cnam_update_status']) ? $numbers['cnam_update_status'] : null;
+        }
+
         if(!array_key_exists("error",$responseContents)){
             return new PhoneNumberBuyResponse(
                 $responseContents['api_id'],
                 $responseContents['message'],
                 $responseContents['numbers'][0]['number'],
+                $newCNAM,
+                $cnamUpdateStatus,
                 $responseContents['numbers'][0]['status'],
                 $responseContents['status'],
                 $response->getStatusCode()
diff --git a/tests/Mocks/numberGetResponse.json b/tests/Mocks/numberGetResponse.json
index 03d0b660..4226b8d7 100644
--- a/tests/Mocks/numberGetResponse.json
+++ b/tests/Mocks/numberGetResponse.json
@@ -19,6 +19,7 @@
   "voice_rate": "0.00850",
   "mms_enabled": true,
   "mms_rate": "0.00750",
+  "cnam": "plivo",
   "cnam_lookup": "enabled",
   "compliance_application_id": "20372631212782797",
   "compliance_status": "submitted",
diff --git a/tests/Mocks/numberListResponse.json b/tests/Mocks/numberListResponse.json
index 370ded1f..d75980a6 100644
--- a/tests/Mocks/numberListResponse.json
+++ b/tests/Mocks/numberListResponse.json
@@ -28,6 +28,7 @@
       "voice_rate": "0.00850",
       "mms_enabled": true,
       "mms_rate": "0.00950",
+      "cnam": "plivo",
       "cnam_lookup": "enabled",
       "compliance_application_id": "20372631212782797",
       "compliance_status": "submitted",
@@ -56,6 +57,7 @@
       "voice_rate": "0.00850",
       "mms_enabled": true,
       "mms_rate": "0.00750",
+      "cnam": "",
       "cnam_lookup": "enabled",
       "compliance_application_id": "20372631212782797",
       "compliance_status": "submitted",
@@ -84,6 +86,7 @@
       "voice_rate": "0.00850",
       "mms_enabled": true,
       "mms_rate": "0.00850",
+      "cnam": "plivo",
       "cnam_lookup": "disabled",
       "compliance_application_id": "20372631212782799",
       "compliance_status": "submitted",