diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3660d3e9..59d46358 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Change Log
 
+## [5.28.0](https://github.com/plivo/plivo-java/tree/v5.28.0) (2023-06-27)
+**Feature - CNAM**
+- Added New Param `cnam` in to the response of the [list all numbers API], [list single number API]
+- Added `cnam` parameter to buy number[Buy a Phone Number]  to configure CNAM while buying a US number
+- Added `callback_url` parameter to buy number[Buy a Phone Number]  to configure CNAM callback url while buying a US number
+- Added `callback_method` parameter to buy number[Buy a Phone Number]  to configure CNAM callback method while buying a US number
+- Added `cnam` parameter to update number[Update an account phone number] to configure CNAM while updating a US number
+- Added `callback_url` parameter to update number[Update an account phone number] to configure CNAM callback url while updating a US number
+- Added `callback_method` parameter to update number[Update an account phone number] to configure CNAM callback method while updating a US number
+
+
 ## [5.27.0](https://github.com/plivo/plivo-java/tree/v5.27.0) (2023-05-02)
 **Feature - CNAM Lookup**
 - Added New Param `cnam_lookup` in to the response of the [list all numbers API], [list single number API]
diff --git a/pom.properties b/pom.properties
index 259edd1b..d63b2c82 100644
--- a/pom.properties
+++ b/pom.properties
@@ -1,5 +1,5 @@
 # Written manually.
 
-version=5.27.0
+version=5.28.0
 groupId=com.plivo
 artifactId=plivo-java
diff --git a/pom.xml b/pom.xml
index 10231e50..9d7bd8fd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.plivo</groupId>
   <artifactId>plivo-java</artifactId>
-  <version>5.27.0</version>
+  <version>5.28.0</version>
   <name>plivo-java</name>
   <description>A Java SDK to make voice calls &amp; send SMS using Plivo and to generate Plivo XML</description>
   <licenses>
diff --git a/src/main/java/com/plivo/api/models/number/Number.java b/src/main/java/com/plivo/api/models/number/Number.java
index 2005d368..e6bf6ab9 100644
--- a/src/main/java/com/plivo/api/models/number/Number.java
+++ b/src/main/java/com/plivo/api/models/number/Number.java
@@ -27,6 +27,8 @@ public class Number extends BaseResource {
   private String tollFreeSmsVerification;
   private String renewalDate;
   private String cnamLookup;
+  private String cnam;
+
 
   public Boolean getActive() {
     return active;
@@ -154,4 +156,8 @@ public String getRenewalDate() {
   public String getCnamLookup() {
     return cnamLookup;
   }
+
+  public String getCnam() {
+    return cnam;
+  }
 }
diff --git a/src/main/java/com/plivo/api/models/number/NumberLister.java b/src/main/java/com/plivo/api/models/number/NumberLister.java
index b593e27c..f4b808df 100644
--- a/src/main/java/com/plivo/api/models/number/NumberLister.java
+++ b/src/main/java/com/plivo/api/models/number/NumberLister.java
@@ -17,6 +17,7 @@ public class NumberLister extends Lister<Number> {
   private String tollFreeSmsVerification;
   private PropertyFilter<String> renewalDate;
   private String cnamLookup;
+  private String cnam;
 
   public NumberType numberType() {
     return this.numberType;
@@ -55,6 +56,9 @@ public PropertyFilter<String> renewalDate() {
   public String cnamLookup() {
     return this.cnamLookup;
   }
+  public String cnam() {
+    return this.cnam;
+  }
 
   public NumberLister numberType(final NumberType numberType) {
     this.numberType = numberType;
@@ -70,6 +74,11 @@ public NumberLister cnamLookup(final String cnamLookup) {
     this.cnamLookup = cnamLookup;
     return this;
   }
+
+  public NumberLister cnam(final String cnam) {
+    this.cnam = cnam;
+    return this;
+  }
   public NumberLister numberStartswith(final String numberStartswith) {
     this.numberStartswith = numberStartswith;
     return this;
diff --git a/src/main/java/com/plivo/api/models/number/NumberUpdater.java b/src/main/java/com/plivo/api/models/number/NumberUpdater.java
index 7a379ea5..37dbd388 100644
--- a/src/main/java/com/plivo/api/models/number/NumberUpdater.java
+++ b/src/main/java/com/plivo/api/models/number/NumberUpdater.java
@@ -10,6 +10,9 @@ public class NumberUpdater extends Updater<NumberUpdateResponse> {
   private String subaccount;
   private String alias;
   private String cnamLookup;
+  private String cnam;
+  private String callbackUrl;
+  private String callbackMethod;
 
   NumberUpdater(final String number) {
     super(number);
@@ -31,6 +34,18 @@ public String cnamLookup() {
     return this.cnamLookup;
   }
 
+  public String cnam() {
+    return this.cnam;
+  }
+
+  public String callbackUrl() {
+    return this.callbackUrl;
+  }
+
+  public String callbackMethod() {
+    return this.callbackMethod;
+  }
+
   public NumberUpdater appId(final String appId) {
     this.appId = appId;
     return this;
@@ -50,10 +65,25 @@ public NumberUpdater cnamLookup(final String cnamLookup) {
     return this;
   }
 
+  public NumberUpdater cnam(final String cnam) {
+    this.cnam = cnam;
+    return this;
+  }
+
+  public NumberUpdater callbackUrl(final String callbackUrl) {
+    this.callbackUrl = callbackUrl;
+    return this;
+  }
+
+  public NumberUpdater callbackMethod(final String callbackMethod) {
+    this.callbackMethod = callbackMethod;
+    return this;
+  }
+
   @Override
   protected void validate() {
-    if (!Utils.anyNotNull(alias, subaccount, appId, cnamLookup)) {
-      throw new IllegalStateException("one of alias, subaccount, appId, cnamLookup must be non-null");
+    if (!Utils.anyNotNull(alias, subaccount, appId, cnamLookup, cnam)) {
+      throw new IllegalStateException("one of alias, subaccount, appId, cnamLookup, cnam must be non-null");
     }
     super.validate();
   }
diff --git a/src/main/java/com/plivo/api/models/number/PhoneNumberCreationStatus.java b/src/main/java/com/plivo/api/models/number/PhoneNumberCreationStatus.java
index 492816bc..1d75e71f 100644
--- a/src/main/java/com/plivo/api/models/number/PhoneNumberCreationStatus.java
+++ b/src/main/java/com/plivo/api/models/number/PhoneNumberCreationStatus.java
@@ -4,6 +4,8 @@ public class PhoneNumberCreationStatus {
 
   private String number;
   private String status;
+  private String NewCnam;
+  private String CnamUpdateStatus;
 
   public String getNumber() {
     return number;
@@ -12,4 +14,12 @@ public String getNumber() {
   public String getStatus() {
     return status;
   }
+
+  public String getNewCnam() {
+    return NewCnam;
+   }
+
+  public String getCnamUpdateStatus() {
+      return CnamUpdateStatus;
+  }
 }
diff --git a/src/main/java/com/plivo/api/models/number/PhoneNumberCreator.java b/src/main/java/com/plivo/api/models/number/PhoneNumberCreator.java
index dbfc3a6e..036fe6df 100644
--- a/src/main/java/com/plivo/api/models/number/PhoneNumberCreator.java
+++ b/src/main/java/com/plivo/api/models/number/PhoneNumberCreator.java
@@ -8,6 +8,9 @@ public class PhoneNumberCreator extends Creator<PhoneNumberCreateResponse> {
   private String number;
   private String appId;
   private String cnamLookup;
+  private String cnam;
+  private String callbackUrl;
+  private String callbackMethod;
 
   public PhoneNumberCreator(String number) {
     if (number == null) {
@@ -25,6 +28,18 @@ public String cnamLookup() {
     return this.cnamLookup;
   }
 
+  public String cnam() {
+    return this.cnam;
+  }
+
+  public String callbackUrl() {
+    return this.callbackUrl;
+  }
+
+  public String callbackMethod() {
+    return this.callbackMethod;
+  }
+
   public PhoneNumberCreator appId(final String appId) {
     this.appId = appId;
     return this;
@@ -35,6 +50,21 @@ public PhoneNumberCreator cnamLookup(final String cnamLookup) {
     return this;
   }
 
+  public PhoneNumberCreator cnam(final String cnam) {
+    this.cnam = cnam;
+    return this;
+  }
+
+  public PhoneNumberCreator callbackMethod(final String callbackMethod) {
+    this.callbackMethod = callbackMethod;
+    return this;
+  }
+
+  public PhoneNumberCreator callbackUrl(final String callbackUrl) {
+    this.callbackUrl = callbackUrl;
+    return this;
+  }
+
   @Override
   protected Call<PhoneNumberCreateResponse> obtainCall() {
     return client().getApiService().phoneNumberCreate(client().getAuthId(), number, this);
diff --git a/src/main/resources/com/plivo/api/version.txt b/src/main/resources/com/plivo/api/version.txt
index aa6269be..e8902c36 100644
--- a/src/main/resources/com/plivo/api/version.txt
+++ b/src/main/resources/com/plivo/api/version.txt
@@ -1 +1 @@
-5.27.0
+5.28.0
diff --git a/src/test/resources/com/plivo/api/numberGetResponse.json b/src/test/resources/com/plivo/api/numberGetResponse.json
index 8fd76879..fa6af6c0 100644
--- a/src/test/resources/com/plivo/api/numberGetResponse.json
+++ b/src/test/resources/com/plivo/api/numberGetResponse.json
@@ -18,5 +18,6 @@
   "tendlc_registration_status": "COMPLETED",
   "toll_free_sms_verification": null,
   "renewal_date": "2023-05-01",
-  "cnam_lookup": "enabled"
+  "cnam_lookup": "enabled",
+  "cnam": "test1"
 }
\ No newline at end of file
diff --git a/src/test/resources/com/plivo/api/numberListResponse.json b/src/test/resources/com/plivo/api/numberListResponse.json
index bf09de6f..76b2e314 100644
--- a/src/test/resources/com/plivo/api/numberListResponse.json
+++ b/src/test/resources/com/plivo/api/numberListResponse.json
@@ -27,7 +27,8 @@
       "tendlc_registration_status": "COMPLETED",
       "toll_free_sms_verification": null,
       "renewal_date": "2023-05-01",
-      "cnam_lookup": "enabled"
+      "cnam_lookup": "enabled",
+      "cnam": "test1"
     },
     {
       "added_on": "2013-01-01",
@@ -48,7 +49,8 @@
       "tendlc_registration_status": "COMPLETED",
       "toll_free_sms_verification": null,
       "renewal_date": "2023-05-01",
-      "cnam_lookup": "enabled"
+      "cnam_lookup": "enabled",
+      "cnam": "test1"
     },
     {
       "added_on": "2013-03-25",
@@ -69,7 +71,8 @@
       "tendlc_registration_status": null,
       "toll_free_sms_verification": "verified",
       "renewal_date": "2023-05-01",
-      "cnam_lookup": "enabled"
+      "cnam_lookup": "enabled",
+      "cnam": "test1"
     }
   ]
 }
\ No newline at end of file