diff --git a/services/dns/CHANGELOG.md b/services/dns/CHANGELOG.md
index 214e8f9b..17e4daa2 100644
--- a/services/dns/CHANGELOG.md
+++ b/services/dns/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v0.12.1 (2024-12-16)
+
+- **Bugfix:** Correctly handle nullable attributes in model types
+
 ## v0.12.0 (2024-11-20)
 
 - **Feature:** New models `ZoneModelsImportRecordModel` and `ZoneModelsImportZoneJson`
diff --git a/services/dns/model_clone_zone_payload.go b/services/dns/model_clone_zone_payload.go
index 3e12e066..8963ccd4 100644
--- a/services/dns/model_clone_zone_payload.go
+++ b/services/dns/model_clone_zone_payload.go
@@ -116,7 +116,7 @@ func (o *CloneZonePayload) SetDescription(v *string) {
 
 // GetDnsName returns the DnsName field value
 func (o *CloneZonePayload) GetDnsName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.DnsName) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_create_label_payload.go b/services/dns/model_create_label_payload.go
index adcfabcf..ffdb3b33 100644
--- a/services/dns/model_create_label_payload.go
+++ b/services/dns/model_create_label_payload.go
@@ -48,7 +48,7 @@ func NewCreateLabelPayloadWithDefaults() *CreateLabelPayload {
 
 // GetKey returns the Key field value
 func (o *CreateLabelPayload) GetKey() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Key) {
 		var ret *string
 		return ret
 	}
@@ -72,7 +72,7 @@ func (o *CreateLabelPayload) SetKey(v *string) {
 
 // GetValue returns the Value field value
 func (o *CreateLabelPayload) GetValue() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Value) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_create_record_set_payload.go b/services/dns/model_create_record_set_payload.go
index c5fd310f..8402f14a 100644
--- a/services/dns/model_create_record_set_payload.go
+++ b/services/dns/model_create_record_set_payload.go
@@ -90,7 +90,7 @@ func (o *CreateRecordSetPayload) SetComment(v *string) {
 
 // GetName returns the Name field value
 func (o *CreateRecordSetPayload) GetName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Name) {
 		var ret *string
 		return ret
 	}
@@ -114,7 +114,7 @@ func (o *CreateRecordSetPayload) SetName(v *string) {
 
 // GetRecords returns the Records field value
 func (o *CreateRecordSetPayload) GetRecords() *[]RecordPayload {
-	if o == nil {
+	if o == nil || IsNil(o.Records) {
 		var ret *[]RecordPayload
 		return ret
 	}
@@ -170,7 +170,7 @@ func (o *CreateRecordSetPayload) SetTtl(v *int64) {
 
 // GetType returns the Type field value
 func (o *CreateRecordSetPayload) GetType() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Type) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_create_zone_payload.go b/services/dns/model_create_zone_payload.go
index 8d2536e5..610cc5a4 100644
--- a/services/dns/model_create_zone_payload.go
+++ b/services/dns/model_create_zone_payload.go
@@ -216,7 +216,7 @@ func (o *CreateZonePayload) SetDescription(v *string) {
 
 // GetDnsName returns the DnsName field value
 func (o *CreateZonePayload) GetDnsName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.DnsName) {
 		var ret *string
 		return ret
 	}
@@ -304,7 +304,7 @@ func (o *CreateZonePayload) SetIsReverseZone(v *bool) {
 
 // GetName returns the Name field value
 func (o *CreateZonePayload) GetName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Name) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_import_record_sets_response.go b/services/dns/model_import_record_sets_response.go
index 9a45f419..ef7ebff7 100644
--- a/services/dns/model_import_record_sets_response.go
+++ b/services/dns/model_import_record_sets_response.go
@@ -78,7 +78,7 @@ func (o *ImportRecordSetsResponse) SetMessage(v *string) {
 
 // GetSummary returns the Summary field value
 func (o *ImportRecordSetsResponse) GetSummary() *ImportSummary {
-	if o == nil {
+	if o == nil || IsNil(o.Summary) {
 		var ret *ImportSummary
 		return ret
 	}
diff --git a/services/dns/model_label.go b/services/dns/model_label.go
index d228500e..3d2a0fb0 100644
--- a/services/dns/model_label.go
+++ b/services/dns/model_label.go
@@ -48,7 +48,7 @@ func NewLabelWithDefaults() *Label {
 
 // GetKey returns the Key field value
 func (o *Label) GetKey() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Key) {
 		var ret *string
 		return ret
 	}
@@ -72,7 +72,7 @@ func (o *Label) SetKey(v *string) {
 
 // GetValue returns the Value field value
 func (o *Label) GetValue() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Value) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_list_record_sets_response.go b/services/dns/model_list_record_sets_response.go
index 36dec98e..f2e0c38f 100644
--- a/services/dns/model_list_record_sets_response.go
+++ b/services/dns/model_list_record_sets_response.go
@@ -55,7 +55,7 @@ func NewListRecordSetsResponseWithDefaults() *ListRecordSetsResponse {
 
 // GetItemsPerPage returns the ItemsPerPage field value
 func (o *ListRecordSetsResponse) GetItemsPerPage() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.ItemsPerPage) {
 		var ret *int64
 		return ret
 	}
@@ -111,7 +111,7 @@ func (o *ListRecordSetsResponse) SetMessage(v *string) {
 
 // GetRrSets returns the RrSets field value
 func (o *ListRecordSetsResponse) GetRrSets() *[]RecordSet {
-	if o == nil {
+	if o == nil || IsNil(o.RrSets) {
 		var ret *[]RecordSet
 		return ret
 	}
@@ -135,7 +135,7 @@ func (o *ListRecordSetsResponse) SetRrSets(v *[]RecordSet) {
 
 // GetTotalItems returns the TotalItems field value
 func (o *ListRecordSetsResponse) GetTotalItems() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.TotalItems) {
 		var ret *int64
 		return ret
 	}
@@ -159,7 +159,7 @@ func (o *ListRecordSetsResponse) SetTotalItems(v *int64) {
 
 // GetTotalPages returns the TotalPages field value
 func (o *ListRecordSetsResponse) GetTotalPages() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.TotalPages) {
 		var ret *int64
 		return ret
 	}
diff --git a/services/dns/model_list_zones_response.go b/services/dns/model_list_zones_response.go
index ac8da81d..efc7f7b1 100644
--- a/services/dns/model_list_zones_response.go
+++ b/services/dns/model_list_zones_response.go
@@ -55,7 +55,7 @@ func NewListZonesResponseWithDefaults() *ListZonesResponse {
 
 // GetItemsPerPage returns the ItemsPerPage field value
 func (o *ListZonesResponse) GetItemsPerPage() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.ItemsPerPage) {
 		var ret *int64
 		return ret
 	}
@@ -111,7 +111,7 @@ func (o *ListZonesResponse) SetMessage(v *string) {
 
 // GetTotalItems returns the TotalItems field value
 func (o *ListZonesResponse) GetTotalItems() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.TotalItems) {
 		var ret *int64
 		return ret
 	}
@@ -135,7 +135,7 @@ func (o *ListZonesResponse) SetTotalItems(v *int64) {
 
 // GetTotalPages returns the TotalPages field value
 func (o *ListZonesResponse) GetTotalPages() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.TotalPages) {
 		var ret *int64
 		return ret
 	}
@@ -159,7 +159,7 @@ func (o *ListZonesResponse) SetTotalPages(v *int64) {
 
 // GetZones returns the Zones field value
 func (o *ListZonesResponse) GetZones() *[]Zone {
-	if o == nil {
+	if o == nil || IsNil(o.Zones) {
 		var ret *[]Zone
 		return ret
 	}
diff --git a/services/dns/model_move_code_response.go b/services/dns/model_move_code_response.go
index 33fd6e8b..33c350e8 100644
--- a/services/dns/model_move_code_response.go
+++ b/services/dns/model_move_code_response.go
@@ -52,7 +52,7 @@ func NewMoveCodeResponseWithDefaults() *MoveCodeResponse {
 
 // GetCode returns the Code field value
 func (o *MoveCodeResponse) GetCode() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Code) {
 		var ret *string
 		return ret
 	}
@@ -76,7 +76,7 @@ func (o *MoveCodeResponse) SetCode(v *string) {
 
 // GetExpiresAt returns the ExpiresAt field value
 func (o *MoveCodeResponse) GetExpiresAt() *string {
-	if o == nil {
+	if o == nil || IsNil(o.ExpiresAt) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_move_zone_payload.go b/services/dns/model_move_zone_payload.go
index 0c7a97bb..1e1b8a88 100644
--- a/services/dns/model_move_zone_payload.go
+++ b/services/dns/model_move_zone_payload.go
@@ -50,7 +50,7 @@ func NewMoveZonePayloadWithDefaults() *MoveZonePayload {
 
 // GetCode returns the Code field value
 func (o *MoveZonePayload) GetCode() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Code) {
 		var ret *string
 		return ret
 	}
@@ -74,7 +74,7 @@ func (o *MoveZonePayload) SetCode(v *string) {
 
 // GetZoneDnsName returns the ZoneDnsName field value
 func (o *MoveZonePayload) GetZoneDnsName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.ZoneDnsName) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_partial_update_record_payload.go b/services/dns/model_partial_update_record_payload.go
index 25c07273..d315057d 100644
--- a/services/dns/model_partial_update_record_payload.go
+++ b/services/dns/model_partial_update_record_payload.go
@@ -49,7 +49,7 @@ func NewPartialUpdateRecordPayloadWithDefaults() *PartialUpdateRecordPayload {
 
 // GetAction returns the Action field value
 func (o *PartialUpdateRecordPayload) GetAction() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Action) {
 		var ret *string
 		return ret
 	}
@@ -73,7 +73,7 @@ func (o *PartialUpdateRecordPayload) SetAction(v *string) {
 
 // GetRecords returns the Records field value
 func (o *PartialUpdateRecordPayload) GetRecords() *[]RecordPayload {
-	if o == nil {
+	if o == nil || IsNil(o.Records) {
 		var ret *[]RecordPayload
 		return ret
 	}
diff --git a/services/dns/model_record.go b/services/dns/model_record.go
index 7e00f59c..44eb1d96 100644
--- a/services/dns/model_record.go
+++ b/services/dns/model_record.go
@@ -50,7 +50,7 @@ func NewRecordWithDefaults() *Record {
 
 // GetContent returns the Content field value
 func (o *Record) GetContent() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Content) {
 		var ret *string
 		return ret
 	}
@@ -74,7 +74,7 @@ func (o *Record) SetContent(v *string) {
 
 // GetId returns the Id field value
 func (o *Record) GetId() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Id) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_record_payload.go b/services/dns/model_record_payload.go
index c191d7c0..cf387bab 100644
--- a/services/dns/model_record_payload.go
+++ b/services/dns/model_record_payload.go
@@ -46,7 +46,7 @@ func NewRecordPayloadWithDefaults() *RecordPayload {
 
 // GetContent returns the Content field value
 func (o *RecordPayload) GetContent() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Content) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_record_set.go b/services/dns/model_record_set.go
index c9b2289d..35817eb9 100644
--- a/services/dns/model_record_set.go
+++ b/services/dns/model_record_set.go
@@ -152,7 +152,7 @@ func (o *RecordSet) SetComment(v *string) {
 
 // GetCreationFinished returns the CreationFinished field value
 func (o *RecordSet) GetCreationFinished() *string {
-	if o == nil {
+	if o == nil || IsNil(o.CreationFinished) {
 		var ret *string
 		return ret
 	}
@@ -176,7 +176,7 @@ func (o *RecordSet) SetCreationFinished(v *string) {
 
 // GetCreationStarted returns the CreationStarted field value
 func (o *RecordSet) GetCreationStarted() *string {
-	if o == nil {
+	if o == nil || IsNil(o.CreationStarted) {
 		var ret *string
 		return ret
 	}
@@ -232,7 +232,7 @@ func (o *RecordSet) SetError(v *string) {
 
 // GetId returns the Id field value
 func (o *RecordSet) GetId() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Id) {
 		var ret *string
 		return ret
 	}
@@ -256,7 +256,7 @@ func (o *RecordSet) SetId(v *string) {
 
 // GetName returns the Name field value
 func (o *RecordSet) GetName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Name) {
 		var ret *string
 		return ret
 	}
@@ -280,7 +280,7 @@ func (o *RecordSet) SetName(v *string) {
 
 // GetRecords returns the Records field value
 func (o *RecordSet) GetRecords() *[]Record {
-	if o == nil {
+	if o == nil || IsNil(o.Records) {
 		var ret *[]Record
 		return ret
 	}
@@ -304,7 +304,7 @@ func (o *RecordSet) SetRecords(v *[]Record) {
 
 // GetState returns the State field value
 func (o *RecordSet) GetState() *string {
-	if o == nil {
+	if o == nil || IsNil(o.State) {
 		var ret *string
 		return ret
 	}
@@ -328,7 +328,7 @@ func (o *RecordSet) SetState(v *string) {
 
 // GetTtl returns the Ttl field value
 func (o *RecordSet) GetTtl() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.Ttl) {
 		var ret *int64
 		return ret
 	}
@@ -352,7 +352,7 @@ func (o *RecordSet) SetTtl(v *int64) {
 
 // GetType returns the Type field value
 func (o *RecordSet) GetType() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Type) {
 		var ret *string
 		return ret
 	}
@@ -376,7 +376,7 @@ func (o *RecordSet) SetType(v *string) {
 
 // GetUpdateFinished returns the UpdateFinished field value
 func (o *RecordSet) GetUpdateFinished() *string {
-	if o == nil {
+	if o == nil || IsNil(o.UpdateFinished) {
 		var ret *string
 		return ret
 	}
@@ -400,7 +400,7 @@ func (o *RecordSet) SetUpdateFinished(v *string) {
 
 // GetUpdateStarted returns the UpdateStarted field value
 func (o *RecordSet) GetUpdateStarted() *string {
-	if o == nil {
+	if o == nil || IsNil(o.UpdateStarted) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_record_set_response.go b/services/dns/model_record_set_response.go
index a17475b5..fc1d8203 100644
--- a/services/dns/model_record_set_response.go
+++ b/services/dns/model_record_set_response.go
@@ -78,7 +78,7 @@ func (o *RecordSetResponse) SetMessage(v *string) {
 
 // GetRrset returns the Rrset field value
 func (o *RecordSetResponse) GetRrset() *RecordSet {
-	if o == nil {
+	if o == nil || IsNil(o.Rrset) {
 		var ret *RecordSet
 		return ret
 	}
diff --git a/services/dns/model_validate_move_code_payload.go b/services/dns/model_validate_move_code_payload.go
index 2949988a..5a31af51 100644
--- a/services/dns/model_validate_move_code_payload.go
+++ b/services/dns/model_validate_move_code_payload.go
@@ -46,7 +46,7 @@ func NewValidateMoveCodePayloadWithDefaults() *ValidateMoveCodePayload {
 
 // GetCode returns the Code field value
 func (o *ValidateMoveCodePayload) GetCode() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Code) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_zone.go b/services/dns/model_zone.go
index ad2e47fb..693c19f6 100644
--- a/services/dns/model_zone.go
+++ b/services/dns/model_zone.go
@@ -128,7 +128,7 @@ func NewZoneWithDefaults() *Zone {
 
 // GetAcl returns the Acl field value
 func (o *Zone) GetAcl() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Acl) {
 		var ret *string
 		return ret
 	}
@@ -216,7 +216,7 @@ func (o *Zone) SetContactEmail(v *string) {
 
 // GetCreationFinished returns the CreationFinished field value
 func (o *Zone) GetCreationFinished() *string {
-	if o == nil {
+	if o == nil || IsNil(o.CreationFinished) {
 		var ret *string
 		return ret
 	}
@@ -240,7 +240,7 @@ func (o *Zone) SetCreationFinished(v *string) {
 
 // GetCreationStarted returns the CreationStarted field value
 func (o *Zone) GetCreationStarted() *string {
-	if o == nil {
+	if o == nil || IsNil(o.CreationStarted) {
 		var ret *string
 		return ret
 	}
@@ -264,7 +264,7 @@ func (o *Zone) SetCreationStarted(v *string) {
 
 // GetDefaultTTL returns the DefaultTTL field value
 func (o *Zone) GetDefaultTTL() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.DefaultTTL) {
 		var ret *int64
 		return ret
 	}
@@ -320,7 +320,7 @@ func (o *Zone) SetDescription(v *string) {
 
 // GetDnsName returns the DnsName field value
 func (o *Zone) GetDnsName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.DnsName) {
 		var ret *string
 		return ret
 	}
@@ -376,7 +376,7 @@ func (o *Zone) SetError(v *string) {
 
 // GetExpireTime returns the ExpireTime field value
 func (o *Zone) GetExpireTime() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.ExpireTime) {
 		var ret *int64
 		return ret
 	}
@@ -400,7 +400,7 @@ func (o *Zone) SetExpireTime(v *int64) {
 
 // GetId returns the Id field value
 func (o *Zone) GetId() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Id) {
 		var ret *string
 		return ret
 	}
@@ -488,7 +488,7 @@ func (o *Zone) SetLabels(v *[]Label) {
 
 // GetName returns the Name field value
 func (o *Zone) GetName() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Name) {
 		var ret *string
 		return ret
 	}
@@ -512,7 +512,7 @@ func (o *Zone) SetName(v *string) {
 
 // GetNegativeCache returns the NegativeCache field value
 func (o *Zone) GetNegativeCache() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.NegativeCache) {
 		var ret *int64
 		return ret
 	}
@@ -568,7 +568,7 @@ func (o *Zone) SetPrimaries(v *[]string) {
 
 // GetPrimaryNameServer returns the PrimaryNameServer field value
 func (o *Zone) GetPrimaryNameServer() *string {
-	if o == nil {
+	if o == nil || IsNil(o.PrimaryNameServer) {
 		var ret *string
 		return ret
 	}
@@ -624,7 +624,7 @@ func (o *Zone) SetRecordCount(v *int64) {
 
 // GetRefreshTime returns the RefreshTime field value
 func (o *Zone) GetRefreshTime() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.RefreshTime) {
 		var ret *int64
 		return ret
 	}
@@ -648,7 +648,7 @@ func (o *Zone) SetRefreshTime(v *int64) {
 
 // GetRetryTime returns the RetryTime field value
 func (o *Zone) GetRetryTime() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.RetryTime) {
 		var ret *int64
 		return ret
 	}
@@ -672,7 +672,7 @@ func (o *Zone) SetRetryTime(v *int64) {
 
 // GetSerialNumber returns the SerialNumber field value
 func (o *Zone) GetSerialNumber() *int64 {
-	if o == nil {
+	if o == nil || IsNil(o.SerialNumber) {
 		var ret *int64
 		return ret
 	}
@@ -696,7 +696,7 @@ func (o *Zone) SetSerialNumber(v *int64) {
 
 // GetState returns the State field value
 func (o *Zone) GetState() *string {
-	if o == nil {
+	if o == nil || IsNil(o.State) {
 		var ret *string
 		return ret
 	}
@@ -720,7 +720,7 @@ func (o *Zone) SetState(v *string) {
 
 // GetType returns the Type field value
 func (o *Zone) GetType() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Type) {
 		var ret *string
 		return ret
 	}
@@ -744,7 +744,7 @@ func (o *Zone) SetType(v *string) {
 
 // GetUpdateFinished returns the UpdateFinished field value
 func (o *Zone) GetUpdateFinished() *string {
-	if o == nil {
+	if o == nil || IsNil(o.UpdateFinished) {
 		var ret *string
 		return ret
 	}
@@ -768,7 +768,7 @@ func (o *Zone) SetUpdateFinished(v *string) {
 
 // GetUpdateStarted returns the UpdateStarted field value
 func (o *Zone) GetUpdateStarted() *string {
-	if o == nil {
+	if o == nil || IsNil(o.UpdateStarted) {
 		var ret *string
 		return ret
 	}
@@ -792,7 +792,7 @@ func (o *Zone) SetUpdateStarted(v *string) {
 
 // GetVisibility returns the Visibility field value
 func (o *Zone) GetVisibility() *string {
-	if o == nil {
+	if o == nil || IsNil(o.Visibility) {
 		var ret *string
 		return ret
 	}
diff --git a/services/dns/model_zone_response.go b/services/dns/model_zone_response.go
index 9620a273..117b75a1 100644
--- a/services/dns/model_zone_response.go
+++ b/services/dns/model_zone_response.go
@@ -78,7 +78,7 @@ func (o *ZoneResponse) SetMessage(v *string) {
 
 // GetZone returns the Zone field value
 func (o *ZoneResponse) GetZone() *Zone {
-	if o == nil {
+	if o == nil || IsNil(o.Zone) {
 		var ret *Zone
 		return ret
 	}