---
title: "addLoadBalancerListenerCertificate"
slug: "networking-vloadbalancer-loadbalancer-addloadbalancerlistenercertificate"
updated: 2026-09-17T10:12:30Z
published: 2026-09-17T10:12:30Z
canonical: "api.ncloud-docs.com/networking-vloadbalancer-loadbalancer-addloadbalancerlistenercertificate"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# addLoadBalancerListenerCertificate

Available in VPC

Add an SNI-based multi-TLS certificate to a load balancer.

## Request

The following describes the request format for the endpoint. The request format is as follows:

| Method | URI |
| --- | --- |
| GET | /vloadbalancer/v2/addLoadBalancerListenerCertificate |

### Request headers

For information about the headers common to all Load Balancer APIs, see [Load Balancer request headers](/docs/en/networking-vloadbalancer#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request query parameters

You can use the following query parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `regionCode` | String | Optional | Region code for the load balancer instance to which you want to add the certificate - First Region of the getRegionList search result (default) - See [getRegionList](/docs/en/compute-vserver-server-common-getregionlist) |
| `loadBalancerListenerNo` | String | Required | Number of the load balancer listener - See [getLoadBalancerListenerList](/docs/en/networking-vloadbalancer-loadbalancer-getloadbalancerlistenerlist) |
| `sslCertificateNo` | String | Required | SSL certificate number - See [getCertificateList](/docs/en/security-certificatemanager-getcertificatelist) - If the listener's protocol type is `HTTPS` or `TLS`, the SSL certificate must be set |
| `responseFormatType` | String | Optional | Response result format - `xml` (default) \| `json` |

### Request example

The following is a sample request.

```
curl --location 'https://ncloud.apigw.ntruss.com/vloadbalancer/v2/addLoadBalancerListenerCertificate?loadBalancerListenerNo=******&sslCertificateNo=*****' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## Response

The following describes the response format.

### Response body

See [loadBalancerListenerCertificateList](/docs/en/common-vapidatatype-loadbalancerlistenercertificatelist) for the response body.

### Response status codes

For information about the HTTP status codes common to all Load Balancer APIs, see [Load Balancer response status codes](/docs/en/networking-vloadbalancer#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The following is a sample response.

```
<addLoadBalancerListenerCertificateResponse>
    <requestId></requestId>
    <returnCode>0</returnCode>
    <returnMessage>success</returnMessage>
    <totalRows>1</totalRows>
    <loadBalancerListenerCertificateList>
        <loadBalancerListenerCertificate>
            <sslCertificateNo>*****</sslCertificateNo>
            <memberNo>*******</memberNo>
            <sslCertificateName>YOUR_CERTIFICATE</sslCertificateName>
            <domainAddress>***.com</domainAddress>
            <validEndDate>2025-06-20 20:59:59</validEndDate>
            <isDefault>true</isDefault>
            <statusCode>1</statusCode>
            <statusName>Normal</statusName>
        </loadBalancerListenerCertificate>
    </loadBalancerListenerCertificateList>
</addLoadBalancerListenerCertificateResponse>
```