Domain API v2 | Powerful Integration Tools

Start Building with NiceNIC Domain API v2

API access is free for every active NiceNIC user. No reseller upgrade is required. Configure your API credentials, make a safe test request, then add the domain, DNS, billing, compliance or WHMCS workflows your application needs.

API SANDBOX

Test Your Integration Before Going Live

Use the NiceNIC API Sandbox to test your Domain API integration before moving to production. Validate authentication, API requests, response handling, and your application workflow in a dedicated testing environment.

Whether you are building a reseller platform, hosting system, domain management tool, or custom application, the Sandbox helps you identify integration issues earlier and prepare your workflow for live API operations.

Sandbox Environment

The Sandbox is intended for development and integration testing. Use it to verify request formatting, response parsing, error handling, and your end-to-end application workflow before switching to production.

Sandbox operations do not create real domain orders or incur real charges. Sandbox data may be reset periodically.

Sandbox Credentials

Sign in to API Settings and generate a Sandbox API Secret. Authenticate with your NiceNIC account username and the Sandbox API Secret; do not use your production API Secret for Sandbox requests.

Open API Settings

Sandbox Endpoint

Base Endpoint

https://sandbox-api.nicenic.net/v2/

Authentication Header

Host: sandbox-api.nicenic.net
Authorization: username:sandbox_api_secret
Content-Type: application/json

Test Request

Start with a domain availability request to validate connectivity, authentication, and response handling before testing more complex workflows.

curl "https://sandbox-api.nicenic.net/v2/?category=domain&action=check&domains=example.com" \
  -H "Authorization: username:sandbox_api_secret" \
  -H "Content-Type: application/json"

Before Moving to Production

Confirm authentication, required parameters, success and error response handling, and your complete application workflow in the Sandbox. Then update your integration to use the production endpoint and production API credentials.