CentralNic Reseller

We added this module in WHMCS 8.7.

The CentralNic Reseller module allows you to register and manage domains with resellers from the CentralNic group. Currently, this module supports registrations via RRP Proxy.

This module replaces the previous RRPProxy module. It provides the latest and most feature-complete integration for RRP Proxy (now CentralNic Reseller) services.

Supported Features

RegisterTransferRenewRegistrar LockUpdate Nameservers
Update WHOISGet EPP CodeRegister NameserversDNS Record ManagementEmail Forwarding
Domain ReleaseDomain Sync ScriptPremium DomainsTransfer Out AutomationTLD Pricing Sync


To activate and begin using the CentralNic Reseller registrar module:

  1. Log in to the WHMCS Admin Area.
  2. Go to Configuration () > System Settings > Domain Registrars.
  3. Find CentralNic Reseller in the list.
  4. Click Activate.
  5. Enter your CentralNic Reseller credentials and configuration. For more information, see below.
  6. Click Save Changes.

Test Mode

You can use test mode to simulate domain registration and management function without registering a domain or incurring charges. This can be useful to test WHMCS configurations.

To use Test Mode, you must create a test account and enter that password in Test Password.

Proxy Server

This setting allows you to specify the proxy server for incoming requests via the cURL CURLOPT_PROXY option.

  • For more information, see cURL’s documentation.
  • Using a proxy server can improve HTTP communication performance by keeping connections open longer.

This setting is optional.


This setting allows you to choose whether users can configure Domain Name System Security Extensions (DNSSEC) in the WHMCS Client Area.

DNSSEC is a set of IETF specifications for securing information within the DNS system. They provide authentication for the origins of DNS data and denial of existence as well as ensuring data integrity. They do not, however, provide authentication of availability or confidentiality.

If you enable this, DNSSEC Management will display as an option in the Client Area sidebar menu when managing a domain.

Key Data to DS Data Conversion

If CentralNic requires DS Data but receives Key Data, it will convert the Key Data into DS Data. The conversion uses SHA-256 and DSData digest type 2. This conversion ensures compliance with the relevant industry standards.

The module sends the following parameters:

Flags256 (zone signing key) or 257 (key signing key)
Protocol3 (DNSSEC)
  • 8 (RSA/SHA256)
  • 10 (RSA/SHA512)
  • 12 (GOST R 34.10-2001)
  • 13 (ECDSA/SHA-256)
  • 14 (ECDSA/SHA-384)
  • 15 (Ed25519)
  • 16 (Ed448)
While other DNSSEC algorithms exist, CentralNic Reseller cannot support them because it does not support SHA-1. For more information, see RFC 4034.
PubkeyThe public key.

For more information about CentralNic’s data conversion process, see CentralNic Reseller’s DNSSEC documentation and the CentralNic Registry Registrar Operations Manual.

Automatic Registration

WHMCS allows you to set up automatic domain registration on a per-extension basis, enabling you to use different registrars for different TLDs.

To enable automatic registration, see Domain Pricing.

Automatic Domain Synchronization

This module supports automatic domain synchronization for syncing expiry dates and status changes for incoming transfers.

To use this, enable Domain Sync Enabled and configure the domain sync task at Configuration () > System Settings > Automation Settings.


Entity reference not found

This error occurs when the domain does not exist in your CentralNic Reseller account. This message will display when a domain transfer is in progress but will automatically disappear when the transfer is complete.

Last modified: June 24, 2024