This guide explains what registrars need to know and do for the upcoming migration of Radix TLDs from the CentralNic registry platform to Tucows Registry Services. It is intended to help registrars prepare operationally, technically, and administratively ahead of the migration.
Radix TLDs will migrate to Tucows Registry Services on 17 March 2026. This is a backend registry change only and does not affect registrar accreditation or registrant ownership of domains.
What is not changing
- Your registrar accreditation
- Your customers’ domains
- Pricing, policies, or lifecycle rules (all remain ICANN-compliant)
What is changing
- Radix TLDs will move from the CentralNic registry backend to Tucows Registry Services
- All new Radix registrations will be managed on Tucows Registry Service post-migration
- Registrars must onboard via the Tucows onboarding portal
- Updated Radix Registry Registrar Agreements (RRAs)
- New billing and invoicing arrangements
Affected TLDs include:
.online, .site, .store, .website, .space, .press, .uno, .host, .tech, .fun, .in.net, and .pw.
Migration Timeline and Downtime
- Migration date: 17 March 2026
- Planned maintenance window: 00:00–10:00 UTC
During the migration window:
- DNS services will remain fully operational
- WHOIS and RDAP services will remain available
- No domain creates, updates, renewals, transfers, or deletes will be permitted
- Some registry services may be temporarily unavailable
- Registrars will be notified once the transition is complete.
Required Registrar Action: OTE Onboarding and Testing
All registrars are required to onboard and test in the Tucows OTE (Operational Test & Evaluation) environment ahead of migration.
Testing is critical to ensure your systems are fully compatible with Tucows Registry Services before production go-live, especially if you do not currently manage other TLDs on the Tucows platform.
Registrars who do not complete onboarding and testing may experience:
- Connection issues post-migration
- Delays in domain operations
- Increased support requirements during go-live
Onboarding Guidance
New registrars to Tucows Registry Services
New registrars will receive an onboarding email from Tucows containing:
- OTE credentials
- Client private key
- Certificates
- System access details
Important: The onboarding link expires 30 days from the date it is sent.
New registrars must:
- Access the onboarding link before it expires
- Log in to the Tucows OTE environment
- Test required EPP commands
Existing Tucows registrars
If you already work with Tucows Registry Services for other TLDs:
- Your existing EPP credentials will be copied to the Radix OTE and production environments
- No new credentials are required
Production environments are not live yet. Tucows will notify registrars when production access is available.
Radix Registry Environments
OTE (Operational Test & Evaluation)
- EPP Server (TCP 700): epp.ote.radix.host
- Registrar Console:https://console.ote.radix.host
- WHOIS:https://whois.ote.radix.host
Production
- EPP Server (TCP 700): epp.radix.host
- Registrar Console:https://console.radix.host
- WHOIS (TCP 43): whois.radix.host
- RDAP: rdap.radix.host
Recommended OTE Testing
At a minimum, registrars should test the following operations in OTE:
- Domain create
- Renew and restore
- Transfer (in and out)
- Domain updates (nameservers, contacts, locks)
- Delete and restore
- Glue / host object operations (if applicable)
Billing and Invoicing Changes
Separate invoicing
- Radix TLDs will be invoiced separately by Tucows
- Radix billing will no longer be combined with other registry invoices
New bank details for Radix payments
Payments for Radix TLDs must be sent to the following account:
- Beneficiary Name: Radix Technologies Inc SEZC
- Bank: JPMorgan Chase Bank N.A.
- Branch: Hong Kong
- Account Number: 6300211148
- SWIFT: CHASHKHH
- Currency: USD
Prepaid registrars may send funds to this account and have their Tucows Registry Services accounts funded accordingly. Card payments will also be accepted on Tucows Registry Services.
Billing behavior on Tucows Registry Services
How Tucows Registry Services billing is handled for most domain transactions:
- Domain transactions are billed at the time the transaction occurs
- If a domain is deleted within the applicable grace period:
- The transaction fee is automatically refunded at the time of deletion
- This applies to standard domain transactions such as:
- Creates
- Renewals
- Transfers
Exception:
- Auto-renew transactions follow standard auto-renew billing rules and are not billed using the immediate-charge-and-refund model.
What this means for registrars
- Charges appear immediately when a transaction is completed
- Refunds are applied automatically when domains are deleted within grace periods
- No end-of-month “finalization” is required for most transaction types
- Billing visibility is more immediate and transaction-based
Rebates and Historical Records
- Transactions processed on CentralNic will have rebates handled by CentralNic
- Transactions processed on Tucows Registry Services will have rebates handled by Tucows
- Registrars are encouraged to share details of any outstanding rebates as soon as possible
Historical transactions and invoices from CentralNic will not be migrated to Tucows Registry Services. Registrars should download and retain any CentralNic records they may need for future reference.
EPP and Platform Behavior
- No major EPP changes are expected
- Tucows Registry Services uses a clean, RFC-aligned EPP implementation
- Standards-compliant EPP clients should work with minimal or no changes
Registrars should ensure they:
- Test all EPP commands in OTE
- Rely on standard EPP status codes
- Avoid hardcoding registry-specific error messages
Auto-renewals
- Auto-renew billing remains unchanged
- Charges apply at the end of the Auto-Renew Grace Period (ARGP)
Domain locks
Please see Change to Auto-Renew Domain Lifecycle Behavior.
- clientTransferProhibited: registrar-controlled
- serverTransferProhibited: registry-controlled (used sparingly)
Glue and host objects
- Domains with active child hosts cannot be deleted
- All dependencies must be removed before deletion
- Clear EPP error messages are returned when dependencies exist
This behavior is consistent with most major registry platforms.
Support and Contacts
If you did not receive onboarding credentials or need assistance with:
- OTE onboarding
- Missing credentials
- Migration readiness
Contact:
- Support: trs-support@tucows.com
- Escalations: transition@radix.email
Tucows and Radix teams are available to support registrars before, during, and after the migration.
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