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Understanding TLD-Specific Information: Where to Find It and What It Means

Where Can I Find TLD-Specific Information and What Does It Mean?

Depending on the TLD (Top-Level Domain = Domain extension like .de) you want to register, transfer, or manage, different rules and requirements may apply. These requirements are defined by the registry operating the TLD and can vary significantly between domain extensions.

To help you understand these requirements, we provide a comprehensive TLD Knowledge Base within our developer documentation:

https://developers.opusdns.com/tld-knowledge-base/

This Knowledge Base contains all relevant information for domain extensions supported by OpusDNS, including registration requirements, lifecycle policies, transfer procedures, DNS capabilities, contact requirements, and registry-specific restrictions.

Understanding TLD Types

We generally distinguish between two categories of TLDs:


Country-Code Top-Level Domains (ccTLDs)

ccTLDs are associated with specific countries or territories and are typically operated by national registries or organizations appointed by them.

Examples:
  • .at (Austria)
  • .de (Germany)
  • .fr (France)

These domains often have country-specific policies, local presence requirements, or unique transfer and renewal procedures.


Generic Top-Level Domains (gTLDs)

gTLDs are not tied to a specific country and are generally available worldwide.

Examples:
  • .com
  • .fashion
  • .berlin
  • .shop

Although many gTLDs follow ICANN standards, individual registries may still define additional rules and operational procedures.


Why Is This Information Important?

Different TLDs may require different information from domain owners and registrars. Common differences include:

  • Required contact roles
  • Transfer procedures
  • DNSSEC support
  • Domain lifecycle and redemption periods
  • WHOIS and RDAP policies
  • Privacy protection availability
  • Local presence requirements
  • Registry-specific dispute resolution processes

Reviewing the TLD Knowledge Base before registering or transferring a domain helps ensure that all requirements are met and avoids delays or failed operations.


How to Interpret a TLD Article

Let's use .at as an example.

General Information

This section provides basic information about the TLD.

Example:
Property Meaning
TLD Type: ccTLD The domain is a country-code TLD associated with Austria.
Registry: nic.at GmbH The organization responsible for operating the .at namespace.
Provisioning Protocol: EPP Domain operations are performed using the Extensible Provisioning Protocol (EPP).
Second-Level Registration: Yes Domains can be registered directly under .at (e.g. example.at).
Accreditation Required: Yes Registrars must be accredited by the registry to manage domains directly.


Domain Lifecycle

This section explains how long domains remain active and what happens during renewals or deletions.

Example:
Property Meaning
Registration Period: 1 year Domains can initially be registered for one year.
Renewal Period: 1 year Renewals extend the domain by one year.
Auto-Renew Enabled: Yes Domains are automatically renewed if configured.
Auto-Renewal Before Expiry: 7 days Renewal is triggered seven days before expiration.
Deletion Policy: Immediate, At expiration Domains are deleted immediately once they expire if not renewed.

This information helps you understand when action is required to prevent domain loss.


Grace Periods

Grace periods define what happens after registration, expiration, or deletion.

Example:
Period Meaning
Redemption Period: 60 days A deleted domain can still be restored during this period.
Pending Restore: 7 days Additional processing period during restoration.
Pending Delete: 59 days Domain is scheduled for final deletion and cannot be restored.

These values are important when recovering accidentally deleted domains.


Domain Characteristics

This section describes technical limitations and capabilities.

Example:
Property Meaning
Domain Length: 1–63 characters Allowed domain name length.
IDN Support: Yes International characters such as ä, ö, ü are supported.
Registry Lock: Yes Additional registry-level protection against unauthorized changes is available.
Premium Domains: No No special premium domain pricing exists.


Contacts & Roles

This section defines which contacts must be provided.

Example:
Property Meaning
Required Contacts: Domain Owner, Technical Contact These contact types must exist for every domain.
Privacy Proxy Allowed: Yes Privacy services can be used.
Thick WHOIS: Yes Contact information is stored directly at the registry.
AuthInfo Required: Yes Authorization codes are required for certain operations.

This section helps determine what information must be collected from your customers.


Nameservers & DNS

This section describes DNS-related capabilities.

Example:
Property Meaning
Nameserver Count: 2–8 Minimum and maximum number of nameservers.
DNSSEC Allowed: Yes DNSSEC can be enabled for additional security.
DNSSEC Required: No DNSSEC is optional.
DNSSEC Mode: DS The registry expects DS records for DNSSEC configuration.

If you operate your own DNS infrastructure, this section is especially important.


Transfer Policy

This section explains how domain transfers work.

Example:
Property Meaning
Transfer Lock Enabled: No Domains are not automatically transfer-locked.
Confirmation Required: Yes (Both parties) Both current and future domain holders must approve the transfer.
Transfer Extends Domain: No A transfer does not add additional registration time.

Transfer policies differ significantly between TLDs and should always be reviewed before initiating a transfer.


WHOIS & RDAP

This section contains information about public domain lookup services.

Example:
Property Meaning
WHOIS Server: whois.nic.at Official WHOIS service for .at domains.


Dispute Resolution

This section explains how domain ownership disputes are handled.

Example:
Property Meaning
Dispute Resolution Available: Yes Formal dispute procedures exist.
Procedure: Domain Dispute Registry-specific dispute process.
UDRP Support: No The standard ICANN UDRP process does not apply.

This is particularly relevant for trademark holders and legal disputes.

Comparing Different TLDs

The value of the Knowledge Base becomes especially clear when comparing TLDs.

For example, .at and .berlin differ in several important ways:

  • .at supports DNSSEC, while .berlin does not.
  • .at uses a 60-day redemption period, while .berlin uses 30 days.
  • .at does not extend the registration period during transfers, while .berlin adds one additional year.
  • .at supports privacy proxy services, while .berlin does not.
  • .berlin follows the ICANN UDRP dispute process, while .at uses its own registry-specific dispute procedure.

Understanding these differences before registering or transferring a domain helps ensure smooth operations and compliance with registry requirements.