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Domain Registry

A domain registry is the organization responsible for maintaining the authoritative registration database and infrastructure for a top-level domain.

A domain registry is the organization responsible for maintaining the authoritative registration database for a particular top-level domain.

Registries operate at a different layer from the registrars that sell domain registrations to customers.

ICANN describes the registry as the authoritative master database of names registered within a top-level domain. ICANN's domain-industry glossary

Registry vs. Registrar

Consider a simplified model:

Registrant
    ↓
Registrar
    ↓
Registry
    ↓
Top-Level Domain

The **registrant** holds the registration.

The **registrar** provides the registration service.

The registry operates the TLD-level database.

What the Registry Does

Registry responsibilities can include:

  • Maintaining registered domain data
  • Operating TLD infrastructure
  • Maintaining zone information
  • Supporting registrar interactions
  • Enforcing TLD-level technical policies

Most ordinary website owners rarely need to interact directly with the registry.

Their relationship is normally handled through the registrar.

Why It Matters

Understanding the registry becomes useful when:

  • Troubleshooting registration issues
  • Understanding TLD rules
  • Working with domain transfers
  • Interpreting domain-registration infrastructure
  • Managing specialized country-code domains

It also explains why moving a domain between registrars does not mean changing the TLD itself.

Common Problems

The most common problem is simply confusing the three roles:

  • Registrant
  • Registrar
  • Registry

They sound similar but represent different layers of the domain ecosystem.