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Introducing the Centralized Zone Data Service

23 October 2013

The Centralized Zone Data Service (CZDS) is ICANN's solution for scaling zone data transfer as hundreds of new gTLDs are added to the Internet.

Every new gTLD Registry will be required to provide zone data files to approved requestors (e.g. law enforcement agents, IP attorneys, researchers) upon technical delegation of its gTLD. The CZDS will support this requirement by providing a single web platform where requestors and Registries can interact.

CZDS Benefits for Registries

  • CZDS simplifies the process of entering into zone data contracts. Rather than creating and executing a contract for every request, Registries can simply approve or deny requests with one click.
  • Registries can save additional time by appointing ICANN to handle zone data file formatting and transfer (AXFR) instead of using internal resources.

Using CZDS

  • Frequently Asked Questions [PDF, 324 KB]
    Read the questions and answers document created in response to questions posed during the Durban session and throughout CZDS Beta Testing.
  • Registry Operator Updates
    Detailed instructions for navigating the CZDS platform will be provided to new Registries once a Registry Agreement is executed.
  • Questions?
    If you're unable to find the answer you're looking for, email us at

Learn more about CZDS »