This report was prepared for the InternetNZ Council in August/September 2023 in collaboration with Laura Dempsey, Cubal Team Ltd, and published by InternetNZ on 2023-10-06. The report provided an external investigation into the circumstances surrounding problems caused with validating .nz DNS names on Monday 2023-05-29 and Tuesday 2023-05-30 due to oversights in the DNSSEC Rollover process (in brief, not sufficiently updated for other DNS Registry changes that had been made in late 2022 and early 2023).

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