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The number of milliseconds that specifies the upper limit on the time interval that can elapse before the zone is no longer authoritative. |
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The minimum TTL field that should be exported with any resource record from this zone. |
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The primary name server responsible for this domain |
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The number of milliseconds before the zone should be refreshed. |
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The responsible mail server for this domain |
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The number of milliseconds that should elapse before a failed refresh should be retried. |
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The version number of the original copy of the zone |