[dns-operations] which registries test nameservers before delegations?

[Randy Bush]

>> our problem is that, as we do not charge and thus there is no
>> renewal, bit rot is incremental
> 
> Annual checks will address that.  It just requires the will to
> remove broken delegations after a notification and grace period to
> correct the detected issues.

and, at a cost in time, this will improve function significantly?

randy