[dns-operations] Against ghost domain name

[Masato Minda]

I have some idea of workaround about ghost domain name.

When the registry must revoke the domain name, it must not remove from
the zone.

1. The registry makes the null name server of that domain name.
2. The registry changes the NS RR of that domain name. The NS RR points
   the null name server of above.
3. After TTL of both parent and child NS RR, the registry removes the
   domain name from zone.
4. The registry cancels the null name server.

After that, there is no ghost domain name.

Is this idea correct?

However, this operation is expensive for the registry.

Thanks in advance.

--
minmin / Masato Minda <minmin at jprs.co.jp>
Research and Development Dept.
Japan Registry Services Co., Ltd. (JPRS)