Delegation Only Zones in BIND 9
Starting in Bind 9.2.2P1, there is a new type of zone called delegation-only. It’s designed to counter wild-card records in TLD‘s, such as *.com. This is sometimes called the “Verisign patch” because, while Verisign was not the first TLD operator to create such a wild-card record, their creation of *.com and the SiteFinder service are …