According to research released by Infoblox and The Measurement Factory, there has been a dramatic increase in the percentage of external name servers that are open to recursion. The study put the latest figure at 79.6 percent, a 27 percent increase from 2007. The number of DNSSEC signed zones increased by roughly 300 percent indicating that DNSSec is gaining momentum. However, in raw numbers the amount of. DNSSE signed zones isminiscule next to the total number of zones out there.
Source: https://threatpost.com/dnssec-usage-expands-111609/73102/