Root zone
These servers manage the DNS root zone
all servers delegate to
goog.
These servers manage the goog zone
all servers delegate to
certificatemanager.goog.
These servers manage the certificatemanager.goog zone
all servers delegate to
authorize.certificatemanager.goog.
These servers manage the authorize.certificatemanager.goog zone
all servers delegate to
4.authorize.certificatemanager.goog.
These servers manage the 4.authorize.certificatemanager.goog zone