# Definition von localhost
server:
    local-data: "localhost. 3600 IN A 127.53.53.1"
server:
    local-data: "localhost.localdomain. 3600 IN A 127.53.53.1"
    
# Beispiel für eine zu blockierende Domain
server:
    local-data: "ad2.doubleclick.net 3600 IN A 127.53.53.1"
#    ...