Be careful where you point to: the dangers of stale DNS records
Guest Post: Tobias Fiebig illustrates how stale DNS records can leave cloud-based hosts vulnerable to exploitation.
Revisiting reverse DNS use
Guest Post: What percentage of IP networks are delegating corresponding reverse DNS zones to one of their authoritative name servers?
How to observe allocated IPv6 addresses
Guest Post: By adapting a previous measuring method, we are able to observe how operators allocate IPv6 addresses more easily.