If you're old enough (or interested enough) to have spent a lot of time messing around with the ASCII table then you might have run into a strange fact: it's possible to uppercase ASCII text using just bitwise AND. And it turns out that in some situations this isn't just
It’s 9am and CloudFlare has already mitigated three billion malicious requests for our customers today. Six out of every one hundred requests we see are malicious, and increasingly, more of those bad requests are targeting DNS nameservers. DNS is the phone book of the Internet and fundamental to the
DNS, one of the oldest technologies running the Internet, keeps evolving. There is a constant stream of new developments, from DNSSEC, through DNS-over-TLS, to a plentiful supply of fresh EDNS extensions. CC BY-ND 2.0 image by Antarctica Bound New DNS Resource Records types are being added all the time.
CloudFlare is, arguably, the largest third-party DNS Authoritative operator in the world. We manage well over 1 million domains and have registrations in almost every TLD open for registrations. Our role as a DNS operator is to maintain customer information and publish their records in the global DNS. In this
This blog post is a follow-up to our previous introduction to DNSSEC. Read that first if you are not familiar with DNSSEC. DNSSEC is an extension to DNS: it provides a system of trust for DNS records. It’s a major change to one of the core components of the