DNS Performance 101: Zone Files

DNS is the most important component of the Internet. It is basically responsible for translating hostnames to their respective IP addresses, the process of which is quite simple to understand. DNS directs users to your website based on the address information retrieved through the DNS resolution process. There are several…

Analyzing the Impact of a Public DNS Resolver Outage

DNS is the most important component of the engine that keeps the internet running. If DNS is not managed effectively or the servers go down, applications are inaccessible and users are frustrated. Public DNS servers are becoming the preferred DNS server among the internet population. They improve the online customer…

How To Manage DNS in China

This is a guest blog post from Carl Levine, Senior Technical Evangelist at NS1. Boasting the largest population of internet users in the world, China remains one of the greatest opportunities and risks in the proliferation of an open, and free internet. While the country has been “online” since the…

A Complete Performance Breakdown of 1.1.1.1: Cloudflare’s Public DNS Resolver

I have always been a huge fan of external DNS resolvers such as OpenDNS and Google Public DNS resolvers. I truly believe that they do improve the online customer experience since most ISPs do either a poor job at managing theirs DNS or they do DNS rewrites. Cloudflare recently launched…

Managing DNS Vendors with DNS Monitoring

At Catchpoint, we are constantly monitoring key websites and key infrastructure providers (DNS, Cloud…) to help our customers deliver a positive customer experience. We are always on the lookout for bottlenecks or latency that could impact application performance. Recently, we identified a DNS related issue impacting hundreds of our customers. Based…

An Introduction to DNSSEC

DNS is a fundamental building block of the Internet. Its responsibility is to locate and translate domain names to its corresponding Internet Protocol Addresses (IPv4 and IPv6). Changes and adaptations in the industry have occurred over time; more top-level domains, registries, and registrars have come into existence, mankind witnessed the “Dot-Com” bubble,…