Blog & Resources

A Cloudflare Error 522 means the connection timed out before the origin server could respond. Learn how to audit your DNS records, firewall rules, and SSL configuration to fix this critical outage.

Waiting days for DNS propagation is a myth of poor configuration. Learn the mechanics of TTL caching in AWS Route 53 and how to force near-instant DNS updates during server migrations.

In 2026, unauthenticated email is dead. Learn how to architect strict SPF, DKIM, and DMARC alignments to ensure your SaaS transactional emails actually reach the primary inbox.

A deep dive into how a major ISP misconfigured their BGP routing, causing global latency spikes, and how we identified the culprit using basic diagnostic tools.

Using public resolvers for internal QA testing leads to split-horizon DNS failures and cached misconfigurations. Here is how to test DNS properly.

As mobile carriers enforce IPv6-only networks, a broken AAAA record will silently drop 30% of your mobile traffic. Learn the most common IPv6 misconfigurations.

DNS inherently lacks security. Learn how DNSSEC adds cryptographic signatures to your domain records to prevent cache poisoning, man-in-the-middle attacks, and ensure data integrity.

Running an open DNS resolver makes your server a weapon. Learn how attackers exploit misconfigured DNS servers to launch massive DDoS amplification attacks and how to secure your infrastructure.

Historically, DNS relied almost exclusively on UDP. Today, blocking TCP Port 53 will break your internet. Discover the technical shift driving DNS toward TCP and how to audit your firewalls.

Migrating from on-premise Exchange to Google Workspace or Office 365? Learn the precise, zero-downtime DNS strategy utilizing TTL step-downs and dual-delivery routing.