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dns

DNS CNAME Flattening Explained: How to Use Apex Domains with CDNs and Cloud Services

CNAME flattening lets you point your root domain (like example.com) to CDNs and cloud services by resolving CNAME records at the DNS provider level and returning standard A/AAAA records. This article explains how it works, why it matters, and how to avoid common pitfalls like email conflicts and SSL misconfigurations.

Aug 22, 2026 5 views

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dns

EDNS Client Subnet Explained: How It Improves CDN Performance and DNS Accuracy

EDNS Client Subnet (ECS) is a DNS extension that carries partial client IP information to authoritative name servers, enabling more precise geo-routing and better CDN performance. This article explains the mechanism, real-world impact, and practical configuration steps to get ECS working correctly across your DNS stack.

Aug 13, 2026 11 views

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dns

What Are Glue Records in DNS and When Do You Need Them?

Glue records are essential DNS records that prevent circular dependencies when a domain's nameservers are within the same domain. This article explains what glue records are, how they work, and when you need them, with practical examples and tips for domain owners and administrators.

Jul 22, 2026 30 views