Articles & Guides
Useful resources for web developers and system administrators
Found 44 · DNS · Reset
DNS
CNAME vs A Record: Differences and When to Use Each
CNAME or A record? Detailed comparison: performance, RFC 1034/1912 constraints, apex domain, CDN, and when each one is the right choice.
DNS
How to Flush DNS Cache: Windows, Mac, Linux, Browsers
Five DNS caches sit between you and an answer, and flushing one leaves four untouched. The copy actually serving you is usually the one you cannot flush.
DNS
How to Check DNS Propagation: 5 Tools and Methods
Check DNS propagation in 2026: 5 best tools, how propagation actually works, dig/nslookup commands, and how to speed it up.
DNS
DNS Not Resolving: 8 Causes and How to Fix
DNS not resolving and the site is down? Learn 8 common causes — from TTL and cache to NS and firewall — with step-by-step diagnostics and tools.
DNS
DNS Records: How to Add, Check and Fix Them — Enterno.io
A practical guide to DNS records: add and edit them in any panel, get TXT right (SPF, DKIM, DMARC), verify with dig, and diagnose failures by symptom.
DNS
Anycast DNS: How It Works, Benefits and Implementation
Learn how anycast routing works for DNS. Understand the benefits for resilience, speed, and DDoS mitigation. Practical implementation guide.
DNS
How to Choose the Perfect Domain Name: A Complete Guide
Learn how to choose the right domain name for your project. TLD selection, branding tips, common mistakes to avoid, and practical recommendations.
DNS
DNS TTL Guide: Optimal Values for Every Record Type
Learn how DNS TTL values affect propagation speed, caching behavior, and migration strategies. Practical recommendations for A, CNAME, MX, TXT, and NS records.
DNS
DNS Failover: Automatic Traffic Switching on Outage
Learn how DNS failover works, how to configure automatic traffic switching, and best practices for achieving high availability with DNS.
DNS
DNS over HTTPS (DoH): Privacy, Security, and How It Works
Learn how DNS over HTTPS encrypts DNS queries, improves privacy, prevents manipulation, and what it means for network security and monitoring.