DNS & Networking Blog
In-depth guides on DNS management, email security, domain administration, and network troubleshooting — written for developers and IT professionals.
What You'll Find Here
The Get DNS INFO blog publishes practical, detailed guides on the topics that matter most to anyone managing domains, email, or network infrastructure. Our articles go beyond surface-level introductions to provide the depth and specificity needed to actually solve problems and make informed decisions.
Whether you are troubleshooting why emails are landing in spam, trying to understand DNS propagation during a hosting migration, setting up email authentication for the first time, or investigating a suspicious domain, our guides provide step-by-step explanations with real examples you can apply immediately.
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All articles on this blog are written by our team of network engineers and DNS specialists based on direct professional experience. Content is regularly reviewed and updated to reflect current DNS standards, email authentication requirements, and best practices. Each article is original, written in-house, and checked for technical accuracy before publication.
All Articles
24 articles
What is DNS? A Complete Guide to the Domain Name System
Learn how DNS works, why it matters for every website and email, and how domain names are translated into IP addresses. A comprehensive guide for beginners and professionals.
DNS Propagation Explained: How Long Does It Take and How to Speed It Up
Understand why DNS changes take time to propagate worldwide, what affects propagation speed, and proven techniques to minimize propagation time when changing DNS records.
Email Authentication: SPF, DKIM, and DMARC Explained
A comprehensive guide to SPF, DKIM, and DMARC email authentication records. Learn how each protocol works, how to configure them correctly, and how they protect your domain from email spoofing.
WHOIS Lookup: How to Find Domain Registration Information
Learn how to use WHOIS lookup to find domain ownership, registration dates, expiry dates, registrar details, and nameservers for any domain name. A complete guide to reading WHOIS records.
DNS Security Best Practices: Protecting Your Domain from Attacks
Learn the essential DNS security measures every domain owner should implement — including DNSSEC, registrar locks, monitoring, and email authentication — to protect against unauthorized transfers and impersonation.
IP Address Lookup: Understanding Geolocation, ISP, and Network Data
Learn how IP address lookup works, what information it reveals about any IP, how accurate IP geolocation is, and practical uses for IP lookup data in networking and security.
SSL/TLS Certificates and HTTPS: A Complete Guide for Website Owners
Understand how SSL/TLS certificates work, why HTTPS is essential for every website, how to choose the right certificate type, and how DNS relates to certificate issuance and validation.
Domain Registration Guide: How to Choose, Register, and Manage Your Domain
A complete guide to domain registration — how to choose the right domain name, select a registrar, understand pricing, manage renewals, and avoid common domain registration mistakes.
Content Delivery Networks (CDN): How They Work and DNS's Role
Learn how Content Delivery Networks work, how DNS enables CDN routing, the difference between Anycast and DNS-based routing, and how to configure your domain's DNS for a CDN.
Network Diagnostics: Essential Tools and Techniques for Troubleshooting
Master the essential network diagnostic tools — ping, traceroute, dig, nslookup, curl, and more — to troubleshoot connectivity issues, DNS problems, and network performance effectively.
Internet Speed Tests: Understanding Your Results and What They Mean
Learn what download speed, upload speed, and latency (ping) actually mean for real-world internet performance, what speeds you need for different activities, and how to interpret speed test results accurately.
Website Performance Optimization: DNS, CDN, and Caching Strategies
Learn how to optimize website performance through DNS configuration, CDN implementation, browser caching, and server-side optimizations. Practical strategies for measurably faster load times.
Understanding Autonomous System Numbers (ASNs) and BGP Routing
Learn how the internet is connected underneath. Understand Autonomous System Numbers (ASNs), Border Gateway Protocol (BGP), and how data travels across global networks.
How to Fix 'Email Going to Spam' - A Deliverability Checklist
Are your emails landing in the spam folder? Follow this definitive checklist covering IP reputation, SPF/DKIM/DMARC authentication, and content formatting.
What is Reverse DNS (rDNS)? Understanding PTR Records
Learn how reverse DNS (rDNS) translates IP addresses back into domain names using PTR records, and why it is indispensable for email server authentication.
IPv4 vs IPv6: Why The Internet is Still Transitioning
Explore the fundamental differences between IPv4 and IPv6, why we ran out of IPv4 addresses, and what the dual-stack future holds for networking.
A Beginner's Guide to Mail Exchanger (MX) Records
Learn what MX records are, how priority hierarchies work, and how to verify your domain's email delivery infrastructure is healthy.
Troubleshooting DNS Outages: How to Read 'dig' and 'nslookup' Output
Master the command line. Learn how to interrogate authoritative name servers using dig and nslookup to diagnose frustrating cache and routing issues.
Cloudflare vs Traditional DNS: What is the Difference?
Compare the performance, security, and proxy routing advantages of using Cloudflare's Anycast DNS over traditional domain registrar nameservers.
What is Domain Drop Catching? How to Acquire Expired Domains
Discover the specialized mechanics behind domain transitions. Learn how domain expiration cycles, redemption periods, and automated monitoring scripts work.
DMARC Policies Explained: None vs Quarantine vs Reject
Understand the three foundational DMARC policies. Learn how to progress from simple monitoring to strict 'Reject' rejection to perfectly secure your domain against spoofing.
The Role of DNS in DDoS Attacks and Mitigation
Explore the dark side of internet infrastructure. Understand how weaponized DNS Amplification attacks work and how modern engineering mitigates massive volumetric strikes.
How DNS Propagation Impacts Website SEO and Downtime
Understand the hidden SEO risks of server migrations. Learn how DNS Time-To-Live (TTL) affects your search rankings and how to execute a zero-downtime transition.
DNS-over-HTTPS (DoH) Explained: Why Privacy Matters in DNS Lookups
Discover why traditional DNS is a massive privacy loophole, how ISPs track your browsing history, and why modern webmasters rely on encrypted DoH for secure diagnostics.
Put Your Knowledge Into Practice
The best way to understand DNS is to inspect it directly. Our free tools let you check real DNS records, monitor propagation, verify email configuration, and investigate any domain instantly.