Expert guides on domain registration, WHOIS lookup, DNS, SSL, and domain investing.
DNS queries are often transmitted unencrypted, leaving your browsing habits exposed. DNS Over HTTPS (DoH) encrypts those queries to enhance privacy and prevent tampering. This guide explains how DoH works, how to enable it in your browser and operating system, and how to verify it's working using tools like the Whose.Domains DNS Analyzer.
Reverse WHOIS lookup lets you find every domain registered to the same person or organization, revealing hidden connections between websites. This guide explains how reverse WHOIS works, real-world use cases for cybersecurity and competitor research, and actionable tips to get the most out of it. You’ll also learn how to use simple tools like WHOIS Lookup to start your own reverse WHOIS investigations.
Domain hijacking can cripple your online presence, from lost email to stolen traffic. This guide covers proactive prevention tips—like enabling registrar lock and two-factor authentication—plus actionable recovery steps if your domain is taken. Learn how to safeguard your digital assets before it's too late.
DNS CAA (Certification Authority Authorization) records let domain owners specify which certificate authorities (CAs) are allowed to issue SSL/TLS certificates for their domain. By adding a CAA record, you reduce the risk of rogue or unauthorized certificate issuance, closing a common vector for man-in-the-middle attacks. This article explains how CAA records work, how to set them up, and how tools like a DNS analyzer can help you verify your configuration.
Being blacklisted can destroy your email deliverability and tank your website traffic. This guide shows you how to quickly check if your domain is on any major blocklist, explains the most common causes, and gives you a step-by-step action plan to get delisted and stay clean.
A reverse IP lookup reveals all domains hosted on a single server by querying DNS records. This guide explains how to use the technique for security analysis, competitive research, and server management, with practical tips and real-world examples. You'll learn to identify shared hosting risks and uncover hidden relationships between websites.
RDAP is the modern, structured replacement for the aging WHOIS protocol, offering standardized JSON data, better security, and support for all internet number resources. Understanding the differences helps you choose the right tool for domain lookups, IP investigations, and compliance tasks.
DNSSEC (Domain Name System Security Extensions) protects websites from DNS spoofing and cache poisoning by cryptographically signing DNS records. This article explains how DNSSEC works, why it matters, and provides practical steps to enable it on your domain—helping you keep visitors safe from redirect attacks and impersonation.
SSL certificates encrypt your website traffic and build visitor trust. This beginner-friendly guide explains SSL/TLS, certificate types, and how to check any site.
Poor email deliverability can cause your messages to land in spam. Learn how to check and fix SPF, DKIM, and DMARC records for better email delivery.