Expert guides on domain registration, WHOIS lookup, DNS, SSL, and domain investing.
RDAP is the modern replacement for WHOIS, offering structured JSON data, HTTPS security, and standardized error responses. This article compares the two protocols and explains why ICANN's mandate makes RDAP essential for domain professionals.
When a domain expires, it goes through a multi-phase lifecycle starting with a grace period, then a redemption period, and finally deletion. Understanding each phase and its associated costs can save you from losing a valuable domain permanently. This guide breaks down the timeline, offers practical tips for prevention, and explains how to recover a domain if you miss a renewal.
Domain status codes (EPP codes) like clientTransferProhibited and serverHold determine what you can and can’t do with your domain. This guide explains the most common codes, what they mean in practice, and how to take corrective action to keep your domain under your control.
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.
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.
Compare the top free WHOIS lookup tools available today. We review accuracy, data freshness, privacy features, and ease of use.
Learn multiple ways to check if any domain name has expired — using WHOIS lookup, RDAP, DNS checks, and dedicated expiry tools.