What Happens When a Domain Expires? Renewal, Redemption, and Recovery Explained
A domain name does not remain registered forever simply because you purchased it once. Domain registrations have expiration dates, and the registratio...
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DomainScan Blog - Domain, DNS, WHOIS, SSL and Network Insights
DomainScan Blog - Domain, DNS, WHOIS, SSL and Network Insights
Explore the DomainScan Blog for expert guides, tutorials, and insights on domain names, DNS management, WHOIS lookups, SSL certificates, website security, networking, and domain industry best practices.
What Is WHOIS? How to Look Up Domain Registration Information
Learn what WHOIS is, how to check domain registration details using WHOIS and RDAP, and how to understand registrars, expiration dates, and domain sta...
What Is an IP Blocklist? How to Check Why an IP Is Listed and What to Do
Learn what an IP blocklist is, why IP addresses get listed, how DNSBL and RBL systems work, and what to check before requesting removal from a blockli...
What Is an Open Port? How Port Scanning Works and What the Results Mean
Learn what an open port is, how port scanning works, what open, closed, and filtered ports mean, and how to troubleshoot common server port problems.
TLS 1.2 vs TLS 1.3: What Is the Difference and Which Should You Use?
Compare TLS 1.2 and TLS 1.3, including handshake speed, cipher suites, security improvements, compatibility, and which TLS versions modern websites sh...
What Is SNI and Why Is It Important for HTTPS?
Learn what SNI is, how Server Name Indication lets multiple HTTPS websites share one IP address, and how SNI problems cause SSL certificate errors.
What Is a TLS Handshake and How Does HTTPS Establish a Secure Connection?
Learn how the TLS handshake works, how browsers and servers negotiate HTTPS security, validate certificates, exchange keys, and establish encrypted co...
What Is Mixed Content and How Do You Fix It on an HTTPS Website?
Learn what mixed content is, why HTTPS pages load insecure HTTP resources, how browsers handle mixed content, and how to find and fix common mixed con...
What Is HSTS and How Does HTTP Strict Transport Security Work?
Learn what HSTS is, how HTTP Strict Transport Security forces HTTPS, how the Strict-Transport-Security header works, and how to avoid common HSTS mist...