Domain Validation reuse period shortened by 199 days, effective February 25, 2026.

• digicert
• Domain Validation
• DNSSEC
• DigiCert DNSSEC
• SSL
• digicert ssl

DigiCert certificate validity period shortened: 199 days; Domain Validation reuse period shortened by 199 days, effective February 25, 2026.

Wildcard SSL Certificates vs. Multi-Domain SSL Certificates: How to Choose?

• Wildcard SSL Certificates
• Multi-Domain SSL Certificates

Based on the number of domains protected, SSL certificates are divided into single-domain SSL certificates, wildcard SSL certificates, and multi-domain SSL certificates. As the name suggests, a single-domain SSL certificate protects only one domain. However, both wildcard SSL certificates and multi-domain SSL certificates can protect multiple domains. So how do you choose?

What are SSL? TLS? SSL/TLS? HTTPS?

• SSL
• TLS
• HTTPS

When using SSL certificates, you will often encounter terms such as SSL, TLS, SSL/TLS, and HTTPS. What do they stand for? And what is the relationship between them?

Answers to 8 Frequently Asked Questions about IP SSL Certificates

• IP SSL Certificates

In the field of cybersecurity, SSL certificates enable HTTPS encrypted access and trusted identity verification, forming the cornerstone of website security. SSL certificates can be bound to either domain names or IP addresses; IP SSL certificates are used to enable HTTPS encryption for IP addresses.

Common SSL Error Causes and Solutions

• SSL Error
• SSL certificates

SSL certificates enable HTTPS encryption and trusted authentication, ensuring secure network communication between servers and clients. However, if your website's SSL certificate is misconfigured, the domain name is mismatched, or it has expired, SSL errors will occur. This can lead to user distrust, resulting in lost traffic and reputational damage to your website.

Let's Encrypt major changes countdown: TLS/SSL certificate validity reduced to 45 days, domain verification window shortened to 7 hours.

• Let's Encrypt
• TLS/SSL certificate
• 45 days

On December 2, 2025, Let’s Encrypt announced that it will further shorten the validity period of its publicly trusted TLS/SSL certificates from the current 90 days to 45 days by 2028. At the same time, the authorization reuse period for domain name verification will be shortened from the current 30 days to 7 hours.