Certum Commercial SSL Wildcard Certificate is an advanced cryptographic solution that enables secure data transmission via SSL/TLS protocol for main domains and an unlimited number of subdomains. This certificate ensures confidentiality, integrity and authenticity of transmitted information, which is crucial for companies that want to secure both their main page and subpages.

As one of the longest operating and most reputable certification companies in Europe, Certum enjoys the trust of users all over the world. Certum Commercial SSL Wildcard offers support for both RSA (2048-bit key length) and ECC (Elliptic Curve Cryptography) cryptographic algorithms, which allows you to choose the optimal encryption method, depending on the requirements and needs of the organization. Thanks to its efficiency, the ECC algorithm allows you to achieve the same level of security with a shorter key length, which translates into higher system efficiency.

This certificate complies with the latest security standards, supporting SHA-2 algorithms and TLS 1.2 and 1.3 protocols, which guarantees data protection in accordance with applicable standards. The wildcard function allows you to protect all subdomains without having to issue separate certificates for each of them, which optimizes costs and simplifies certificate management. Certum Commercial SSL Wildcard is also covered by a financial guarantee of up to € 200,000, which is evidence of the confidence and trust that Certum has in its products. The certificate is available in a one- and two-year option, with the possibility of renewal, which allows for flexible adjustment to business needs. The certificate issuance process after domain verification is quick and efficient, which allows for immediate use of SSL/TLS security.

• Unlimited subdomains protection: Wildcard certificate secures not only the main domain but also an unlimited number of subdomains with a single SSL/TLS certificate, simplifying certificate management and reducing administrative costs.
• Compliance with modern cryptographic standards: Certum Commercial SSL Wildcard supports RSA (2048-bit) and ECC cryptographic algorithms, as well as TLS 1.2 and 1.3 protocols, ensuring the highest level of protection and compliance with the latest security requirements.
• High compatibility: The certificate is compatible with a wide range of web browsers, mobile devices and operating systems, including Windows, macOS, iOS, Android and Linux, which guarantees trouble-free operation of security on various platforms.
• Reputation and trust: Certum is one of the most renowned European certification companies, which translates into wide recognition and trust in the certificates issued, increasing the credibility of secured websites.
• Fast validation process: Domain ownership is verified quickly, allowing for a fast certificate issuance and immediate start of security.
• Financial guarantee: Certum Commercial SSL Wildcard is covered by a financial guarantee of up to € 200 000, which demonstrates the reliability and trustworthiness of the certificate and additionally protects the interests of customers in the event of any problems.
• Simplified administration: The wildcard function enables automatic protection of new subdomains, which significantly reduces the workload associated with certificate management in dynamic Internet environments.

Certum Commercial SSL Wildcard Certificate Security Seal is a static trust mark that can be placed on websites secured with this certificate. This static seal demonstrates the use of advanced cryptographic methods to protect the website’s connections, including both the main domain and all subdomains. The seal is a permanent, graphical element that confirms that the website uses an SSL certificate issued by Certum, one of the most reputable certification service providers. The presence of this seal on a website increases user confidence by signaling that the website meets the highest security standards. Although the seal is static and does not offer direct, dynamic information when clicked, its presence still effectively communicates to users the company’s commitment to data protection and online security. This type of seal is a simple but effective marketing tool that can positively impact the company’s image and increase trust in the website.

The validation procedure for the Certum Commercial SSL Wildcard certificate includes several key stages, the purpose of which is to confirm the authenticity of the domain owner and ensure a high level of security. The process begins with placing an order for a certificate, where the user provides information about the main domain and subdomains that are to be protected. After placing the order, Certum begins to verify the domain ownership. This verification is most often done by sending an e-mail to the authorized address assigned to the domain or by entering a specific DNS record. After the verification stage has been successfully completed, Certum begins to generate the SSL Wildcard certificate. This certificate covers the main domain and all of its subdomains, providing them with uniform cryptographic protection. This process is automated, which minimizes the waiting time for the certificate to be issued. After the certificate is generated, it is made available to the user for download and installation on the server, which completes the validation procedure. Certum guarantees that the entire validation procedure meets the highest standards of security and compliance with applicable law. Full validation procedure has been described in our knowledgebase: Validation and verification for Certum Commercial SSL certificate.

Important: Wildcard SSL certificates cannot be verified via file.

The wildcard function in the Certum Commercial SSL Wildcard certificate allows you to secure not only the main domain, but also all of its subdomains with a single SSL/TLS certificate. Thanks to this function, website owners can secure multiple subdomains (e.g. ‘mail.domain.pl’, ‘shop.domain.pl’, ‘blog.domain.pl’) without having to purchase and manage separate certificates for each of them. The wildcard is used in the domain name when generating a certificate, where the asterisk (*) replaces the subdomain, e.g. ‘*.domain.pl’. This solution is extremely effective, especially for organizations managing extensive website structures, because it significantly simplifies the certificate administration process and reduces costs. The wildcard function is especially useful in dynamic environments, where new subdomains are often added, because each new subdomain is automatically protected, without the need to generate a new certificate. Certum Commercial SSL Wildcard with the wildcard feature ensures that all subdomains have the same level of security as the main domain, ensuring consistent protection and the peace of mind that every element of your internet infrastructure is properly secured.

Certum Commercial SSL Wildcard certificate provides broad compatibility with most popular web browsers and mobile devices, which guarantees trouble-free operation of SSL/TLS security on various platforms. The certificate is recognized and accepted by browsers such as Google Chrome, Mozilla Firefox, Safari, Microsoft Edge, Opera and many others, both in desktop and mobile versions. In addition, the certificate works on various operating systems, including Windows, macOS, Linux, iOS and Android, which allows for secure connections regardless of the device used by users. Thanks to compatibility with commonly used browsers and mobile devices, users visiting a site secured with the Certum Commercial SSL Wildcard certificate will not encounter problems with displaying warnings about an insecure connection, which increases their trust and positive experience. This certificate is also compatible with modern cryptographic protocols such as TLS 1.2 and 1.3, which further improves its performance and compatibility on various platforms. As a result, Certum Commercial SSL Wildcard offers comprehensive security for websites and their subdomains, without compromising on compatibility and performance on a wide range of devices. Please check the full list of supported devices and browsers.

Certum Commercial SSL Wildcard certificate user support is available to assist you at every stage of using your certificate, from installation to troubleshooting any issues that may arise. Certum’s technical support team offers assistance with configuring the certificate on various server platforms, including installation and configuration of the appropriate SSL/TLS protocols. In case of difficulties, users can contact technical support through various channels, such as email, phone or an online ticketing system. Certum experts provide support for resolving domain validation issues, certificate renewal, as well as advice on maintaining and managing multiple subdomains covered by the Wildcard certificate. In case of situations requiring rapid intervention, Certum offers priority service to minimize downtime and ensure security continuity. In addition, users can benefit from an extensive knowledge base that includes detailed guides, technical documentation and answers to frequently asked questions, allowing them to solve less complicated issues on their own. Certum focuses on professionalism and efficiency, providing certificate users with the highest level of support.