What are single-domain SSL certificates?

Securing your website starts with the right tools, and a single-domain SSL certificate is one of them. This type of SSL certificate protects a single domain or subdomain, encrypting data shared between your website and its visitors to keep it secure.

In this guide, we’ll break down what single-domain SSL certificates are, how they work, their benefits, and how to get started with one. Whether you’re a seasoned developer or exploring SSL certificates for the first time, you’ll find practical insights to help you improve your website’s security with confidence.

Understanding single-domain SSL

SSL, or Secure Socket Layer, is a standard security protocol that ensures the data exchanged between a website and its visitors remains private and secure. By encrypting the information transmitted, SSL prevents unauthorized access and protects sensitive data such as passwords, credit card details, and personal information. 

For website owners, SSL is not just about security—it’s also a trust signal. Visitors can recognize SSL-protected websites by the padlock icon in the browser’s address bar, providing reassurance that their connection is secure.

There are various types of SSL certificates. A single-domain SSL certificate is designed to protect one specific domain or subdomain, ensuring secure communication between your website and its visitors. 

Unlike wildcard SSLs that secure a domain and its subdomains, or multi-domain SSLs that cover multiple domains, a single domain SSL focuses solely on one web address. This targeted protection encrypts all data exchanged between the server and users, preventing unauthorized access and safeguarding sensitive information.

Benefits of a single-domain SSL certificate

Enhanced security for website visitors

One of the main benefits of a single-domain SSL certificate is the enhanced security it offers for your website visitors. By encrypting data exchanges, it ensures sensitive information stays confidential and safe from cyber threats. This is especially critical for sites handling personal data, such as e-commerce platforms, online banking, or membership portals. 

With online users becoming more security-conscious, the padlock icon in the browser’s address bar signals a secure connection, reassuring visitors that their information is protected. 

Beyond encryption, SSL also helps safeguard your website against phishing attacks and data breaches, reducing risks that could impact both your business and your customers.

Boost customer trust and credibility

Another key advantage of using a single-domain SSL certificate is the boost it provides to customer trust and credibility. When visitors see the padlock icon and the "https" prefix in your URL, they immediately recognize that your site is secure. This reassurance is essential, especially for websites handling transactions or requesting personal information, as it encourages users to interact confidently with your site.

SSL encryption also demonstrates your commitment to safeguarding customer data, setting your website apart from competitors who may not have implemented this critical security measure. Beyond building trust, it can also impact your site’s visibility. Search engines like Google consider SSL a ranking factor, meaning that securing your domain with SSL can enhance both your credibility and your position in search results.

Better search engine ranking

Another benefit of using a single-domain SSL certificate is the potential for improved search engine rankings. Search engines like Google prioritize websites with SSL certificates, aiming to deliver safe and secure browsing experiences for their users. By securing your site with a single domain SSL, you signal to search engines that your website is trustworthy and legitimate, which can positively impact your position in search results.

This boost in ranking can lead to greater visibility, increased traffic, and ultimately higher conversion rates. Additionally, as online users become more aware of security risks, they are more likely to click on websites displaying the secure "https" prefix, further enhancing your site

Single-domain SSL certificate features

The following features apply to single-domain SSL certificates from Sectigo, bought at Openprovider.

*Price depends on validation level and Membership tier.

Single-domain SSL vs. wildcard SSL

Unlike a single-domain SSL, which just protects one domain and no subdomains, a wildcard SSL certificate secures a domain and all its subdomains under one certificate. This option is particularly beneficial for businesses with multiple subdomains, as it simplifies management and can be more cost-effective over time.

However, wildcard SSLs are typically more expensive upfront than single-domain SSL certificates. Managing a wildcard SSL can also be more complex, especially if you have numerous subdomains with differing security needs.

Single-domain SSL vs. multi-domain SSL

A multi-domain SSL, also known as a SAN certificate (Subject Alternative Name), is designed to secure multiple domains and subdomains under a single certificate. This type of SSL is particularly useful for businesses with multiple, distinct domains and subdomains, as it simplifies certificate management while providing robust security for all included domains.

Multi-domain SSLs are generally more expensive and can be more complex to administer compared to single-domain SSL certificates. For businesses with a single online entity, a single-domain SSL provides a sufficient level of security without the added cost or complexity of a multi-domain SSL.

Selecting an SSL provider

Choosing the right SSL provider is an essential step when implementing a single domain SSL certificate. With many providers available, it’s important to evaluate key factors such as reputation, support, and features to make an informed decision.

• Reliability and reputation: Select a provider with a proven track record of reliability and positive customer reviews, such as Openprovider. A strong reputation indicates that the provider delivers consistent service and trustworthy SSL certificates.

• Customer support: Look for a provider that offers robust support to help with any issues during installation, configuration, or renewal. Reliable support can save time and prevent potential disruptions.

• Features and pricing: Be sure to compare the features and pricing of different providers before your purchase. Some providers may include extras like malware scanning, a higher warranty, or advanced security features, which can add value and enhance protection. Check renewal fees as well - sometimes, providers offer the first months of registration for an SSL at a deceivingly low price, only to hit you with an unexpectedly high renewal fee after! At Openprovider, thanks to our transparent pricing structure, you always know what you are paying. 

Buying and installing a single-domain SSL certificate

Follow the steps below to purchase and install your single-domain SSL certificate.

1. Log in to the control panel (or create an account first) to buy your SSL and select a single-domain certificate. 

2. Select for how many years you want to register your certificate and whether you want to enable automated renewal (strongly recommended!).

3. Double-check that all information you entered is correct, especially in case of ordering an OV or EV certificate, as they are subject to stricter validation.\

4. Generate a CSR (Certificate Signing Request (CSR) for your certificate through the control panel. The CSR will be used to request your SSL certificate from our vendor, Sectigo.

5. Submit the order and wait for the validation process to be completed. For DV certificates, this usually takes just a few minutes - for OV and EV certificates, the validation process will take up to a few days.

6. Once validated, use the CSR to start the installation process of your single-domain certificate to your web server. The installation process may vary depending on the type of server you’re using, so be sure to follow the specific instructions for your setup.

7. Update your website’s configuration to ensure all URLs use "https" instead of "http." This step ensures secure connections for all visitors to your site.

8. Use online SSL testing tools to verify that your SSL certificate is installed correctly and your domain is fully secure.

Troubleshooting common SSL issues

Even after successfully installing a single-domain SSL certificate, you might encounter common issues that need troubleshooting. One frequent problem is the "mixed content" warning, which occurs when your site loads both "https" and "http" resources. To resolve this, update all internal links and resources to use "https."

Another issue could be an expired SSL certificate, which can be avoided by setting reminders for renewal before the certificate authority expiration date.

Incorrect certificate installation can also lead to browser warnings; ensure that you have correctly installed both the SSL certificate and any intermediate certificates required by your provider. If users experience connection errors, check your server's SSL configuration to ensure it's up to date with the latest security protocols.

Best practices for managing your single-domain SSL certificate

Expiration and renewal

SSL certificates typically remain valid for one to two years, after which they need to be renewed to ensure continued protection. If a certificate expires, your website will immediately display security warnings to visitors, which can undermine trust and discourage users from interacting with your site.

To prevent this, it’s important to set up reminders well before the expiration date and keep track of all your SSL certificates. Many SSL providers, such as Openprovider, offer automated renewal options, making the process more straightforward and helping you stay compliant with security standards. Once your certificate is renewed, be sure to install it on your web server promptly to maintain uninterrupted encryption.

Upgrading your SSL certificate

As your website grows and evolves, upgrading your single-domain SSL certificate to a wildcard or multi-domain certificate might become necessary. For example, if you initially secured only a single domain but later added multiple subdomains, switching can provide broader coverage. 

Upgrading typically involves purchasing a new certificate suited to your expanded needs and installing it on your server, a process that can often be completed with minimal downtime.

Before making the switch, it’s a good idea to consult with your SSL provider. They can guide you through the benefits, costs, and compatibility of different options, helping you choose a certificate that aligns with your website’s current and future requirements. 

Resell SSL certificates with Openprovider

Are you a domain reseller and do you want to buy and resell SSL certificates in bulk? Thanks to our unbeatable combination of affordability, reliability, and exceptional customer support, Openprovider stands out as the premier choice. By choosing an Openprovider Membership Plan, you get access to Sectigo SSL certificates for the best value on the market. The larger your portfolio, the more you save! 

Meanwhile, our user-friendly Reseller Control Panel simplifies the management of multiple certificates, allowing you to efficiently serve your clients and grow your businesses. With Openprovider, resellers gain a trusted partner committed to their success, making it easier than ever to secure and protect their clients' online presence.

Click here to learn more.