HubSpot Wildcard SSL Certificate Guide

Using HubSpot to manage your website means you need a clear understanding of how wildcard SSL certificates work so every domain and subdomain stays secure for your visitors.

This guide explains what wildcard SSL certificates are, when they make sense, and how they relate to a HubSpot-hosted website so you can plan the right security setup.

What Is a Wildcard SSL Certificate?

A wildcard SSL certificate is a digital certificate that secures one main domain and many subdomains with a single certificate.

Instead of buying a separate certificate for each subdomain, you can use one wildcard certificate to cover them all, which simplifies management and often reduces cost.

Wildcard SSL Basics

• The certificate uses an asterisk (*) before the domain name.
• The asterisk stands in for any valid subdomain.
• Traffic between a user’s browser and the server is encrypted.
• Visitors see the secure padlock icon in their browser.

Because it is flexible, a wildcard SSL certificate is often chosen by growing organizations that expect to add more subdomains over time.

How a Wildcard SSL Certificate Works

A wildcard SSL certificate is issued for a domain in the format *.example.com. That single certificate can secure multiple subdomains that share the same root domain.

Domains Covered by a Wildcard SSL

For a certificate issued to *.example.com, it will secure:

• blog.example.com
• store.example.com
• support.example.com
• Any other single-level subdomain such as info.example.com

It will not secure:

• The root domain example.com unless the provider explicitly includes it.
• Sub-subdomains such as shop.eu.example.com.

This limitation means that careful planning is essential before you purchase or configure a wildcard SSL certificate.

Benefits of Wildcard SSL for HubSpot Users

Many teams that use HubSpot also manage multiple websites or branded sections under the same primary domain. In those cases, a wildcard SSL certificate can provide several advantages.

Simplified Certificate Management

With a wildcard SSL certificate, you can secure many subdomains with one renewal date and one set of configuration steps, instead of handling a separate certificate for each subdomain.

Scalability for New Subdomains

As you launch new campaigns, microsites, or content experiences, you may add new subdomains. A wildcard SSL certificate often lets you secure those new properties without buying or installing a separate certificate.

Consistent Visitor Trust

When every subdomain is protected with HTTPS, visitors see a secure connection wherever they land. That consistency helps reduce security warnings and builds trust.

Wildcard SSL vs. Single-Domain and Multi-Domain

Choosing the right certificate type depends on how many domains and subdomains you manage and how your infrastructure is set up.

Single-Domain SSL Certificates

A single-domain certificate secures only one domain or subdomain, such as www.example.com. If you only have a single site and no additional subdomains, this option may be sufficient.

Wildcard SSL Certificates

A wildcard SSL certificate is ideal when you have many subdomains under the same root domain and you want flexible coverage without managing a long list of individual certificates.

Multi-Domain (SAN) Certificates

Multi-domain or SAN (Subject Alternative Name) certificates secure multiple different domains or subdomains in one certificate. This can be helpful when you operate several brands or country sites under different domain names.

HubSpot and SSL Certificate Management

When you host website content on HubSpot, the platform provides built-in SSL for connected domains. This simplifies security for marketers and website managers who do not want to manage certificates manually.

How SSL Works on HubSpot

• Domains you connect to your portal are provisioned with SSL through the platform.
• The provisioning process handles the technical details of the certificate lifecycle.
• Most users do not need to purchase a separate wildcard SSL certificate for pages hosted directly on HubSpot.

Because the platform manages SSL at the infrastructure level, you avoid tasks like purchasing, installing, and renewing certificates for each connected subdomain that is fully hosted on the platform.

When to Consider a Wildcard SSL with HubSpot

There are scenarios where you may still need a certificate outside the platform, even if your primary marketing content is managed on HubSpot.

• You run applications or services hosted on other servers using the same domain.
• You operate legacy subdomains not fully migrated to the platform.
• You have compliance requirements that call for a specific certificate type or provider.

In these cases, you may use a wildcard SSL certificate for systems you host directly, while HubSpot manages SSL for hosted content that lives inside the platform.

Key Considerations Before Buying a Wildcard SSL

Before you purchase a wildcard certificate, review your architecture and security requirements carefully.

Plan Your Domain Structure

1. List every domain and subdomain you manage.
2. Identify which ones are hosted on HubSpot and which are hosted elsewhere.
3. Decide whether you will add more subdomains in the near future.

This planning step helps you decide whether a wildcard SSL certificate, single-domain certificates, or a multi-domain option best fits your needs.

Understand Provider Limitations

Different certificate authorities may apply different rules regarding:

• Whether the root domain is included with the wildcard.
• How many subdomains are supported.
• What validation methods are allowed.

Review these details carefully so your certificate works as expected with your domains and any services that connect to HubSpot.

Using Wildcard SSL with Other Platforms and HubSpot

If you run a mixed environment, where some content is hosted on HubSpot and some on other platforms, coordination is important.

Align DNS and SSL Strategy

To keep your setup clear and secure:

• Centralize DNS management where possible.
• Document which subdomains are covered by the wildcard SSL certificate.
• Document which subdomains rely on SSL managed by HubSpot.
• Avoid overlapping or conflicting certificate configurations.

This documentation helps your development, marketing, and security teams stay aligned as you add or retire subdomains.

Monitor Security and Renewals

Even if HubSpot handles SSL for hosted content, you must still keep track of certificates that you own directly.

• Set calendar reminders for wildcard SSL renewal dates.
• Use monitoring tools to check certificate expiration and configuration.
• Regularly review subdomains to confirm that everything is covered by HTTPS.

Learn More About Wildcard SSL and HubSpot

To dive deeper into the technical details of wildcard SSL certificates, you can review the original resource that inspired this guide on the HubSpot blog at this external page about wildcard SSL certificates.

If you are planning a broader website or SEO strategy that includes HubSpot along with other tools, you can also explore consulting resources such as Consultevo for help with implementation planning and optimization.

Conclusion: Choosing the Right SSL Strategy with HubSpot

A wildcard SSL certificate can be a powerful way to secure multiple subdomains under a single domain, reduce administrative overhead, and maintain a consistent security experience for your visitors.

When you host content on HubSpot, much of the SSL work is handled for you, but you may still use wildcard SSL certificates for systems that live outside the platform. By understanding how these certificates work and how they fit into your environment, you can build a secure, scalable foundation for every domain and subdomain you manage.

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