SSL Certificate Types: DV, OV, EV and Wildcard Compared

Every website that handles information over HTTPS needs a properly configured TLS certificate. However, choosing a certificate can be confusing because providers offer different validation levels, coverage options and prices.

Do you need a free Domain Validation (DV) certificate? Is Organisation Validation (OV) worth paying for? Does an Extended Validation (EV) certificate make a website more secure? And when should you choose a wildcard certificate?

The answer depends on what you need to prove, which hostnames you need to protect and whether a customer, regulator or procurement policy requires a particular certificate.

This guide compares DV, OV, EV and wildcard SSL certificates, explains their differences and helps you choose the right option without paying for features your website does not need.

1. What Is an SSL/TLS Certificate?

An SSL certificate is the common name for a digital certificate used to establish secure HTTPS connections. Modern websites use Transport Layer Security (TLS), the successor to SSL.

A correctly configured TLS certificate helps a browser verify that it is connecting to the server associated with the requested hostname. TLS also encrypts data transmitted between the browser and the server and protects its integrity in transit.

Certificates differ mainly in two ways:

• Validation level: What the certificate authority checks before issuing the certificate.

• Hostname coverage: Which domain names and subdomains the certificate protects.

DV, OV and EV describe validation levels. Wildcard describes a type of hostname coverage. A wildcard certificate can therefore also be a DV, OV or EV certificate, subject to the certificate authority's issuance rules.

2. DV vs OV vs EV vs Wildcard: Quick Comparison

Important: A wildcard certificate is not a fourth validation level. It describes how many hostnames a certificate can cover.

3. Domain Validation (DV) SSL Certificates

A Domain Validation certificate verifies that the applicant controls the domain name for which the certificate is requested. Certificate authorities commonly perform this check through DNS records, HTTP challenges or other approved validation methods.

DV certificates are widely used because they can be issued quickly and, in many cases, automated.

Advantages of DV certificates

• They can be free through services such as Let's Encrypt.

• They provide the same fundamental TLS encryption capabilities as other validation levels when configured correctly.

• They are suitable for blogs, portfolios, company websites and many online stores.

• Automated issuance and renewal can reduce manual administration.

• They are a practical choice for developers, startups and small businesses.

What DV does not prove

A DV certificate does not, by itself, establish that the applicant is a registered company or verify its legal identity for visitors.

However, that does not make the connection less encrypted. A correctly issued and configured DV certificate can protect data in transit just as an OV or EV certificate can.

When should you choose DV?

Choose DV when your main requirements are HTTPS, encrypted connections and verification that you control the domain.

For most ordinary websites, DV is the sensible starting point. Paying for OV or EV does not automatically make a website's encryption stronger.

4. Organisation Validation (OV) SSL Certificates

An Organisation Validation certificate verifies domain control and checks the identity of the organisation associated with the certificate.

The certificate authority may examine organisational records, contact details and other evidence according to its validation procedures.

Advantages of OV certificates

• They provide verified organisation identity information in the certificate.

• They can support business-to-business verification requirements.

• They may satisfy procurement or compliance policies that specifically require organisational validation.

• They can be useful when counterparties inspect certificate details as part of their due diligence.

Limitations of OV certificates

OV does not automatically provide stronger encryption than DV. It also does not guarantee that a website is trustworthy, that its business practices are safe or that it will protect customer information beyond the security provided by the connection.

Browsers generally do not display OV identity details as a prominent badge beside the address bar. Visitors may need to inspect certificate information to see the verified organisation.

When should you choose OV?

Consider OV when a business customer, partner, procurement team or other relevant authority explicitly requires a certificate with verified organisational identity.

If no such requirement exists, DV may provide all the TLS protection your website needs.

5. Extended Validation (EV) SSL Certificates

Extended Validation certificates apply a more extensive identity-verification process than DV and OV. The certificate authority follows additional requirements to establish the organisation's identity and eligibility.

EV has historically been associated with prominent browser indicators, including a green company name in some browsers. Modern browsers have largely removed these distinctive address-bar indicators, so EV no longer offers the same visible differentiation it once did.

Advantages of EV certificates

• They provide enhanced verification of the organisation named in the certificate.

• They may meet specific enterprise, contractual or financial-sector requirements.

• They can provide documentary evidence of organisational validation when that evidence is required.

Limitations of EV certificates

• They do not automatically provide stronger TLS encryption than DV or OV.

• Their additional validation requirements can increase cost and issuance time.

• Their organisational identity information is less prominent in modern browser interfaces than it was historically.

• They do not independently guarantee that a website is legitimate or free from fraud.

When should you choose EV?

Choose EV when a contract, procurement requirement or applicable policy specifically calls for it.

For a typical business website, blog or online store, EV is rarely necessary solely to improve HTTPS security.

6. Wildcard SSL Certificates

A wildcard certificate is designed to protect a domain and its first-level subdomains under a wildcard name.

For example, a certificate for *.example.com can generally cover:

• shop.example.com

• mail.example.com

• staging.example.com

• app.example.com

A wildcard for *.example.com does not automatically cover the root domain example.com or deeper names such as api.staging.example.com. These may require additional coverage on the certificate.

Advantages of wildcard certificates

• One certificate can cover many first-level subdomains.

• Certificate administration can be simpler when several subdomains share a common setup.

• Fewer separate certificates may need to be tracked and renewed.

• They can be useful for development environments, applications and businesses with multiple subdomains.

Limitations of wildcard certificates

• A wildcard does not automatically cover every hostname or every level of subdomain.

• It does not remove the need to configure HTTPS correctly on each server or service.

• Sharing a wildcard certificate's private key across many systems can increase the impact of a compromise.

• Wildcard issuance often requires DNS-based domain validation, depending on the certificate authority and issuance method.

A wildcard is not inherently more secure than a standard certificate. Its primary benefit is broader hostname coverage and simpler certificate management.

When should you choose a wildcard?

Consider a wildcard when you operate several first-level subdomains and want to simplify certificate administration.

For a website with only example.com and www.example.com, a standard certificate covering both names is often sufficient.

7. Which SSL Certificate Does Your Website Need?

Use your website's actual requirements rather than the certificate's price as the starting point.

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**Blog, portfolio or company website**

  <badge color="success">Usually DV</badge>

  A standard DV certificate is generally sufficient for HTTPS and encrypted connections.
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**Online shop or booking website**

  <badge color="success">Usually DV</badge>

  Use a valid certificate, secure payment integrations and appropriate application security. OV or EV is only necessary if a specific requirement calls for it.
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**Organisation requiring verified identity**

  <badge>Consider OV or EV</badge>

  Check the exact certificate requirements in the contract, procurement policy or applicable regulation.
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**Application with several subdomains**

  <badge>Consider wildcard</badge>

  A wildcard can simplify coverage for multiple first-level subdomains, provided its hostname coverage matches your setup.
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8. Free SSL vs Paid SSL: What Are You Paying For?

A free certificate is not automatically inferior to a paid one. The important question is what the certificate provides and what operational support comes with it.

Let's Encrypt issues free DV certificates and supports automated issuance and renewal. Whether renewal is automatic on your website depends on the hosting environment and its configuration.

A paid certificate may be worthwhile when you need organisational validation, particular certificate-management services, vendor support or a specific contractual requirement. Paying for a certificate does not, by itself, guarantee automatic renewal or better protection against website attacks.

9. SSL Certificate Best Practices

Whichever certificate you choose, correct configuration and ongoing maintenance matter.

Follow these practices:

1. Use HTTPS throughout the website. Redirect HTTP requests to HTTPS where appropriate and resolve mixed-content issues.

2. Monitor certificate expiry. Confirm that renewal works and alerts are configured.

3. Protect private keys. Restrict access to the systems and people that need them.

4. Check hostname coverage. Ensure the certificate includes every hostname that must use HTTPS.

5. Use supported TLS configurations. Follow current recommendations from your hosting provider or system administrator.

6. Secure the application itself. HTTPS does not replace updates, access controls, backups, firewalls or secure coding.

7. Test after configuration changes. Confirm that browsers no longer show certificate warnings and that important pages work correctly.

For broader hosting considerations, explore SteboHost hosting plans and hosting plan comparisons.

Frequently Asked Questions

Is a free SSL certificate as secure as a paid one?

A properly issued and configured free DV certificate can provide the same fundamental TLS encryption as a paid DV, OV or EV certificate. Paid certificates may offer additional validation or services, but price alone does not determine encryption strength.

Does an EV certificate make my website safer?

EV provides more extensive verification of the organisation's identity. It does not automatically make the website's application, server or encryption more secure than a correctly configured DV certificate.

Does a wildcard certificate cover the main domain?

Not necessarily. A certificate for *.example.com typically covers first-level subdomains but not the bare domain example.com unless that name is also included in the certificate.

Can I use a wildcard certificate for multiple subdomains?

Yes, a wildcard certificate can cover multiple first-level subdomains under the specified domain. Check the certificate's exact hostname coverage before deploying it.

Do I need a paid SSL certificate for an online shop?

Not usually. A valid DV certificate is generally sufficient for HTTPS. Your online shop still needs secure payment processing, appropriate access controls, software updates and protection of customer data.

Will an SSL certificate prevent my website from being hacked?

No. A TLS certificate protects the connection between the browser and server, but it does not prevent every attack against the website, application or hosting account.

Conclusion

Choosing an SSL certificate is straightforward when you separate validation from hostname coverage.

• DV: The practical choice for most websites that need HTTPS.

• OV: Suitable when verified organisational identity is required.

• EV: Appropriate when enhanced validation is specifically required.

• Wildcard: Useful when multiple first-level subdomains need certificate coverage.

Do not pay for a higher validation level simply because it sounds more secure. Start with the actual requirements of your website, organisation and customers.

Explore SteboHost hosting services to review hosting options for your website, and confirm which SSL certificate types and management features are available with your selected plan.