DV vs OV vs EV: Choosing the Right SSL Certificate Type

Certificate Authorities issue three main tiers of SSL/TLS certificate. Each involves a different level of identity verification and is suited to different use cases. Here's how to choose.

Domain Validation (DV)

A DV certificate is the baseline. The CA only checks that you control the domain — typically via an email, DNS record, or HTTP file. Issuance is fully automated and can take seconds. Let's Encrypt, ZeroSSL, and Google Trust Services issue DV certificates only.

Best for: personal sites, blogs, internal tools, any context where encrypting traffic is the goal but brand identity isn't at stake.

Organization Validation (OV)

An OV certificate adds a layer of business vetting. The CA verifies that your organization legally exists — checking business registries, phone directories, and sometimes calling you directly. The certificate embeds your organization name in its Subject field.

Best for: business websites where customers might examine the certificate details, e-commerce sites, and any context where demonstrating a verified organization matters.

Extended Validation (EV)

An EV certificate requires the most thorough vetting, including legal existence, physical address, operational status, and identity of the certificate requester. EV certificates include a specific Certificate Policy OID (2.23.140.1.1) that browsers and tools can detect.

Best for: financial institutions, healthcare providers, and high-security applications where maximum trust signal is warranted.

What About Wildcard and Multi-Domain?

These aren't separate tiers — they describe what domains a certificate covers. A wildcard certificate uses a * in the SAN to cover all subdomains of a domain. A multi-domain (SAN) certificate lists multiple distinct domains explicitly. Both can be issued as DV, OV, or EV.

How to Check What Type a Certificate Is

Paste any certificate into the SSL Certificate Decoder. The decoder identifies DV, OV, EV, and Self-Signed certificates automatically and highlights the relevant fields — Certificate Policies OID, Subject Organization, and Basic Constraints.