CertOneDV, OV, and EV certificates differ in how identities are validated. This comparison explains their procedures, identity assurance, pricing, and use cases to help you choose.
1. Validation levels
SSL/TLS certificates are commonly grouped into three validation levels:
Domain Validation (DV): validates domain control through a fast, straightforward process.
Organization Validation (OV): validates domain control and organization details.
Extended Validation (EV): applies a more extensive process to verify an organization's legal existence and identity.
With equivalent keys and TLS settings, all three provide the same encryption strength. Their differences concern identity checks and the information included in the certificate.
2. DV certificates
1. Validation process
DV validation is straightforward:
Step 1: Submit a request
- Supply domains and contact details to the certificate provider
- Generate a Certificate Signing Request (CSR)
Step 2: Validate domain control
- DNS: add the specified TXT record
- HTTP: place the specified challenge file under the website root
- Email: where supported, receive validation mail at an approved administrative address
Step 3: Issue the certificate
- After validation, issuance usually takes minutes to hours
- The certificate identifies domains, without verified organization details
2. Features
Advantages:
- ✅ Quick issuance, often within minutes to hours
- ✅ Low cost; many CAs offer free DV certificates
- ✅ Simple validation without organization documents
- ✅ Suitable for personal websites, blogs, and small projects
Limitations:
- ❌ Does not identify the organization behind the domain
- ❌ Domain validation alone does not establish that a website is legitimate
- ❌ Does not meet requirements for verified organization identity
3. Use cases
- Personal websites and blogs
- Small business websites
- Development and test environments
- Internal tools and systems
- Projects with limited budgets
4. Certificate details example
A DV certificate viewer typically shows:
- Validation type: domain validation
- Issued to: example.com
- Issuer: Let's Encrypt or another CA
- No verified organization name
3. OV certificates
1. Validation process
OV adds organization checks to domain validation:
Step 1: Submit a request
- Submit domain and organization details
- Provide registration documents, such as a business license
- Generate a CSR
Step 2: Validate domain control
- Validate domain control using an accepted DNS, HTTP, or email method
Step 3: Validate the organization
- The CA verifies legal existence
- It checks registration details
- It may contact the organization by phone or email
- Validation typically takes 1–3 business days in this comparison
Step 4: Issue the certificate
- Issue after successful validation
- Include organization and domain information
2. Features
Advantages:
- ✅ Verified organization details in the certificate
- ✅ More extensive identity checks
- ✅ Suitable for business websites and applications
- ✅ Usually less expensive than EV
Limitations:
- ❌ Longer validation, often 1–3 business days
- ❌ Organization documents required
- ❌ Higher cost than DV
- ❌ No special green organization label in the address bar
3. Use cases
- Corporate websites
- Small and medium-sized online stores
- SaaS applications
- API services
- Websites requiring verified organization identity
4. Certificate details example
An OV certificate viewer typically shows:
- Validation type: organization validation
- Issued to: Example Company Inc. / example.com
- Issuer: DigiCert or another CA
- Organization and domain names
4. EV certificates
1. Validation process
EV applies the most extensive identity validation of these three categories:
Step 1: Submit a request
- Submit detailed organization information
- Provide the required organization documents
- Identify an organizational contact and contact details
Step 2: Validate domain control
- Validate domain control using an accepted DNS, HTTP, or email method
Step 3: Extended validation
- The CA conducts additional identity checks
- Verify legal registration status
- Verify the physical address
- Verify the authorized contact
- Perform applicable restricted-entity checks
- Validation typically takes 3–7 business days in this comparison
Step 4: Issue the certificate
- Issue after all checks succeed
- Include the verified organization details
- Older browsers displayed a green organization label; this is not a modern browser guarantee
2. Features
Advantages:
- ✅ Extensive identity validation
- ✅ Verified organization details; historical green address-bar indicators are no longer generally used
- ✅ Suitable for strong organization-identity requirements
- ✅ Additional identity assurance, though not a guarantee against phishing
Limitations:
- ❌ Longer validation, often 3–7 business days
- ❌ Usually the highest cost
- ❌ More organization documentation
- ❌ Eligibility is limited to qualifying legal entities
3. Use cases
- Financial institutions, banks, and payment platforms
- Large online stores
- Government websites
- Healthcare platforms
- Businesses with extensive identity-assurance requirements
4. Certificate details example
An EV certificate viewer typically shows:
- Validation type: extended validation
- Issued to: Example Company Inc. [US] / example.com
- Issuer: DigiCert Inc [US]
- Verified organization details; the green address-bar label is historical browser behavior
5. Comparing the three types
1. Validation
| Feature | DV | OV | EV |
|---|---|---|---|
| Domain validation | ✅ Required | ✅ Required | ✅ Required |
| Organization validation | ❌ | ✅ Required | ✅ Required |
| Organization checks | ❌ | Basic organizational checks | Extended checks |
| Typical issuance time | Minutes to hours | 1–3 business days | 3–7 business days |
| Documents | None for organization identity | Organization records | Extended organization records |
2. Security and identity
| Feature | DV | OV | EV |
|---|---|---|---|
| Encryption strength | Equivalent | Equivalent | Equivalent |
| Identity validation | Domain control | Organization identity | Extended organization identity |
| Phishing prevention | Not guaranteed | Not guaranteed | Not guaranteed |
| Verified organization details | None | Included | Included with extended checks |
| Browser indicator | Standard HTTPS indicator | Standard HTTPS indicator | Standard HTTPS indicator; green label is historical |
3. Historical price comparison
| Type | Indicative original price | Notes |
|---|---|---|
| DV | Free–RMB 500/year | Many CAs offer free DV |
| OV | RMB 1,000–5,000/year | Varies by provider |
| EV | RMB 3,000–15,000/year | Varies by provider |
4. Use cases
| Use case | Certificate option |
|---|---|
| Personal blog | DV |
| Small business | DV or OV |
| Medium-sized business | OV |
| Large business | OV or EV |
| E-commerce | OV or EV where organization validation is needed |
| Financial institution | EV where required by identity policy |
| Development and testing | Free DV |
6. Choosing a validation level
1. Website type
Personal website or blog:
- Option: free DV
- Reason: low cost, fast validation, and encrypted transport
Small business website:
- Options: DV or OV
- Reason: choose based on budget and identity requirements
Medium-sized business website:
- Option: OV
- Reason: verified organization details at a moderate cost
Large business or e-commerce website:
- Options: OV or EV
- Reason: verified organization identity supports brand assurance
Financial institution:
- Option: EV
- Reason: extensive identity checks where required by policy
2. Budget
- Limited budget: DV, including free options
- Moderate budget: OV balances cost and organization validation
- Larger budget: EV for extended identity validation
3. Timing
- Urgent launch: DV can be issued within minutes
- 1–3 days available: consider OV
- About a week available: consider EV
4. Applicant type
- Individuals or unregistered groups: DV is the usual option
- Registered organizations: OV or EV may be available
- Extended identity requirements: consider EV
7. Moving to a higher validation level
You can start with DV and change certificate type as business needs develop:
DV → OV：
- When growth creates a need for verified organization identity
- When the budget permits
- When organization details must appear in the certificate
OV → EV：
- When moving into sensitive services such as payments or finance
- When policy calls for extended identity assurance
- When the budget supports the additional validation
Conclusion
Choose DV, OV, or EV based on your website, budget, timing, and identity requirements.
- DV: quick, free or inexpensive issuance for personal sites and small projects
- OV: organization validation for business websites
- EV: extended identity validation for qualifying organizations
Whichever type you choose, configure it correctly, renew on time, and monitor its status. Validation levels differ in identity assurance, not encryption strength with equivalent TLS settings.