Secure One Domain and One Subdomain
Single Domain SSL Certificates
Single-domain SSL certificates ensure online security by encrypting data between users and web servers. They not only safeguard sensitive information but also enhance website credibility and trust, crucial for boosting customer confidence and conversion rates. This guide explores the importance of SSL certificates, how they protect against cyber threats, and how to choose the right certificate for your business needs. Stay secure online and learn about the varying levels of validation available, including Domain Validation, Organization Validation, and Extended Validation. Protect your website and improve customer loyalty with the right SSL certificate.
To obtain this type of SSL/TLS certificate, an organization must confirm details including legal company name, location, and domain name ownership. There is then a vetting process that must be completed by a human before the certificate is issued. Sectigo, a leading Certificate Authority (CA), offers both single-domain and multi-domain (UCC / SAN) Extended Validation Certificates.

Single Domain EV
Ideal for blogs & sites that don’t gather customer data
Fastest issuance
12/5 Expert Service
Unlimited Server Licenses
2048-bit encryption
30-Day Money Back Guarantee
Compatible with all leading web and mobile browsers
Server Linux
Includes Nisse-SSL Trust Seal

Single Domain EV
Ideal for business sites and login screens
Validates Organization
12/5 Expert Service
Unlimited Server Licenses
2048-bit encryption
30-Day Money Back Guarantee
Compatible with all leading web and mobile browsers
Server Linux
Includes Nisse-SSL Trust Seal

Single Domain EV
Ideal for e-commerce and enterprise websites
Highest Encryption
Free 12/5 Expert Service
Unlimited Server Licenses
2048-bit encryption
30-Day Money Back Guarantee
Compatible with all leading web and mobile browsers
Server Linux
Includes Nisse-SSL Trust Seal

4.5
Validation Requirements
Single domain SSL certificates are vital for ensuring online security by encrypting data between users and web servers. They not only safeguard sensitive information but also enhance website credibility and trust, crucial for boosting customer confidence and conversion rates. This guide explores the importance of SSL certificates, how they protect against cyber threats, and how to choose the right certificate for your business needs. Stay secure online and learn about the varying levels of validation available, including Domain Validation, Organization Validation, and Extended Validation. Protect your website and improve customer loyalty with the right SSL certificate.
Domain Validated SSL certificates are the most basic and easiest to validate using a single step to verify the person or organization who owns the registered domain.
To complete the validation, the domain owner must prove that they own the domain that was submitted with the order.
The easiest and preferred method is completing the verification with email-based authentication. Using this preferred method, we will send an email to the WHOIS registrar email address asking you to verify that you purchased a DV certificate. Once you positively respond to our email, the requirement is considered satisfied and the certificate can be issued within minutes of a completed order.
As an alternative to the WHOIS registered email, we can send the authentication email to one of five pre-approved email addresses associated with the website domain. The five pre-approved addresses are:
- Admin@name-of-site.com
- Administrator@name-of-site.com
- Webmaster@name-of-site.com
- Hostmaster@name-of-site.com
- Postmaster@name-of-site.com
If the email Domain Validation does not work for your particular situation, there are alternative methods.
- File-Based Authentication – we will provide you with a text file that you will need to upload to the root directory of your website. We will then verify your website via HTTP or HTTPS.
- CNAME-Based Authentication – we will provide you with two unique hash values (these are MD5 and SHA1). You, in turn, must enter them in your CNAME DNS record.
Organization Validated or OV SSL certificates require more validation than Domain Validated (DV) certificates and provide more trust. With an OV certificate, we confirm the business associated with the domain name is registered and legitimate by checking details such as the company name, location, address, and incorporation or registration information. This makes the OV certificate a more suitable option for public-facing websites that represent companies or organizations. OV’s are usually used by corporations, governments and other entities that want to provide an extra layer of confidence to their website visitors. OV requirements for an organization include:
- Domain Ownership/Authentication
- Organization Authentication
- Locality Presence
- Telephone Verification (Organization phone number found on an online database)
- Final Verification phone call
For legitimate organizations, this process goes smoothly and quickly. Remember, an OV certificate differentiates legitimate businesses from the pretenders—including scammers and hackers.
An OV SSL certificate for an individual requires the identity and address to be validated on the certificate. Individual identity is verified by the applicant providing one of the following documents:
- Legible copy of a government-issued photo ID such as a valid driver’s license, passport, military ID, or National ID
- Copy of a recent major utility bill (i.e. power bill, water bill, etc.)
- Copy of a bank or credit card statement
The Extended Validation SSL certificate has very strict industry guidelines that our validation specialists make as simple as possible with minimal action required from you. This level of security is recommended for sites that obtain personal information from users, such as eCommerce businesses.
The validation of your organization can be completed using 1 of 3 methods:
- DCV email
- CNAME
- HTTP(S) challenge
Anticipate a telephone call to the main business phone number listed on the subscriber agreement to verify the signature, authority to sign and signer’s title. If any additional actions are required, a validation specialist will reach out to you via email. The telephone call to verify the authenticity of the order and signer listed on subscriber agreement can not be made to a direct phone number or cell phone unless the number can be validated.
Tips When Validating
- Sole proprietorship / sole trader and some partnerships require a principal individual in the organization to be verified.
- All EV certificates must have the legal name. If a tradename/DBA is verified, the certificate will be listed with the tradename and legal name.
- In the case of a sole trader the legal name is the owner/principal name.
- No certificate can be issued to the tradename/DBA name only.
- Use the address where the organization conducts business. Do not use PO Box, Care of, mail stop/forwarding, virtual office or a registered agent address.
- If the Validation Specialist is not able to verify your organization, you will be contacted with options on how to resolve any outstanding issues.
A Wildcard SSL certificate is a powerful tool for website security, allowing the encryption of multiple subdomains under a single domain. For instance, if your primary domain is example.com, a wildcard certificate will cover subdomains like blog.example.com and shop.example.com. This functionality makes it an efficient and cost-effective solution for businesses managing several subdomains.
While Wildcard SSL certificates provide extensive coverage, it’s essential to remember that they primarily serve the purpose of securing specific subdomains. A single domain SSL configuration ensures that precise connections to the main domain are encrypted. Therefore, when you possess a wildcard certificate, it is still crucial to verify that the primary domain is appropriately included in the coverage. This guarantees comprehensive security across your web presence.
There are numerous advantages to opting for wildcard SSL certificates. Firstly, they simplify management by allowing you to use one certificate for numerous subdomains. This can significantly cut costs and save time when it comes to renewal and installation processes. Additionally, wildcard certificates increase your website’s credibility and trustworthiness, as they signal security to users. Ultimately, protecting data exchanged between users and your site is paramount in building customer trust.
A Wildcard SSL Certificate provides robust website security by encrypting multiple subdomains under a single domain, such as blog.example.com and shop.example.com. This cost-effective solution not only simplifies management and reduces costs, but also increases your website’s credibility and user trust. While it effectively covers subdomains, ensuring the primary domain is included is crucial to maintaining comprehensive security. Discover the benefits of using Wildcard SSL Certificates for your business and learn how they can protect user data and enhance your online presence.
Nisse-SSL provides one of the most trusted solutions for acquiring Single Domain SSL Certificates. Their certificates are not just affordable but come with extensive customer support and an easy installation process. By choosing Nisse-SSL, webmasters can ensure that their websites are safeguarded against unauthorized access, protecting sensitive information such as login data and payment details.
To obtain a Single Domain SSL Certificate from Nisse-SSL, the process begins with selecting the right certificate type for your website. The application process is straightforward—simply fill out the requested information on their site and verify your domain ownership. Once validated, your certificate will be issued, ready for installation. Keeping your website secure with a Single Domain SSL Certificate from Nisse-SSL establishes trust with your visitors and enhances your online credibility.

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