A single domain SSL certificate is a standard certificate issued for one domain name or one subdomain name. Some certificates cover both the WWW and non-WWW versions of your domain
Some single domain certificates only cover the name you add to the CSR (certificate signing request).
The certificate type needed is determined by the business or individual's needs.
PositiveSSL is one of the most popular and inexpensive SSL certificates in the industry. This hassle-free certificate is the ideal choice for websites where the brand's trust is already established and organization verification is not needed. It's ideal for securing low-volume e-commerce websites. Domain Validation, $10,000 Warranty, 15-Day Refund, No Paperwork.
EssentialSSL is an inexpensive domain validation certificate suitable for small and medium-sized businesses. The certificate is usually issued in minutes and involves no paperwork. With an EssentialSSL certificate, you get unlimited reissues, mobile browser support and a FREE Comodo Site Seal. Domain Validation, $10,000 Warranty, 15-Day Refund, No Paperwork.
InstantSSL is an affordable professional-level certificate. It verifies the company behind the website as well as domain name and carries a $50,000 warranty. This full business-validated certificate provides improved credibility and consumer trust. Each InstantSSL Certificate comes with a FREE Corner of TrustLogo. Organization Validation, $50,000 Warranty, 15-Day Refund, Unlimited Server Licenses.
InstantSSL Pro is great news for e-commerce websites. With InstantSSL Pro, Comodo not only validates domain name, it also verifies the company behind the online business. This value-priced, business-validated certificate carries a $100,000 warranty. InstantSSL Pro comes with a FREE Corner of TrustLogo. Organization Validation, $100,000 Warranty, 15-Day Refund, Unlimited Server Licenses.
The PremiumSSL certificate is designed for securing e-commerce websites carrying out high-volume and high-value transactions. It's a full business-validated certificate – Comodo not only validates the domain name, it also authenticates the company behind the online business. Provides a $250,000 warranty. Organization Validation, $250,000 Warranty, 15-Day Refund, Unlimited Server Licenses.
No SSL provider in the world comes close when it comes to offering Comodo SSL certificates at competitive pricing - backed up by world-class support and infrastructure.