SSL
Certificates
Secure Every Site, Every Time.
From single domain to wildcard and multi-domain options, we offer SSL certificates to fit any project. Issued by trusted certificate authorities like Sectigo, RapidSSL, and GeoTrust, every certificate uses 2048-bit keys and up to 256-bit encryption. It's easy to secure your site with industry-leading protection.
Protect Every Click with Trusted SSL
Choose from Single Domain, Multi‑Domain, or Wildcard certificates, backed by 2048-bit keys, 256-bit encryption, and top certificate authorities.
Comodo PositiveSSL
Domain Validation (DV)
Single Domain
Single Domain Certificate
256 bit Encryption
99.3% Browser Compatible
Warranty $10,000
As low as $30/year
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GeoTrust QuickSSL Premium
Domain Validation (DV)
Single Domain
256 bit Encryption
2048 bit root
Warranty $500,000
GeoTrust True Site Seal
99% Browser Compatible
Covers root domain.
As low as $100/year
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Comodo PositiveSSL Wildcard
Domain Validation (DV)
Wildcard Domain
Protects Single Domain
256 bit Encryption
99.3% Browser Compatible
Warranty $10,000
As low as $120/year
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RapidSSL Wildcard
Domain Validation (DV)
Wildcard Domain
Wildcard SSL Certificate
256 bit Encryption
Warranty $10,000
99% Browser Compatible
As low as $150/year
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Comodo PositiveSSL Multi-Domain
Domain Validation (DV)
Multi-Domain
Protects Multiple Domains
Encryption Strength Up to 2048-bit
99.9% Browser Compatible
Warranty $10,000
As low as $75/year
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Comodo InstantSSL Premium
Organization Validation (OV)
Single Domain
Single Domain Organization Validation
Highest strength 2048-bit signatures with 256 bit
99.3% Browser Compatible
Warranty $250,000
As low as $100/year
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Comodo InstantSSL Premium Wildcard
Organization Validation (OV)
Wildcard
Single Domain & Subdomains Organization Validation
256 bit encryption
99.3% Browser Compatible
Warranty $250,000
As low as $200/year
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GeoTrust True BusinessID EV
Extended Validation (EV)
Single Domain
Highest validation level
256 bit Encryption
Warranty $1,500,000
As low as $289/year
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GeoTrust True BusinessID EV Multi
Extended Validation (EV)
Multi-Domain
Highest validation level
256 bit Encryption
MultipleDomains
Warranty $1,500,000.
As low as $499/year
Order NowKey Features at a Glance
Flexibility
You can choose from a wide range of certificates to fit your needs. From the needs of a single domain certificate to a wildcard certificate covering your entire subdomain structure.
Verified Site Identity
EV and OV certificates validate your business name and legal entity, helping visitors trust your site before entering sensitive information or payment details.
Compliance
Maintain PCI and browser compliance with SSL certificates that support encryption standards for secure logins, transactions, and data transmissions.
Guarantee
All Certificates come with a limited 7 day money back guarantee should anything be found wrong with the certificate.
Compatibility
SSL certificates are trusted by 99.9% of modern browsers, mobile devices, and platforms, ensuring reliable encryption across user environments.
Support Included
KnownHost support team assists with installation, renewal, and configuration. We'll guide you through the full certificate lifecycle at no extra cost.
Why Buy an SSL Certificate?
When you buy SSL certificate protection from KnownHost, you get more than encryption. You get trust, compliance, and support.
Secure Your Site
SSL certificates encrypt the connection between your website and your visitors, protecting sensitive data like logins, forms, and payments. This helps prevent man-in-the-middle attacks, data leaks, and other malicious activities.
Build Customer Trust
Visitors are more likely to trust a site with the padlock icon and HTTPS prefix. SSL signals that your site takes security seriously. Essential for ecommerce, login portals, or any site handling personal information.
Boost Your SEO
Search engines like Google favor secure sites. Enabling HTTPS by installing an SSL certificate can give your site an edge in rankings, increase click-through rates, and ensure your site is flagged as “safe” in modern browsers.
Need More Information About
SSL Certificates?
Yes, sometimes it's easier to implement multiple certificates instead of one master certificate designed to fit all occasions. Typically this includes cases of sites that serve up their content without a www. prefix, or those with multiple domains and subdomains requiring SSL coverage.
A certificate authority (CA) is a trusted organization that verifies your identity and issues your SSL certificate. Browsers and operating systems include a built-in list of trusted CAs, which is why certificates from authorities such as Sectigo and DigiCert (which issues RapidSSL and GeoTrust certificates) are recognized automatically without security warnings.
An SSL certificate contains your site's public key and is signed by a certificate authority. When a visitor connects, their browser checks the certificate, then uses the public key to securely set up an encrypted session with your server, which holds the matching private key. Your private key never leaves your server, which is why keeping private keys secure is so important.
TLS (Transport Layer Security) is the modern successor to SSL. Every certificate we offer works with current TLS versions, but the industry still commonly calls them SSL certificates, which is why you'll often see the term SSL/TLS certificates.
PositiveSSL certificates are inexpensive Domain Validation SSL certificates that are issued quickly (mostly because they can be validated automatically) and include a $10,000 Sectigo warranty. InstantSSL certificates use Organization Validation, take longer to be issued, cost more, and include a $[VERIFY] Sectigo warranty.
Regular SSL certificates protect a single domain, period. Wildcard certificates protect a domain and all the subdomains associated with that domain. Keep in mind that wildcard certificates are not available with Extended Validation.
If an SSL certificate expires, browsers will show security warnings and block users from accessing your site. This can lead to lost traffic, broken trust, and even SEO penalties. It’s important to renew your SSL before it lapses to keep your site secure and accessible.
Modern SSL implementations are designed to be fast and efficient. In most cases, users won’t notice any difference in site speed. In fact, HTTPS enables the use of HTTP/2, which can improve load times for well-optimized websites.
Yes, a Multi-Domain SSL certificate (also called SAN certificate) allows you to secure several domains or subdomains under a single certificate. This makes it easier to manage and is ideal for businesses with multiple web properties.
Free SSL certificates like Let’s Encrypt offer basic encryption, but they lack warranties and advanced validation. For ecommerce or professional websites, paid certificates provide stronger trust signals, validation levels, and support — all critical for brand credibility.
SSL certificates come in three main validation types: Domain Validation (DV), Organization Validation (OV), and Extended Validation (EV).
Domain validation certificates only verify that you control the domain, so they're issued in minutes and are a cost-effective choice for blogs and small sites. OV adds verification of your business identity. An EV SSL certificate requires the most thorough checks of your legal entity, and your verified company name is included in the certificate details for visitors who inspect it.
Up to 250 domains, IP's or SAN's can be covered by a single multi-domain SSL certificate. They aren't cheap, but they do give umbrella coverage to an organization which has many domains and would otherwise need multiple single-domain certificates.
Premium certificates offer benefits free certificates don't: organization or extended validation that verifies your business identity, warranties of up to $1,500,000, and trusted site seals. For ecommerce stores and businesses handling sensitive data, those extra trust signals can make a real difference.
20+ Years of Trusted Hosting
KnownHost has been delivering consistently praised hosting solutions for over 20 years. Backed by glowing customer reviews and a reputation for unmatched support, we’re the trusted choice for businesses that demand reliability.