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SSL Types Thailand Guide

By CloudPicked Review Team•Updated 14 June 2026•5 min read
SSL Types Thailand Guide

Contents

  1. What is SSL Certificate
  2. SSL: DV SSL Domain Validation
  3. SSL: OV SSL Organization Validation
  4. SSL: EV SSL Extended Validation
  5. SSL: Wildcard SSL Certificate
  6. SSL
  7. SSL: Let's Encrypt SSL
  8. SSL Certificate Pricing
  9. Choosing: SSL Certificate

What is SSL Certificate

SSL (Secure Sockets Layer)/TLS is a protocol encrypting data between browser and server, enabling HTTPS instead of HTTP. An SSL Certificate is a file that verifies domain identity and enables HTTPS. Every modern website should have SSL.

SSL: DV SSL Domain Validation

DV SSL only verifies domain ownership — no organization or individual verification. Issued in minutes to hours, cheapest (or free with Let's Encrypt). Sufficient for blogs, general business websites, and most e-commerce.

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SSL: OV SSL Organization Validation

OV SSL verifies both domain ownership and actual organization existence (business verification). In the browser, company information appears in certificate details. Takes 1-3 days to issue, costs more than DV but increases trust.

SSL: EV SSL Extended Validation

EV SSL has the most rigorous verification: domain, organization, and legal process validation. It used to show a green bar and company name in the address bar, but modern browsers removed this. Company name still appears in certificate details.

SSL: Wildcard SSL Certificate

Wildcard SSL covers the root domain and all first-level subdomains. *.example.com covers blog.example.com, shop.example.com, api.example.com — but not sub.subdomain.example.com. Costs more than standard DV but cheaper than buying multiple certificates.

SSL

SAN (Subject Alternative Names) or Multi-domain SSL covers multiple domains in one certificate — e.g., example.com, example.net, shop.example.com, otherdomain.com. More economical than buying separate certificates for each domain.

SSL: Let's Encrypt SSL

Let's Encrypt is a nonprofit CA issuing free DV SSL. Quality hosting providers automatically issue Let's Encrypt SSL with 90-day auto-renewal. The encryption is equally secure to purchased certificates.

SSL Certificate Pricing

Free: Let's Encrypt DV (via hosting or Certbot). $10-50/year: DV SSL from Comodo, Sectigo, GlobalSign. $70-300/year: Wildcard DV SSL. $50-500/year: Multi-domain/SAN SSL. $200-1,500/year: EV SSL.

Choosing: SSL Certificate

Most cases: free Let's Encrypt DV is sufficient. With subdomains: free Let's Encrypt Wildcard. Multiple domains: Multi-domain SSL. Corporate/government sites: OV SSL for added trust. Large financial/healthcare: EV SSL.

Frequently Asked Questions (FAQ)

Is Let's Encrypt secure enough?
Let's Encrypt is as secure as a paid SSL in terms of encryption (AES-256, TLS 1.3). The difference is the level of identity verification (DV only), not the strength of the encryption. For a typical website, Let's Encrypt is 100% sufficient.
Are a host's free SSL and Let's Encrypt the same?
Mostly the same. Most hosts use Let's Encrypt as the free SSL given to customers. Some hosts may use another CA, such as ZeroSSL, but the level is still DV the same. If a host says "Free SSL", it usually means Let's Encrypt.
What do I do if the green padlock in the browser disappears?
The "green padlock" is normally just a plain lock icon now. Modern browsers have removed the green bar entirely. If the browser shows "Not Secure", it means SSL isn't enabled or the certificate has expired. Check that the SSL still works and that the HTTP → HTTPS redirect is complete.
Does Wildcard SSL cover sub-subdomains?
No. *.example.com only covers blog.example.com, shop.example.com, but not staging.blog.example.com (a sub-subdomain). If you want to cover staging.blog.example.com, you must buy *.blog.example.com separately, or use a Multi-domain SSL specifying each SAN individually.