Проверка SSL-сертификата
Проверьте информацию о SSL/TLS сертификате сайта.
Домен (FQDN / URL)
- Безопасно
- Результаты нигде не сохраняются и не публикуются.
Примечания
Уровень сертификата
SSL/TLS certificates come in different types, each providing different levels of validation and trust.
| DV certificate | DV (Domain Validation) is the most basic certificate type that verifies control of the domain. Issuance is relatively simple and often uses email validation or DNS record checks. DV certificates are typically low-cost and suitable for small websites or personal blogs. |
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| OV certificate | OV (Organization Validation) performs additional verification of the operating organization, such as confirming legal existence and contact information. OV certificates are commonly used by companies and e-commerce sites to signal that the site is operated by a verified organization. |
| EV certificate | EV (Extended Validation) provides the highest level of validation and requires stricter review of the website operator. It may include submitting legal documents, verifying legal existence, and verifying domain ownership. It is used by organizations where security is particularly important, such as banks, financial institutions, and government entities. |
Срок действия
The validity period of an SSL/TLS certificate is the time between the issuance date and the expiration date.
Within this period, the certificate is trusted and enables secure communication.
| Issued on | The date the SSL/TLS certificate was issued. This is when the certificate becomes effective. |
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| Expires on | The date the certificate expires. After this date, the certificate is no longer trusted. |
Субъект (Subject)
Information about the certificate subject (the entity the certificate is issued to).
| Common Name (CN) | The domain name protected by the certificate. For example, if the certificate is issued for example.com, CN includes "example.com". |
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| Organization (O) | The legal name of the organization associated with the certificate. This helps verify trust and legitimacy. |
| Organizational Unit (OU) | A specific department or section within the organization. If the organization has multiple divisions, OU may include a division name. |
| Country (C) | Two-letter country code indicating the organization's country. Used to help confirm legitimacy. |
| State (ST) | State or region where the organization is located. May be included depending on the issuer. |
| Locality (L) | City or locality where the organization is located. May be included depending on the certificate. |
| Citizenship | Country to which the organization is legally affiliated. Useful for confirming legal association. |
| Jurisdiction | Legal jurisdiction for the organization. Important information indicating which legal system applies. |
| Business category | Industry or business category information. May be included for certain certificate types. |
| Serial number | A number used to uniquely identify the certificate. Helps ensure uniqueness and prevent forgery. |
Издатель (Issuer)
Information about the certificate issuer (CA).
| Common Name (CN) | Name of the certificate authority (CA) that issued the certificate. Certificates issued by trusted CAs are generally considered trustworthy. |
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| Organization (O) | Organization name of the issuer. Used when evaluating trustworthiness and legitimacy. |
| Organizational Unit (OU) | A specific department or section within the issuer. May include a division name if the issuer has multiple divisions. |
| Country (C) | Two-letter country code indicating the issuer's country. This can determine the legal framework for issuance. |
SAN (Subject Alternative Names)
Subject Alternative Name (SAN) is used when a certificate applies to multiple domains.
SAN can include domain names and DNS names, allowing one certificate to protect multiple websites.
This can reduce cost and simplify management.
| DNS name | A list of domain names that the certificate applies to. For example, if the certificate applies to example.com and example.org, both appear in SAN. |
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Отпечатки (Fingerprints)
Fingerprints uniquely identify the certificate contents.
They can be used to verify certificate authenticity.
| SHA-1 | SHA-1 is an older hash algorithm and is not recommended due to known security risks. It was widely used in the past, but modern security standards prefer stronger algorithms. |
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| SHA-256 | SHA-256 is a stronger hash algorithm used to improve certificate security. It helps uniquely identify a certificate and verify its validity. |