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SSL/TLS certificates are digital certificates used to secure communication between web browsers and servers on the World Wide Web. They enable encrypted connections, protecting sensitive data during transmission. These certificates verify the authenticity of websites and establish trust, contributing to web security and search engine rankings.

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calarasi.md

Issuer: CN=YR1, O=Let's Encrypt, C=US

Not Before: 2026-09-09T14:52:16Z

Not After: 2026-12-08T14:52:15Z

Signature Algorithm: sha256, rsa

Public Key: RSA 2048 bits

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Fingerprint F4:11:DF:6E:C0:61:1E:BF:FD:CB:B8:11:76:C9:F6:0A:75:28:29:6B
Issuer CN=YR1, O=Let's Encrypt, C=US
Not After 2026-12-08T14:52:15Z
Not Before 2026-09-09T14:52:16Z
Serial number 6E7BFC97DDFFA7A5A294724D997F7024362
Signature Algorithm sha256, rsa
Subject CN=calarasi.md
Extensions:
authorityInfoAccess CA Issuers - URI:http://yr1.i.lencr.org/
authorityKeyIdentifier keyid:1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
basicConstraints CA:FALSE
certificatePolicies Policy: 2.23.140.1.2.1
crlDistributionPoints Full Name: URI:http://yr1.c.lencr.org/99.crl
ctlSignedCertificateTimestamp BIH5APcAfgBGr4Y9Oz7ln6V33qgkXTaw2e0ioiP0YXdBIpRS7pVQXwAAAaCG3VIYAAgAAAUAKV3MzwQDAEcwRQIhAPjdbCYSe5iPK6MvZ3_Ch2jEdfrstIp5pGHpmKOVxoBRAiAYMB2fG-IjYAE3wvwO17yGSlUDDte9GSVfrq1nezhP4gB1ANdtfRDRp_V3wsfpX9cAv_mCyTNaZeHQswFzF8DIxWl3AAABoIbdYW8AAAQDAEYwRAIgO5lXexPOJ9nkjobNSQSUoIonojXHr9-oqbQTWRWZSysCIHjLrTiS7Vx3VO6T7o6zPSAIhPwM8T9e3jFohPXb5KDP
extendedKeyUsage TLS Web server authentication
keyUsage Digital Signature, Key Encipherment
subjectAltName DNS:calarasi.md, DNS:*.calarasi.md
subjectKeyIdentifier 08:FA:18:A8:13:0F:B3:4D:C9:E1:F6:50:10:1B:E6:55:07:2E:2B:D2

Certificate Chain

Root YR

Issuer: CN=Root YR, O=ISRG, C=US

Not Before: 2025-09-03T00:00:00Z

Not After: 2028-09-02T23:59:59Z

Signature Algorithm: sha256, rsa

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Fingerprint CB:CF:D0:9C:E3:CD:22:D9:9D:94:E5:8F:92:E9:89:8F:BE:E5:1A:5E
Issuer CN=Root YR, O=ISRG, C=US
Not After 2028-09-02T23:59:59Z
Not Before 2025-09-03T00:00:00Z
Serial number A20253F15F2691C05DC1CE13B9BCCA4E
Signature Algorithm sha256, rsa
Subject CN=YR1, O=Let's Encrypt, C=US
Extensions:
authorityInfoAccess CA Issuers - URI:http://yr.i.lencr.org/
authorityKeyIdentifier keyid:DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
basicConstraints CA:TRUE
certificatePolicies Policy: 2.23.140.1.2.1
crlDistributionPoints Full Name: URI:http://yr.c.lencr.org/
extendedKeyUsage TLS Web server authentication
keyUsage Digital Signature, Key Cert Sign, C R L Sign
subjectKeyIdentifier 1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB

ISRG Root X1

Issuer: CN=ISRG Root X1, O=Internet Security Research Group, C=US

Not Before: 2026-05-13T00:00:00Z

Not After: 2032-09-02T23:59:59Z

Signature Algorithm: sha256, rsa

Show details
Fingerprint AB:9D:02:63:24:4D:D0:32:6E:B6:70:15:70:5A:66:7E:79:CF:E9:98
Issuer CN=ISRG Root X1, O=Internet Security Research Group, C=US
Not After 2032-09-02T23:59:59Z
Not Before 2026-05-13T00:00:00Z
Serial number F24B6D17F9D9AD7CB1C9FEA78782699F
Signature Algorithm sha256, rsa
Subject CN=Root YR, O=ISRG, C=US
Extensions:
authorityInfoAccess CA Issuers - URI:http://x1.i.lencr.org/
authorityKeyIdentifier keyid:79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
basicConstraints CA:TRUE
certificatePolicies Policy: 2.23.140.1.2.1
crlDistributionPoints Full Name: URI:http://x1.c.lencr.org/
extendedKeyUsage TLS Web server authentication
keyUsage Key Cert Sign, C R L Sign
subjectKeyIdentifier DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94

ISRG Root X1

Issuer: CN=ISRG Root X1, O=Internet Security Research Group, C=US

Not Before: 2026-05-13T00:00:00Z

Not After: 2032-09-02T23:59:59Z

Signature Algorithm: sha256, rsa

Show details
Fingerprint AB:9D:02:63:24:4D:D0:32:6E:B6:70:15:70:5A:66:7E:79:CF:E9:98
Issuer CN=ISRG Root X1, O=Internet Security Research Group, C=US
Not After 2032-09-02T23:59:59Z
Not Before 2026-05-13T00:00:00Z
Serial number F24B6D17F9D9AD7CB1C9FEA78782699F
Signature Algorithm sha256, rsa
Subject CN=Root YR, O=ISRG, C=US
Extensions:
authorityInfoAccess CA Issuers - URI:http://x1.i.lencr.org/
authorityKeyIdentifier keyid:79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
basicConstraints CA:TRUE
certificatePolicies Policy: 2.23.140.1.2.1
crlDistributionPoints Full Name: URI:http://x1.c.lencr.org/
extendedKeyUsage TLS Web server authentication
keyUsage Key Cert Sign, C R L Sign
subjectKeyIdentifier DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94

This certificate is not valid This certificate and its chain is not valid, it signifies potential security and trust issues. An invalid SSL certificate could mean it has expired, been revoked, or not issued by a trusted Certificate Authority (CA). Additionally, an invalid certificate chain may indicate missing or misconfigured intermediate certificates, making it impossible to establish a secure connection to the website. In such cases, web browsers will typically display warnings to users, cautioning them about potential security risks, and it's advisable to avoid interacting with such websites to protect sensitive data from potential threats.