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THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.picabo.cz · 81.31.47.167:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=*.picabo.cz
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Valid from
2025-12-04T00:00:00+00:00
Expires
2026-12-11T23:59:59+00:00
Days remaining
36
Serial (hex)
0F69D005261DC20FE9455E83B9E0BFCD
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.picabo.cz, DNS:picabo.cz

SHA-256 fingerprint

6E:3E:6A:22:77:3D:41:3F:FE:71:65:44:F0:0D:3C:D4:C1:BB:28:F1:2F:47:41:C7:F0:ED:3D:19:A9:3E:2C:87
Certificate extensions & PEM
authorityKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
2C:A4:38:7E:85:7B:89:6B:96:1D:09:CF:70:CA:E6:35:7F:B5:04:42
subjectAltName
DNS:*.picabo.cz, DNS:picabo.cz
certificatePolicies
Policy: 2.23.140.1.2.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.rapidssl.com CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Dec 4 09:23:12.723 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:9F:C7:E1:02:AA:AC:09:DE:5F:38:16: 9E:85:BF:BF:C6:09:93:AF:51:75:8B:44:0F:91:C6:2A: 4C:57:CF:71:4F:02:21:00:9B:14:33:AA:5B:3E:16:76: 28:81:DF:CF:4E:25:B9:ED:F5:C3:4F:30:54:BC:B1:A9: CA:E2:CA:95:80:9F:1E:37 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Dec 4 09:23:12.690 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:35:E5:00:87:7E:6C:E6:70:06:F8:DF:CB: 18:A4:15:52:47:CE:94:FF:B8:5C:AF:5F:14:A0:46:58: 71:93:43:71:02:21:00:D1:16:DF:D1:B0:73:0D:FE:A8: B9:C9:76:B7:B4:AF:70:09:94:01:B0:95:2D:03:1D:C7: EE:DC:0B:72:E0:70:79 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : Dec 4 09:23:12.706 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E3:C2:47:E2:68:01:80:46:78:A3:7D: EE:BA:F8:2C:9F:DE:17:33:7B:25:38:3F:70:91:56:64: EB:C3:F2:CD:0A:02:21:00:A1:1C:DB:F1:2A:5B:79:CD: 8B:6A:B6:B8:0C:ED:80:54:42:3C:04:23:34:0E:F8:14: 0D:7E:E3:23:F2:0F:72:6E
-----BEGIN CERTIFICATE-----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jj+hRRUqZhYtAKATtDeKF4/k+3Z9ByVEP2A7tvM3kMNDh6+jHE4HyVyjkaRVE4LE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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-11-05T19:21:52+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:33+00:00
Expires
2027-11-02T12:24:33+00:00
Days remaining
361
Serial (hex)
0B259422CED9812A15A04E99528A0EFA
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

44:22:E9:63:EE:53:CD:58:CC:9F:85:CD:40:BF:5F:FE:C0:09:5F:DF:1A:15:45:35:66:1C:1C:06:BC:AD:C6:9B
Certificate extensions & PEM
subjectKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: 2.16.840.1.114412.1.1 CPS: https://www.digicert.com/CPS Policy: 2.16.840.1.114412.1.2 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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