DNS
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

TLSv1.2

zavolga.net · 91.203.124.4:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=*.zavolga.net
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R46 AlphaSSL CA 2025
Valid from
2026-10-11T14:12:59+00:00
Expires
2027-04-28T14:12:59+00:00
Days remaining
190
Serial (hex)
68EDBE3F5777F52FEA820D67
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.zavolga.net, DNS:zavolga.net

SHA-256 fingerprint

10:09:29:93:04:C5:95:6A:98:C9:73:52:1C:31:9C:EA:57:43:C7:83:AE:EA:03:37:CD:32:6F:82:12:F8:28:07
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr46alphasslca2025.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr46alphasslca2025
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr46alphasslca2025.crl
subjectAltName
DNS:*.zavolga.net, DNS:zavolga.net
authorityKeyIdentifier
A3:4C:AC:B1:BF:B4:88:ED:8B:74:D8:5F:34:38:C9:E9:0A:25:9E:7B
extendedKeyUsage
TLS Web Server Authentication
subjectKeyIdentifier
75:20:31:0A:79:A7:41:4A:82:1E:31:F0:45:C6:38:00:41:9B:89:8B
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Oct 11 14:13:03.036 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:EC:25:4C:BA:E0:13:79:6F:0B:3C:3E: A3:CF:F6:74:71:E0:70:57:88:D8:A2:01:73:84:A3:D9: B4:44:FE:65:8F:02:20:1A:C1:58:5A:E3:42:51:32:7E: B1:C2:97:C4:97:91:94:AC:C0:DC:4F:84:47:F5:16:34: 48:DA:7E:0D:06:5C:0E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Oct 11 14:13:03.749 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D0:C4:E6:4E:79:72:0D:E2:77:B1:E7: 2F:6C:D0:EE:A9:EB:8F:76:E2:6B:F7:42:00:91:68:57: 17:FD:05:72:B6:02:20:3A:7B:6C:77:5E:C8:6D:E4:28: 62:62:D7:AC:93:26:A6:B8:37:CE:D4:5C:1A:05:2B:59: A9:49:50:91:54:66:1D Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Oct 11 14:13:02.740 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:9D:04:AA:FC:6C:36:3F:36:0E:75:FF: 6F:C9:EB:2F:7E:53:59:9D:8F:80:17:CE:89:13:B1:AB: 94:E0:A6:BC:EC:02:21:00:A6:63:CD:17:3B:BC:F9:F0: B6:7C:A6:1D:7D:E0:84:42:43:82:BF:94:8B:FE:D6:5B: 80:E0:94:89:3F:C6:6E:9D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-19T23:10:37+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign Root R46
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2019-11-20T00:00:00+00:00
Expires
2029-03-18T00:00:00+00:00
Days remaining
880
Serial (hex)
75A8BAD878F8AF305F72DD1C1140DF3A
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A6:3C:13:98:B5:F8:DD:2D:43:2F:BE:4C:2C:19:14:2B:EA:6D:5D:02:21:FA:E7:94:71:8A:E7:59:7A:CC:A9:6D
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
03:5C:AB:73:81:87:A8:CC:B0:A6:D5:94:E2:36:96:49:FF:05:99:2C
authorityKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr3
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r3.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Issuer
C=BE O=GlobalSign nv-sa OU=Root CA CN=GlobalSign Root CA
Valid from
2019-06-19T00:00:00+00:00
Expires
2028-01-28T12:00:00+00:00
Days remaining
465
Serial (hex)
751E3F5649E74CBBF69D0026B67CAA8C
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:4E:13:78:B9:74:A9:91:AC:DC:DD:73:34:21:E3:06:1E:6F:A2:1A:04:91:C8:90:2B:AF:DE:38:55:E0:06:3E
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
AE:6C:05:A3:93:13:E2:A2:E7:E2:D7:1C:D6:C7:F0:7F:C8:67:53:A0
authorityKeyIdentifier
60:7B:66:1A:45:0D:97:CA:89:50:2F:7D:04:CD:34:A8:FF:FC:FD:4B
authorityInfoAccess
OCSP - URI:http://ocsp.globalsign.com/rootr1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----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.

View certificate JSON

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