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

mail.unn.ru · 85.143.0.8:443

Verified

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

Subject
CN=mail.unn.ru
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R6 AlphaSSL CA 2025
Valid from
2026-03-13T14:51:20+00:00
Expires
2027-04-14T14:51:19+00:00
Days remaining
160
Serial (hex)
4A5833E613E252EE56527F4F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:mail.unn.ru

SHA-256 fingerprint

3E:88:13:8E:7B:EE:64:75:42:AA:C5:15:95:FC:4E:EF:C7:F4:43:5B:B0:B0:57:69:38:AE:EA:5A:C3:2A:7A:01
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr6alphasslca2025.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr6alphasslca2025
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.4146.10.1.3 CPS: https://www.globalsign.com/repository/
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr6alphasslca2025.crl
subjectAltName
DNS:mail.unn.ru
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
C5:B4:93:8F:6F:2B:DC:1E:48:BF:B7:10:30:85:CE:D1:B2:BB:48:2D
subjectKeyIdentifier
E9:A9:2D:6D:DC:9E:87:33:08:2A:A7:E9:9E:D3:AA:E8:D7:A2:34:DE
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 : Mar 13 14:51:24.350 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:7C:7F:90:67:89:A8:8F:92:7C:74:A0:28: 0E:A1:63:34:16:D6:92:B9:21:A0:01:86:7C:45:4F:66: 93:16:5F:24:02:20:04:B4:73:ED:1E:BD:44:06:A9:F6: F7:44:58:C8:29:2D:BD:32:34:61:3F:5F:83:2C:00:90: E1:27:D3:54:C5:27 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 : Mar 13 14:51:23.653 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D9:6B:7F:22:F4:2A:AB:D5:0C:19:BC: E2:6A:93:D1:92:42:2B:06:F6:2A:41:50:AA:F3:D4:77: 96:E3:73:7C:41:02:20:35:12:3C:A9:B6:45:C1:FA:28: A7:87:C3:4E:B7:37:75:E2:CD:C3:BE:1D:FB:1D:BC:1F: 14:98:0F:36:B2:AB:6B 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 : Mar 13 14:51:24.572 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CE:27:89:A1:EA:2D:9A:62:E2:96:8D: 53:8C:68:43:DD:F7:91:85:98:B7:8F:13:28:88:A7:46: 25:ED:6E:86:DD:02:21:00:D0:CA:55:81:CB:00:2C:DB: 81:C3:AA:0F:31:9D:C7:C9:3E:09:26:46:47:AF:C1:62: B2:B4:52:8C:65:BE:28:3D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-11-05T02:43:26+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R6 AlphaSSL CA 2025
Issuer
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Valid from
2025-05-21T02:36:52+00:00
Expires
2027-05-21T00:00:00+00:00
Days remaining
196
Serial (hex)
837D4EB89E912FE72CAD3BC7692DDC20
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A8:83:55:92:31:F8:38:8D:AF:35:CE:41:C8:10:10:40:AE:8F:D9:B6:56:43:42:47:B9:47:5A:F5:92:CC:08:CA
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
C5:B4:93:8F:6F:2B:DC:1E:48:BF:B7:10:30:85:CE:D1:B2:BB:48:2D
authorityKeyIdentifier
AE:6C:05:A3:93:13:E2:A2:E7:E2:D7:1C:D6:C7:F0:7F:C8:67:53:A0
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr6 CA Issuers - URI:http://secure.globalsign.com/cacert/root-r6.crt
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r6.crl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.4146.10.1.3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Issuer
OU=GlobalSign Root CA - R6 O=GlobalSign CN=GlobalSign
Valid from
2014-12-10T00:00:00+00:00
Expires
2034-12-10T00:00:00+00:00
Days remaining
2956
Serial (hex)
45E6BB038333C3856548E6FF4551
Signature
RSA-SHA384
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

2C:AB:EA:FE:37:D0:6C:A2:2A:BA:73:91:C0:03:3D:25:98:29:52:C4:53:64:73:49:76:3A:3A:B5:AD:6C:CF:69
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
AE:6C:05:A3:93:13:E2:A2:E7:E2:D7:1C:D6:C7:F0:7F:C8:67:53:A0
-----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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