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

retn.ru · 46.46.137.21:443

Verified

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

Subject
C=RU ST=Moscow L=Moscow O=JSC RetnNet CN=*.retn.ru
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Valid from
2025-10-28T10:36:04+00:00
Expires
2026-11-29T10:36:03+00:00
Days remaining
60
Serial (hex)
3E0C0E7B63B396AC1EFF3FB6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.retn.ru, DNS:www.retn.ru, DNS:owa.retn.ru, DNS:autodiscover.retn.ru, DNS:mail.retn.ru, DNS:retn.ru

SHA-256 fingerprint

C4:D8:16:F8:C2:39:B6:34:F5:61:BE:92:1F:10:E9:AA:AA:8B:27:26:EF:E9:6B:55:1E:B7:9B:61:BA:E4:BF:9C
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.20 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.2
subjectAltName
DNS:*.retn.ru, DNS:www.retn.ru, DNS:owa.retn.ru, DNS:autodiscover.retn.ru, DNS:mail.retn.ru, DNS:retn.ru
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
52:08:F2:D3:A1:8D:E8:E9:CE:F4:3E:FE:32:ED:92:55:99:92:02:00
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Oct 28 10:36:08.391 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F2:65:7A:7C:FE:20:5E:A4:42:26:1A: C2:54:46:BE:25:6E:25:76:23:85:6C:16:F8:4B:50:88: 49:D0:B4:CB:29:02:21:00:B4:A9:9E:C5:16:9A:ED:A8: 3D:26:B2:44:7B:64:96:67:44:DC:7C:77:E4:7B:43:51: F7:D1:09:87:69:6A:FA:32 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Oct 28 10:36:08.353 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:8E:0D:FB:93:2A:F7:53:46:BB:20:CD: C1:A9:A3:34:3E:B9:8D:CB:5A:13:E1:72:23:92:EA:94: 75:C7:6E:3C:66:02:21:00:B8:A8:ED:DB:BA:DD:DB:29: 2A:87:FE:41:32:D3:B3:92:13:B0:9D:E8:1C:2A:E0:30: B2:73:C2:7A:65:0B:B6:2C 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 : Oct 28 10:36:08.517 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:77:B0:4B:53:85:B9:01:22:40:48:47:DF: 58:FF:35:BD:D6:60:6E:1B:18:91:3E:D0:DF:10:95:ED: 4F:4F:2F:D5:02:20:63:B7:1D:09:6F:42:75:3C:90:73: 5B:B0:A5:9B:4E:D9:E8:19:B4:A4:E0:2B:8D:7C:03:19: DE:6E:ED:70:85:E4
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-09-30T01:23:47+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2018-11-21T00:00:00+00:00
Expires
2028-11-21T00:00:00+00:00
Days remaining
782
Serial (hex)
01EE5F221DFC623BD4333A8557
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B6:76:FF:A3:17:9E:88:12:09:3A:1B:5E:AF:EE:87:6A:E7:A6:AA:F2:31:07:8D:AD:1B:FB:21:CD:28:93:76:4A
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
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 - R3 O=GlobalSign CN=GlobalSign
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2009-03-18T10:00:00+00:00
Expires
2029-03-18T10:00:00+00:00
Days remaining
900
Serial (hex)
04000000000121585308A2
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:B5:22:D7:B7:F1:27:AD:6A:01:13:86:5B:DF:1C:D4:10:2E:7D:07:59:AF:63:5A:7C:F4:72:0D:C9:63:C5:3B
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
-----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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