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

TLSv1.3

rudn.ru · 37.18.93.135:443

Verified

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

Subject
CN=*.rudn.ru
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 DV TLS CA 2020
Valid from
2025-12-09T12:30:20+00:00
Expires
2027-01-10T12:30:19+00:00
Days remaining
72
Serial (hex)
6F8E328D83DA30B4F5976A61
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.rudn.ru, DNS:rudn.ru

SHA-256 fingerprint

D6:36:61:74:08:D8:F7:74:2C:EB:BC:7D:D2:DC:6D:C3:A8:3D:57:53:71:91:02:80:5A:5D:B6:DE:C7:CE:E3:36
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr3dvtlsca2020.crt OCSP - URI:http://ocsp.globalsign.com/gsgccr3dvtlsca2020
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.10 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsgccr3dvtlsca2020.crl
subjectAltName
DNS:*.rudn.ru, DNS:rudn.ru
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C
subjectKeyIdentifier
FA:42:51:BE:04:35:97:08:49:89:83:91:E5:E5:BC:F6:DC:3F:4F:C7
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 : Dec 9 12:30:27.691 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:25:30:D8:86:D9:2C:F0:FF:71:03:AE:B4: 07:F2:08:BC:41:F5:91:21:5C:CE:68:7F:BF:E8:CB:E9: 2A:53:57:A9:02:20:00:EF:EF:F2:90:9E:7A:B8:3F:A9: D2:D8:25:86:DF:F9:2E:9C:48:63:CC:EB:68:10:C0:1D: 39:20:D7:E4:7C:D3 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 : Dec 9 12:30:27.638 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:8E:CB:E0:FC:97:16:18:A1:8C:77:50: 44:D8:A9:E3:16:43:CD:DA:FE:FD:3D:12:9A:84:9E:F9: 04:9C:A2:43:AF:02:20:0D:74:FF:EC:4D:4D:81:33:64: 54:2F:6D:31:D6:41:83:D5:AB:CB:27:45:F8:54:9F:38: AA:DD:58:8A:52:98:09 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 : Dec 9 12:30:27.861 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C6:0B:4A:15:5E:D2:38:E4:30:E8:99: F6:C0:0A:66:C8:82:FE:36:BF:32:90:21:CB:CD:18:C1: D5:53:5F:B6:6A:02:21:00:99:24:FA:D8:11:45:EA:56: C4:F2:F3:23:01:79:BC:99:F9:BD:31:D7:01:CC:A3:9A: 6D:BA:B2:55:25:98:92:86
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-29T14:19:56+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 DV TLS CA 2020
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2020-07-28T00:00:00+00:00
Expires
2029-03-18T00:00:00+00:00
Days remaining
870
Serial (hex)
77BD0E0742D5D9E9D049D774D02A6F9A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

76:25:38:43:95:09:C4:11:C4:37:D3:C5:67:56:3E:13:78:67:12:81:FC:4A:14:64:AD:D0:31:87:08:43:67:6E
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
0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C
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 CA Issuers - URI:http://secure.globalsign.com/cacert/root-r3.crt
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
870
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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