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

mcs.ooo · 194.88.199.17:443

Verified

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

Subject
CN=*.mcs.ooo
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign GCC R3 DV TLS CA 2020
Valid from
2025-10-02T11:02:09+00:00
Expires
2026-11-03T11:02:08+00:00
Days remaining
33
Serial (hex)
1C4DCA43CC1F06181A1E512C
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.mcs.ooo, DNS:autodiscover.mcs.ooo, DNS:mail.mcs.ooo, DNS:owa.mcs.ooo, DNS:mcs.ooo

SHA-256 fingerprint

24:B6:11:BB:60:83:78:DC:25:8B:8B:8B:54:50:40:5C:BE:4A:E7:47:86:F8:91:53:EC:5C:2F:D4:D2:E1:12:F2
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:*.mcs.ooo, DNS:autodiscover.mcs.ooo, DNS:mail.mcs.ooo, DNS:owa.mcs.ooo, DNS:mcs.ooo
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
D6:62:1A:12:FE:44:E7:17:E4:FD:10:95:D2:12:A0:DF:70:28:A5:83
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : Oct 2 11:02:13.700 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E2:EE:EC:AD:F7:ED:CF:9A:B4:D7:FD: 9D:85:90:69:5A:9A:86:97:1E:84:78:61:BF:BC:9C:1E: BE:FB:D9:C9:5E:02:21:00:EF:27:44:54:8E:72:C7:8D: 14:7F:49:E6:DD:63:09:6B:B1:E5:22:4C:D9:B7:B2:BE: 6B:C8:47:19:5F:B4:24:64 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 2 11:02:13.648 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:99:69:1C:9F:9F:26:DB:CC:33:7B:0C: B3:13:F5:CF:65:E2:93:46:E9:AA:CA:E8:04:DD:86:27: 7E:60:3D:4D:BF:02:21:00:AA:7D:B2:AD:B7:D4:AE:1E: ED:FC:85:51:B0:5A:30:74:A8:2C:BA:9A:33:E3:0D:8C: A6:E2:40:57:D0:B2:D3:58 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 2 11:02:13.628 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:60:25:9A:0B:C2:A5:0B:B4:CB:CA:75:89: 01:59:44:60:43:AB:F6:D0:E8:B7:C0:47:C8:07:9C:D1: 6B:45:D6:19:02:21:00:8D:73:8E:06:E0:EA:20:6C:96: CE:A1:CF:F5:04:9B:2F:C2:6A:6D:49:AB:1E:DE:AA:71: CB:8E:F1:1C:72:CF:62
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-01T06:31:43+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
898
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-----
MIIEsDCCA5igAwIBAgIQd70OB0LV2enQSdd00CpvmjANBgkqhkiG9w0BAQsFADBM
MSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xv
YmFsU2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjAeFw0yMDA3MjgwMDAwMDBaFw0y
OTAzMTgwMDAwMDBaMFMxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWdu
IG52LXNhMSkwJwYDVQQDEyBHbG9iYWxTaWduIEdDQyBSMyBEViBUTFMgQ0EgMjAy
MDCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKxnlJV/de+OpwyvCXAJ
IcxPCqkFPh1lttW2oljS3oUqPKq8qX6m7K0OVKaKG3GXi4CJ4fHVUgZYE6HRdjqj
hhnuHY6EBCBegcUFgPG0scB12Wi8BHm9zKjWxo3Y2bwhO8Fvr8R42pW0eINc6OTb
QXC0VWFCMVzpcqgz6X49KMZowAMFV6XqtItcG0cMS//9dOJs4oBlpuqX9INxMTGp
6EASAF9cnlAGy/RXkVS9nOLCCa7pCYV+WgDKLTF+OK2Vxw3RUJ/p8009lQeUARv2
UCcNNPCifYX1xIspvarkdjzLwzOdLahDdQbJON58zN4V+lMj0msg+c0KnywPIRp3
BMkCAwEAAaOCAYUwggGBMA4GA1UdDwEB/wQEAwIBhjAdBgNVHSUEFjAUBggrBgEF
BQcDAQYIKwYBBQUHAwIwEgYDVR0TAQH/BAgwBgEB/wIBADAdBgNVHQ4EFgQUDZjA
c3+rvb3ZR0tJrQpKDKw+x3wwHwYDVR0jBBgwFoAUj/BLf6guRSSuTVD6Y5qL3uLd
G7wwewYIKwYBBQUHAQEEbzBtMC4GCCsGAQUFBzABhiJodHRwOi8vb2NzcDIuZ2xv
YmFsc2lnbi5jb20vcm9vdHIzMDsGCCsGAQUFBzAChi9odHRwOi8vc2VjdXJlLmds
b2JhbHNpZ24uY29tL2NhY2VydC9yb290LXIzLmNydDA2BgNVHR8ELzAtMCugKaAn
hiVodHRwOi8vY3JsLmdsb2JhbHNpZ24uY29tL3Jvb3QtcjMuY3JsMEcGA1UdIARA
MD4wPAYEVR0gADA0MDIGCCsGAQUFBwIBFiZodHRwczovL3d3dy5nbG9iYWxzaWdu
LmNvbS9yZXBvc2l0b3J5LzANBgkqhkiG9w0BAQsFAAOCAQEAy8j/c550ea86oCkf
r2W+ptTCYe6iVzvo7H0V1vUEADJOWelTv07Obf+YkEatdN1Jg09ctgSNv2h+LMTk
KRZdAXmsE3N5ve+z1Oa9kuiu7284LjeS09zHJQB4DJJJkvtIbjL/ylMK1fbMHhAW
i0O194TWvH3XWZGXZ6ByxTUIv1+kAIql/Mt29PmKraTT5jrzcVzQ5A9jw16yysuR
XRrLODlkS1hyBjsfyTNZrmL1h117IFgntBA5SQNVl9ckedq5r4RSAU85jV8XK5UL
REjRZt2I6M9Po9QL7guFLu4sPFJpwR1sPJvubS2THeo7SxYoNDtdyBHs7euaGcMa
D/fayQ==
-----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
899
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

Registration / WHOIS →DNS records →