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

cix.at · 80.64.132.99:443

Verified

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

Subject
CN=viennacix.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-18T21:21:28+00:00
Expires
2026-11-16T21:21:27+00:00
Days remaining
54
Serial (hex)
0668168F290C91E53A0B5D6207363D8E4905
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:cix.at, DNS:cix.co.at, DNS:cix.eu, DNS:viennacix.com, DNS:www.cix.at, DNS:www.cix.eu, DNS:www.viennacix.com

SHA-256 fingerprint

3B:68:4E:F2:F7:43:E8:C5:3D:A9:E8:27:B1:FE:2F:BE:CB:67:5C:8A:98:B8:C4:CB:91:54:7B:76:F5:78:6E:BE
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
E6:64:31:35:9D:C5:73:D0:C9:41:92:54:21:A8:8D:CD:36:43:30:6F
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:cix.at, DNS:cix.co.at, DNS:cix.eu, DNS:viennacix.com, DNS:www.cix.at, DNS:www.cix.eu, DNS:www.viennacix.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/6.crl
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 : Aug 18 22:19:58.763 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:32:C6:FF:EE:57:CD:86:6E:13:36:1E:F2: B7:FB:57:90:2F:36:9C:CB:D5:7C:EB:0C:48:44:6D:22: DA:1E:EF:AD:02:21:00:A8:6B:C7:F0:DF:E1:7C:51:7C: AC:CD:B7:D9:DD:5B:E3:C8:E9:86:26:0A:E2:6E:A6:D6: FA:F0:9C:91:A8:08:53 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6C:FE:50:19:43:A8:5E:A9:16:BC:52:D1:33:E4:DC:C9: 1E:F1:41:1C:7D:25:84:20:D1:73:80:9E:18:18:EB:3A Timestamp : Aug 18 22:19:58.993 2026 GMT Extensions: 00:00:05:00:1F:C9:A8:45 Signature : ecdsa-with-SHA256 30:46:02:21:00:BB:2A:84:67:D0:25:25:DF:A2:74:DD: 63:C0:92:49:8C:04:58:46:B6:20:47:F9:20:03:35:5A: 9D:04:7E:C9:D0:02:21:00:E9:C7:3C:B7:3B:F7:46:E9: 0E:D6:51:17:99:7E:16:B9:10:95:ED:0E:81:9C:3C:6E: 76:22:0D:58:F6:F0:42:34
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-23T06:19:23+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
710
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIE2zCCAsOgAwIBAgIRAKICU/FfJpHAXcHOE7m8yk4wDQYJKoZIhvcNAQELBQAw
LjELMAkGA1UEBhMCVVMxDTALBgNVBAoTBElTUkcxEDAOBgNVBAMTB1Jvb3QgWVIw
HhcNMjUwOTAzMDAwMDAwWhcNMjgwOTAyMjM1OTU5WjAzMQswCQYDVQQGEwJVUzEW
MBQGA1UEChMNTGV0J3MgRW5jcnlwdDEMMAoGA1UEAxMDWVIxMIIBIjANBgkqhkiG
9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoVi8X2xCYgMXvJxNPKp/oF13UMgmPABB07VC
LNDtoXmt9luEZNJSBV10VyT1Pz6LD8Zq1d2gc43WNl1AdRrj4sEnazbOiz0nPpmG
Bp2hui49oZtDIY6wdKeZAi5BbNU20CH6RSBBMLSQ9cXrH8dxdv4PAJ45ssGML68U
SE3BsjC2a6cAN9L5CgXVIQi5tfNiTPoFZZ3S0OlXqLmmtdV95udWAb5b6e/F49Di
CsH0Y00Ag72BVIb1hzynmKe+X0mERBTtsb3BwmpV9ipeBjMLoR/D9cHxHQCWoi5l
TmXwY015J5rGelz1nZjJuxc2kioaX29XJBnhMkP531rSdG5uMwIDAQABo4HuMIHr
MA4GA1UdDwEB/wQEAwIBhjATBgNVHSUEDDAKBggrBgEFBQcDATASBgNVHRMBAf8E
CDAGAQH/AgEAMB0GA1UdDgQWBBQfLzW+RhSCzUCxrnksVXj699Ro+zAfBgNVHSME
GDAWgBTe51tg0CJtQCh9Pw0B/qS1UrRRlDAyBggrBgEFBQcBAQQmMCQwIgYIKwYB
BQUHMAKGFmh0dHA6Ly95ci5pLmxlbmNyLm9yZy8wEwYDVR0gBAwwCjAIBgZngQwB
AgEwJwYDVR0fBCAwHjAcoBqgGIYWaHR0cDovL3lyLmMubGVuY3Iub3JnLzANBgkq
hkiG9w0BAQsFAAOCAgEA0+zvMq3kHig1ddTmmm+RibTr9/RpX7k4buanMMRqbV/y
IvP82zAHN3mvaw+cASuVsdpd0ikjhr4hnhJQLQOzOp2ccKrsdGOAgo0vddeISFAq
EWEV4lmUM3vFF796up+bSgmJ1u6RupDCMxDgF8M3eLvGuj6L0lu3zkQ0KuQLnKxL
tB0oQqn1Idg5CuuGpMvQzk29Pa3D/qHurc0EIM9SxukQuJqq63lxsYyRQFU8yMBO
hq1w5LbfaWNRrz1uklOfI/pYkAb2E2MTZrAMQkBIE2S8Jt1F8gRc96o/xOsrgvSk
a84AisX6xq1lz1Z7jGvrnXc4TMcjxZTjiTaihcYI1JIXZiLtEMSCa5l3cu8YWd6z
dLRQlqRdclVjuQfNHawRJ6GWlkK0QJosivTKwdBw3KxEtzGo8yMHERbsy57gP1UX
HOMcmZYQC0gtyR3SxfenIM/MxC3Ia2Ypab/kQ/CTnlIn2KQ5JUC6NYrGCbhFN9bp
5lKJStEwCUnLpntcrXk5XVDCNv/5RyWpRThkGOV7GetKkQ0qAY8hCzWK6oqnAhDZ
cjlYVdWfqOw3DIOX6EDNBgAqHarRVxyF9QZdOaXSyPJ0ueD2BYJEBgaCGQ8rAaU/
Qc123V5LTXDZW4CcsPBDyhy4v+c8hClAyw/IkJlfBqxB9D+/wvIMHgECZ4ptP6o=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2171
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----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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