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

viennacix.com · 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
2026-10-17T21:21:27+00:00
Expires
2027-01-15T21:21:26+00:00
Days remaining
78
Serial (hex)
06CEC12553D1ED2A4222E5B0AAB2EB328D09
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

0D:11:4F:E7:E0:77:6D:3A:4F:17:0E:43:FC:2A:57:4C:61:19:B6:56:6E:D6:B7:37:A2:B2:FC:CF:5E:5E:24:9E
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
8E:D3:93:DA:C7:F7:7E:63:0E:38:73:79:E2:10:D3:E9:47:55:86:C2
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/10.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Oct 17 22:19:58.117 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:79:72:FE:CE:7C:C6:D6:E8:D8:BD:24:C4: FC:45:8B:33:72:C4:59:DF:53:87:84:82:FA:6D:F4:C3: 85:02:EA:AB:02:21:00:B3:2C:65:84:43:D8:7F:EF:83: B3:AD:0D:46:D3:9F:F1:CC:23:EC:F2:D4:B8:62:9F:DA: A8:75:FA:57:6C:0A:92 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Oct 17 22:19:58.724 2026 GMT Extensions: 00:00:05:00:26:C3:8F:6C Signature : ecdsa-with-SHA256 30:45:02:20:01:AC:B2:4D:C9:73:D7:7C:93:4F:28:E2: D0:06:3B:A2:9A:A9:E0:07:0C:E8:99:B2:CF:2E:C9:03: 3A:D4:B3:41:02:21:00:D0:93:23:54:DD:5C:2B:75:07: FD:81:15:09:D1:46:16:74:5D:2F:23:31:EB:4B:D9:5B: 29:E4:FB:AD:98:DA:B7
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-29T19:57:15+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
674
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-----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=
-----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
2135
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-----
MIIF9DCCA9ygAwIBAgIRAPJLbRf52a18scn+p4eCaZ8wDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjYwNTEzMDAwMDAw
WhcNMzIwOTAyMjM1OTU5WjAuMQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQ
MA4GA1UEAxMHUm9vdCBZUjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIB
ANvGJnN78CTJdWL3+eGfsLN5TrNBJs+VH9hRXqRbwxu9sGNiB0BD1fcOxbSUQCJI
M1xE13Db+5Cw1w0s0EBYsvuIP/6joF0w8cuImbgR1OGgYbSQ4OpzI+DG8SGuTlcE
873OCS+kh3srlo6vl43M5OJg4Aeo1sfHp6kTJDoIiFBNJAY+OKfX/FUvYKuhjT+n
o49lmqmupSBI5PkBQiqrEGtWU5uxU/cQWHGu8jSjFBznZqvbNPLMXMLFxCb3WTfr
JBXXjqvWG+v4bjzxjjeAtOlU7qarRDvNOyAuQYLln904M+faKx8hnLCpJ15ZqaEg
cNlY+9MMWcC5yvL2A2j3l9+2buggZX+dOE91zYmIdawTvSZuVvlbRrAlLxIB6pwM
BjneXCjYQ8+3BCCjssbSNpZU3hTcBDdhfAlEDlYr6pEatnMdmDT5BqnKC92bd0Eh
M1fbLHioLccLCuievT8ZkPhZrq7Mii7gNXAcUEAR8+lzYal+9zTg7C5DALyVOeG/
CqfRAMn1KSHCR0NSA6P8tn/mGRlnCct5rtVCLnVySVpU6H1qGg3DgTOuskf8eahT
MiYbI5ezPJmO5ertalskQ1utp74+eDy92PI4ftHKTbq9IWhH4YZKh3WnJEIt+oQv
lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD
VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB
Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0
WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW
aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV
HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB
CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL
7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx
VXETkVme/qYSAuKVHh5Ps+5BixgmwS1JkjSAc+MfrUbNssVEEnH0aEiAh+rotXAV
JSP/Ye7LJPEwD9DWG72vVWbhAcuOf5OLjz57Ctk7MgQHynZ7+PlHJtajroCaIbtC
r6tcZZaAwUQm+jQyeWdV+2hv9deOYFmKeQyjjcSrN5Nadrw+L9DZJLbA1HqeNvLh
BgqpP0fvJq2N6EtD574N6eMI7uMsJTnji2UDz9el5XLSv9fqJMuDQtYVb2oTNoKp
oUqhxPVC0aq4eG5MESaIdn8b5ZGSSeAJLMHXljEdlNza+ncfkviXk1POLnnFdvx8
/gk6M374WbLWFXw8N141B/Rl/tINGfl1TxOIiqtiMYkL02RSGb1kq34BL9NPP27z
RGMuHGnzS3hFIrRTfKxrzUZ9RzQWzEG3K6fJ3r2nqSltkeytis9DIBoFY9VmVyjL
M71DMi+y1+TRSJVClEMwvA4yL++7q9XZx5r5wBRWB4kQTKH5qyoZnDw7iiuh1lID
yDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA==
-----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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