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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

liopen.fr · 185.22.128.254:443

Verified

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

Subject
CN=www.liopen.fr
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-07T03:46:54+00:00
Expires
2026-12-06T03:46:53+00:00
Days remaining
44
Serial (hex)
05FA61F03BDDA2CAB13EDA578A337A5D2BAE
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:blog.liopen.fr, DNS:gis.liopen.fr, DNS:liopen.fr, DNS:presentations.liopen.fr, DNS:www.liopen.fr

SHA-256 fingerprint

89:2F:29:29:A9:DF:F7:87:3F:0E:61:D5:B5:7A:9F:B4:8D:49:DB:23:CB:35:9A:39:D3:B6:0D:A2:65:89:3E:9B
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
12:AD:46:3F:5B:90:F6:58:50:47:60:CF:A5:4E:C7:65:D1:47:E5:A3
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:blog.liopen.fr, DNS:gis.liopen.fr, DNS:liopen.fr, DNS:presentations.liopen.fr, DNS:www.liopen.fr
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/47.crl
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 : Sep 7 04:45:24.054 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:BB:38:EB:C0:63:0D:2D:C9:E5:88:87: 0A:26:50:6F:42:60:7A:16:8C:7A:22:99:CC:47:1E:50: 8F:BE:9E:DA:4A:02:20:2B:85:C9:69:57:5F:CA:43:5A: 35:57:E5:A2:67:92:47:21:45:E7:6B:4B:2B:06:32:2A: 3B:FB:A5:60:CE:70:8C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Sep 7 04:45:22.064 2026 GMT Extensions: 00:00:05:00:3E:13:9C:F0 Signature : ecdsa-with-SHA256 30:44:02:20:5D:E9:96:14:45:98:32:C6:21:5C:69:A8: 09:66:A5:EC:BF:9B:B1:C6:8E:6A:EE:CF:7A:AC:FD:AF: 68:E5:26:A4:02:20:4C:F9:64:D6:91:FA:23:0B:B8:05: 3D:90:84:0C:C7:1C:7E:8E:FC:03:FC:F5:E2:9E:D0:7F: 26:74:7D:16:AF:AA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-22T22:35:03+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
681
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
2142
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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