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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

mail.hostynet.fr · 82.67.50.170:443

Verified

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

Subject
CN=mail.hostynet.fr
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-28T03:55:56+00:00
Expires
2027-01-26T03:55:55+00:00
Days remaining
73
Serial (hex)
053D91CFAFFE059A2AD6FA7DD440481553BA
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:mail.hostynet.fr, DNS:webmail.hostynet.fr

SHA-256 fingerprint

CA:BE:8E:56:3C:C1:06:15:85:AC:0D:EF:E5:08:1A:A1:1A:FB:28:90:EB:EB:95:68:F7:16:A4:23:3D:6D:76:8D
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F2:10:27:19:16:CE:B0:8C:E6:0A:BF:63:D7:87:41:D8:7A:32:70:CB
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:mail.hostynet.fr, DNS:webmail.hostynet.fr
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/59.crl
ct_precert_scts
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 : Oct 28 04:54:26.460 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:6B:D0:DC:39:AA:6D:46:56:71:4A:2E:B2: B2:D6:A8:24:E3:48:F3:9B:05:A8:C0:93:21:97:15:71: 24:A7:1B:E6:02:20:04:3C:B1:31:44:4C:2C:C5:6F:9D: 66:98:23:94:DF:10:57:0E:E5:BD:2C:07:64:38:AF:B2: 8A:2A:76:16:6E:84 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A2:81:00:18:73:4E:17:6E:1D:47:E0:95:40:F3:81:BA: 54:66:97:CD:63:A8:43:50:71:6E:B8:09:4E:DA:F1:0D Timestamp : Oct 28 04:54:27.087 2026 GMT Extensions: 00:00:05:00:30:37:53:A9 Signature : ecdsa-with-SHA256 30:45:02:21:00:8A:8B:04:F5:75:84:3C:36:E6:F5:4A: 78:9A:87:12:06:76:F1:B9:47:42:E7:B5:6B:FE:BB:C2: BD:5C:CB:44:C8:02:20:45:2D:44:76:CF:FC:E2:6C:5F: 45:70:85:4A:82:88:F5:2F:5A:81:7B:BE:91:A9:30:9A: 82:19:CF:E8:BB:27:88
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-11-13T12:49:24+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
659
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
2120
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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