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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

TLSv1.2

mail.stel.cl · 200.73.208.43:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=stel.cl
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-11T17:05:45+00:00
Expires
2027-01-09T17:05:44+00:00
Days remaining
88
Serial (hex)
06A62C4C8F3413D5D84B23F83769F91F8C16
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:mail.stel.cl, DNS:stel.cl, DNS:www.stel.cl

SHA-256 fingerprint

B7:AD:4D:00:97:F9:AC:19:C1:42:34:2C:B8:75:E6:D6:BE:9E:6F:FF:D6:A3:5A:B8:64:A2:AF:56:B6:18:38:86
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
21:3C:C1:C0:C8:E2:1A:B6:D5:20:DC:0A:B5:E0:AB:9D:4A:44:0C:4C
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.stel.cl, DNS:stel.cl, DNS:www.stel.cl
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/23.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 11 18:04:16.651 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:82:DF:58:35:97:C1:0F:48:C9:62:FE: AB:AA:A1:CC:AD:15:8F:20:9E:01:71:D3:76:2C:5F:71: B8:2B:BB:43:7F:02:20:30:80:DA:B9:7B:18:99:5F:B8: EF:25:F7:53:0E:73:C5:62:5E:67:45:55:0E:01:3D:D7: 66:B3:27:F0:85:C8:E7 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 11 18:04:16.724 2026 GMT Extensions: 00:00:05:00:21:30:2F:2D Signature : ecdsa-with-SHA256 30:44:02:20:2D:76:27:79:CA:6E:4B:8A:63:44:DF:C6: AF:29:47:91:DD:F8:16:53:BC:29:1E:22:A5:D2:72:B5: E1:70:22:80:02:20:75:E0:E8:64:76:78:67:A0:C9:DA: 33:31:FA:AD:B9:E4:5B:A0:80:52:F7:DE:62:96:59:68: AA:05:45:74:13:15
-----BEGIN CERTIFICATE-----
MIIGAjCCBOqgAwIBAgISBqYsTI80E9XYSyP4N2n5H4wWMA0GCSqGSIb3DQEBCwUA
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PTbtsN54
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-13T01:08:26+00:00

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

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