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

horizontel.com · 35.209.229.3:443

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
The certificate has expired.

Certificate verification failed

Subject
CN=horizontel.com
Issuer
C=US O=Let's Encrypt CN=R11
Valid from
2025-07-09T12:15:28+00:00
Expires
2025-10-07T12:15:27+00:00
Days remaining
-382
Serial (hex)
0511785D83908C912B4744961E623A5BF91B
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:horizontel.com, DNS:www.horizontel.com

SHA-256 fingerprint

AC:0A:70:2B:28:85:6F:6B:69:02:6F:F0:59:48:33:09:9D:54:A3:C0:E5:02:DF:13:CD:7D:98:36:E3:12:86:A3
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
B9:08:D9:02:37:F3:A7:48:35:6A:52:D5:BD:C7:37:2E:19:E4:B1:62
authorityKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
CA Issuers - URI:http://r11.i.lencr.org/
subjectAltName
DNS:horizontel.com, DNS:www.horizontel.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r11.c.lencr.org/28.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D: 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54 Timestamp : Jul 9 13:13:58.656 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:23:2B:A0:94:DF:02:4E:16:4F:D1:60:D4: D2:0E:D6:45:75:7B:BA:49:C5:D8:BA:FF:3F:EF:1F:FD: BA:10:76:94:02:21:00:C7:13:FA:B4:92:8C:33:C2:68: BD:2F:50:F6:5D:F3:2D:8E:4B:0A:63:2C:31:C5:18:49: 00:5E:6E:9E:B2:E4:00 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8: 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A Timestamp : Jul 9 13:13:58.730 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3B:17:F7:03:A4:51:2B:AB:24:09:B8:3E: 82:8B:9D:A8:1E:27:99:37:97:AE:99:43:3A:71:29:A2: E0:72:41:81:02:20:71:55:E2:18:93:38:0D:68:E6:42: 4B:77:BB:3B:2D:06:0C:36:BC:10:89:02:DF:73:C6:CF: F9:93:3C:47:CA:7E
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-23T16:07:59+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R11
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2024-03-13T00:00:00+00:00
Expires
2027-03-12T23:59:59+00:00
Days remaining
140
Serial (hex)
8A7D3E13D62F30EF2386BD29076B34F8
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

59:1E:9C:E6:C8:63:D3:A0:79:E9:FA:BE:14:78:C7:33:9A:26:B2:12:69:DD:E7:95:21:13:61:02:4A:E3:1A:44
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Client Authentication, TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
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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