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

zeltelecom.com · 89.223.71.50:443

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=zeltelecom.com
Issuer
C=US O=Let's Encrypt CN=R3
Valid from
2024-03-13T07:15:18+00:00
Expires
2024-06-11T07:15:17+00:00
Days remaining
-860
Serial (hex)
0385173FE9F1DA0DD48FCF85FFB0B9EF1B50
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.zeltelecom.com, DNS:zeltelecom.com

SHA-256 fingerprint

F7:CA:ED:7E:7B:76:CC:B0:9E:D4:E1:A1:CC:48:15:0B:0F:C7:0C:AC:CE:A3:39:2D:FF:A1:CD:EB:42:AE:3A:CB
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
50:69:FB:4C:C4:71:32:FB:C5:FF:35:33:22:78:D4:6F:5C:9A:81:D9
authorityKeyIdentifier
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
OCSP - URI:http://r3.o.lencr.org CA Issuers - URI:http://r3.i.lencr.org/
subjectAltName
DNS:www.zeltelecom.com, DNS:zeltelecom.com
certificatePolicies
Policy: 2.23.140.1.2.1
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B: 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17 Timestamp : Mar 13 08:15:18.061 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F1:F5:57:8D:BC:CF:54:02:4C:50:D1: C0:80:BB:71:AE:28:87:8E:55:68:E4:A1:53:16:66:F6: 26:F0:7C:F4:48:02:21:00:E1:E7:B0:07:B2:12:DB:A9: CC:3C:8C:68:06:0E:07:16:45:31:60:76:9C:21:6A:7F: 63:7F:98:09:01:54:D9:84 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB: 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73 Timestamp : Mar 13 08:15:18.057 2024 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:EB:F4:5E:4F:02:33:03:EA:75:44:83: 74:D7:6B:E5:13:B5:7C:4E:59:7E:65:16:31:99:C8:72: 18:7A:62:19:7D:02:20:1B:FF:21:FD:16:E3:A1:CE:7C: 52:E6:1E:50:A2:20:05:8D:03:D9:23:62:1C:2D:97:7E: 95:42:0F:77:8F:D8:15
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-18T08:46:50+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R3
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2020-09-04T00:00:00+00:00
Expires
2025-09-15T16:00:00+00:00
Days remaining
-398
Serial (hex)
912B084ACF0C18A753F6D62E25A75F5A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

67:AD:D1:16:6B:02:0A:E6:1B:8F:5F:C9:68:13:C0:4C:2A:A5:89:96:07:96:86:55:72:A3:C7:E7:37:61:3D:FD
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
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
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/
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1
-----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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