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

TLSv1.2

dns2.ceystel.com.ar · 190.52.80.12:443

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 expires within 30 days.

Certificate verification failed

Subject
CN=mail.ceystel.com.ar
Issuer
C=US ST=Arizona L=Scottsdale O=GoDaddy.com, Inc. OU=http://certs.godaddy.com/repository/ CN=Go Daddy Secure Certificate Authority - G2
Valid from
2026-05-05T13:31:18+00:00
Expires
2026-11-19T13:31:18+00:00
Days remaining
27
Serial (hex)
038738BA420677D7
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:mail.ceystel.com.ar

SHA-256 fingerprint

20:E6:E0:34:9E:2F:23:0A:11:95:52:F5:18:04:3B:74:09:8A:30:73:8A:ED:CE:8B:DA:41:00:71:38:B1:74:72
Certificate extensions & PEM
basicConstraints
CA:FALSE
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
keyUsage
Digital Signature, Key Encipherment
crlDistributionPoints
Full Name: URI:http://crl.godaddy.com/gdig2s1-72081.crl
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 2.16.840.1.114413.1.7.23.1 CPS: http://certificates.godaddy.com/repository/
authorityInfoAccess
CA Issuers - URI:http://certificates.godaddy.com/repository/gdig2.crt OCSP - URI:http://ocsp.godaddy.com/
authorityKeyIdentifier
40:C2:BD:27:8E:CC:34:83:30:A2:33:D7:FB:6C:B3:F0:B4:2C:80:CE
subjectAltName
DNS:mail.ceystel.com.ar
subjectKeyIdentifier
CD:3B:40:46:EF:51:6B:B9:35:00:69:E2:23:DC:C2:93:0C:20:BE:05
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : May 5 13:31:19.430 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:DF:7F:B7:2B:86:6E:F4:EB:1A:22:59: 80:97:6E:9C:30:B4:91:E6:1D:B7:20:6B:47:6E:DB:1D: 5A:13:24:5D:52:02:20:38:29:D9:57:73:5F:F0:DE:61: B8:AC:73:BF:32:D8:27:8D:36:94:DD:57:2F:65:81:85: 78:DF:66:24:49:5B:35 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 : May 5 13:31:19.748 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:DF:59:83:E2:E9:DE:3B:E5:16:12:9E: CA:6E:D5:E3:49:F0:01:26:D2:2A:7D:A9:4C:DA:71:5F: 35:09:67:65:5E:02:21:00:BF:9B:04:5B:2E:77:E7:E4: 73:99:43:EB:19:E8:A5:93:76:9F:0B:00:0B:E2:FE:78: 95:40:2A:FE:0E:DE:15:20 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : May 5 13:31:20.068 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:CD:C0:22:DF:ED:57:14:C1:D3:78:4F: 0D:C7:AA:2E:D7:B8:93:97:34:ED:3E:62:A7:75:C8:1C: F6:F5:90:D7:64:02:20:32:D5:CF:45:39:E9:28:1C:E7: F9:9A:14:A3:30:2B:95:78:D7:D9:F2:9F:0B:B3:28:18: 1D:C4:3E:3D:C1:50:6B
-----BEGIN CERTIFICATE-----
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lw==
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-22T14:48:40+00:00

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

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