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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

ns4.syt.com · 200.55.241.245:443

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=pdns4.syt.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=RapidSSL TLS RSA CA G1
Valid from
2026-07-17T00:00:00+00:00
Expires
2027-01-31T23:59:59+00:00
Days remaining
118
Serial (hex)
0A1C725296FF73E91FF24C5F46AFE457
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:pdns4.syt.com

SHA-256 fingerprint

2E:C4:2B:C5:11:6F:72:52:60:FB:B7:72:14:AA:DE:AC:05:0B:7C:C3:6A:CE:68:9B:13:E7:93:44:04:14:8C:33
Certificate extensions & PEM
authorityKeyIdentifier
0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
6E:19:58:DF:02:98:56:EE:5D:F3:3D:B6:8E:A7:9C:EE:25:59:23:50
subjectAltName
DNS:pdns4.syt.com
certificatePolicies
Policy: 2.23.140.1.2.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
crlDistributionPoints
Full Name: URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.rapidssl.com CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F: AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26 Timestamp : Jul 17 15:34:19.441 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:22:70:F0:7F:CA:0D:64:1E:98:39:22:3F: 1F:17:56:AB:73:2C:DC:10:E8:25:48:DB:90:4A:88:71: 46:FD:AB:97:02:20:23:63:00:61:61:2F:D1:04:D2:03: 34:62:B5:2C:F8:D3:70:EB:39:C2:1C:EC:53:19:A2:FD: DB:60:B1:69:DB:82 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1: BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66 Timestamp : Jul 17 15:34:19.493 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3A:89:8A:D5:29:5B:AE:F8:BA:E3:EB:E5: 26:A9:8B:04:49:08:57:F2:51:8A:3C:B1:16:3B:81:94: 90:85:DE:48:02:21:00:F0:33:7B:1E:7C:74:A4:2E:A7: 05:CA:52:AD:D0:06:B3:55:DB:64:32:3B:F9:3B:83:EB: 81:D4:93:00:D9:2D:16 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Jul 17 15:34:19.609 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3D:20:BD:C6:E7:C7:B6:19:61:93:F8:C3: B4:44:8B:1F:8C:61:11:D4:B4:61:4A:48:2A:0A:C5:99: 80:02:FB:63:02:21:00:E7:40:11:45:73:96:B7:EA:7B: E4:34:B8:CD:BE:B2:CB:A3:69:A5:33:29:0C:F0:26:CA: 70:18:1F:EC:46:0E:0F
-----BEGIN CERTIFICATE-----
MIIGGTCCBQGgAwIBAgIQChxyUpb/c+kf8kxfRq/kVzANBgkqhkiG9w0BAQsFADBg
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
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1UMys7Hy0RTd1sfxcCXOfAL3xApkhnFLlUhyxSabngZ0lRXl+1AGyeS0/m4WnZMm
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5YklfZUlhB+BjVWG5MqBRdS0GXCSjuPwurj9b14=
-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-05T09:03:49+00:00

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

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