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

heinlein-support.de · 185.97.174.115:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=*.heinlein-support.de
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-08-28T00:00:00+00:00
Expires
2027-03-14T23:59:59+00:00
Days remaining
170
Serial (hex)
0A82C7EBFE476FB9A96B71DA4F30331C
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:*.heinlein-support.de, DNS:heinlein-support.de

SHA-256 fingerprint

D8:8F:1B:05:39:45:3D:44:7A:63:0F:1F:9A:F1:9B:1D:EA:C8:CF:51:DC:18:FF:E3:15:6B:40:95:18:A2:50:5A
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
65:D1:A1:19:DC:34:89:2D:DF:68:12:DF:87:09:5C:84:DA:7A:10:A8
subjectAltName
DNS:*.heinlein-support.de, DNS:heinlein-support.de
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.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.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 : Aug 28 09:57:51.211 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:7F:3A:08:D0:61:79:1E:28:8E:CC:DB:C8: 2A:23:CC:70:F7:58:6B:04:9E:FF:CA:75:E6:9C:87:EE: 5C:28:4F:7A:02:21:00:8D:15:35:9D:F1:D0:90:E8:CE: 07:FC:20:02:58:59:68:CC:98:27:04:F5:C7:06:D0:23: 9E:79:20:69:DF:DA:F7 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 : Aug 28 09:57:51.234 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:F6:3C:2E:4C:F9:35:5B:D3:45:B6:64: CC:3F:75:18:9B:EE:FB:11:26:BD:D0:47:1E:CB:B7:08: 1B:5B:CC:7F:F3:02:21:00:BF:75:B8:E9:45:EF:7C:9D: EE:B1:AD:DB:27:C7:16:01:2E:92:96:A8:FA:5D:FA:3E: 3B:18:A4:9F:63:33:03:5F 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 : Aug 28 09:57:51.359 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:B8:EA:26:AF:39:6B:B7:AF:DE:20:99: 86:20:93:EA:0E:03:8B:72:40:55:DF:F6:00:77:CA:68: 6B:0E:9E:69:6A:02:20:26:B9:F2:F5:70:D1:B5:7A:FD: 46:25:7F:5A:20:E4:E0:79:57:54:9E:44:DC:F6:19:4E: 97:8E:C4:BB:48:9C:9A
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_CHACHA20_POLY1305_SHA256 · Checked 2026-09-25T17:28:16+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
402
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4129
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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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