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

ppp.de · 212.18.70.214:443

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=ppp.de
Issuer
C=US O=Let's Encrypt CN=R11
Valid from
2025-06-30T11:37:08+00:00
Expires
2025-09-28T11:37:07+00:00
Days remaining
-368
Serial (hex)
069445898382DBC00F087FF9F9CFA41C9002
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:ppp.de, DNS:www.ppp.de

SHA-256 fingerprint

41:F4:64:44:BC:16:FF:4C:50:B9:50:32:7E:94:7E:BE:20:7D:4C:11:E5:D2:16:24:46:E0:2E:85:73:D0:74:20
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
CA:75:2E:02:E8:B9:35:6E:B4:F5:E7:AC:3C:80:8F:77:9E:49:B5:87
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:ppp.de, DNS:www.ppp.de
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://r11.c.lencr.org/3.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0: 87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8 Timestamp : Jun 30 12:35:38.706 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:24:AC:2F:0F:3B:C4:87:6B:1B:63:4F:23: B8:FA:64:6B:CB:29:88:87:19:4D:A1:1A:AD:11:73:CD: AB:6A:FC:B3:02:21:00:C4:84:40:3C:6B:99:11:3A:19: 37:AF:6B:C5:2F:CC:8A:4E:69:91:E8:25:5A:B4:8C:67: 09:6F:65:D7:EE:D0:84 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 : Jun 30 12:35:38.753 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:96:05:B9:85:05:3A:A5:BD:CD:83:01: 3D:6E:94:4A:FF:05:80:BB:67:C8:3E:51:3E:0B:A0:AA: 6F:FF:6D:DB:19:02:20:4D:BD:08:DF:98:CE:34:40:E0: 3D:F8:1B:7A:A1:43:27:8C:2A:F5:C8:2C:22:08:3F:0B: 1A:C5:2F:AF:B7:FB:C6
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-01T05:30:43+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
162
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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