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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

TLS

aofidc.com · 137.59.100.7:443

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=*.yun-gu.com
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-06T15:01:46+00:00
Expires
2026-11-04T15:01:45+00:00
Days remaining
39
Serial (hex)
05CCA9886E45A06E398F8F4E7B2AB5A1B3D5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.yun-gu.com

SHA-256 fingerprint

19:CF:CF:BC:C8:0B:CB:DF:F6:7B:A6:88:92:98:56:E9:8B:6C:F5:BC:63:2F:35:EA:87:AB:65:3C:29:4E:C0:52
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
F7:6A:B0:D2:F0:7E:05:79:CA:96:51:6D:D1:6A:65:E3:36:B3:5C:0A
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:*.yun-gu.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/86.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Aug 6 16:00:16.505 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:11:51:F0:B0:2A:53:AC:88:C7:BE:32:14: C0:8C:E5:71:57:38:88:7A:F8:39:9C:53:0F:D8:F0:11: 2E:C5:29:5F:02:20:29:F9:EE:0D:1D:77:80:E7:BF:D3: 62:02:D7:6B:8E:CF:9B:17:D2:39:01:A6:3C:35:9A:01: D8:4B:2F:5A:3C:8E Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Aug 6 16:00:17.008 2026 GMT Extensions: 00:00:05:00:32:10:39:B2 Signature : ecdsa-with-SHA256 30:45:02:20:20:62:4F:87:99:0A:91:57:B5:E8:42:69: 95:80:DD:A8:6D:DA:F9:B4:48:82:2D:26:C7:61:AA:2E: 03:97:32:53:02:21:00:AD:93:B8:06:EF:80:19:00:B3: C6:D3:64:8A:F6:82:C6:F1:55:A4:FF:D6:51:61:00:C8: 25:61:CD:90:8C:D3:30
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: Unavailable · Checked 2026-09-26T01:44:43+00:00

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

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