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

mail.itmpd.com · 88.86.116.53:443

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=itmpd.com
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-09-14T18:17:09+00:00
Expires
2026-12-13T18:17:08+00:00
Days remaining
79
Serial (hex)
06FF641D5F5F8735D8CD394B9405AF73B37D
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:itmpd.com, DNS:www.itmpd.com

SHA-256 fingerprint

22:7B:F2:E4:74:57:C1:65:E7:68:D3:1D:54:47:64:8B:23:F8:C9:72:39:54:A7:DB:2E:99:2B:8C:F7:CF:1E:48
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
3C:C7:DC:0E:48:E5:D9:B0:2F:BB:8C:42:DB:DA:1C:77:AB:CB:3B:EC
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:itmpd.com, DNS:www.itmpd.com
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/126.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB: B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14 Timestamp : Sep 14 19:15:39.923 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:13:4D:94:33:86:0B:E5:D0:A5:FD:72:D8: 4D:57:E5:F1:D4:3A:7A:1F:1F:AE:8C:4A:B6:EE:82:62: 9B:A8:61:06:02:20:6E:57:BE:36:DC:7B:FD:87:CD:DA: 4C:28:03:AD:1A:B5:47:52:B6:A1:67:E7:63:A8:96:C1: 7E:BB:66:7E:97:CD 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 : Sep 14 19:15:40.363 2026 GMT Extensions: 00:00:05:00:40:FC:67:39 Signature : ecdsa-with-SHA256 30:46:02:21:00:8F:B3:D2:06:CB:9B:B4:F0:5D:AD:04: B2:D6:07:77:7F:A1:10:C5:6C:0B:C6:57:08:AF:F1:5A: 5F:E7:3A:FF:2A:02:21:00:C4:9F:86:57:96:5F:6D:D1: 00:35:9D:0E:94:87:CA:C3:80:59:16:15:D7:E6:8F:41: E1:B0:BA:FF:E4:36:D5:E9
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-25T05:15:24+00:00

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

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