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

mx0a-0016dd01.pphosted.com · 148.163.147.116:443

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
C=US ST=Texas L=IRVING O=McKesson Corp CN=securemail.mckesson.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2025-03-05T00:00:00+00:00
Expires
2026-04-05T23:59:59+00:00
Days remaining
-187
Serial (hex)
0FFB351FF81AB9381867B932E98D9ED6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:securemail.mckesson.com

SHA-256 fingerprint

DE:DF:46:53:D6:C6:B6:26:23:30:D1:01:6C:5E:58:2B:4E:20:EE:D1:22:50:DB:24:BC:DB:54:FC:FA:4C:73:A4
Certificate extensions & PEM
authorityKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
3C:21:06:7E:70:49:48:C7:FE:0E:3B:DA:DA:8D:67:E5:47:3C:8B:9B
subjectAltName
DNS:securemail.mckesson.com
certificatePolicies
Policy: 2.23.140.1.2.2 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://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
basicConstraints
CA:FALSE
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 0E:57:94:BC:F3:AE:A9:3E:33:1B:2C:99:07:B3:F7:90: DF:9B:C2:3D:71:32:25:DD:21:A9:25:AC:61:C5:4E:21 Timestamp : Mar 5 18:39:09.805 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:80:63:EE:79:2B:19:0F:15:36:49:2E: E0:2E:FE:42:B8:4E:A0:A3:CB:A3:FE:C2:F6:66:BE:9C: BC:92:D4:04:E7:02:20:14:0B:72:56:7A:3E:72:F6:40: F6:90:87:ED:0E:17:F9:0C:52:A7:4C:47:BA:5A:1F:9B: E5:81:9C:E0:25:93:CA Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 64:11:C4:6C:A4:12:EC:A7:89:1C:A2:02:2E:00:BC:AB: 4F:28:07:D4:1E:35:27:AB:EA:FE:D5:03:C9:7D:CD:F0 Timestamp : Mar 5 18:39:09.862 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:85:18:DC:B1:7D:34:EE:71:65:03:4B: 49:23:A2:09:4A:93:93:5A:80:97:F0:B6:03:20:90:2E: A7:F6:93:24:40:02:21:00:F9:9C:15:80:3F:82:96:31: 5D:6A:18:17:C9:34:C4:A0:03:65:66:59:CD:BE:41:03: 61:25:4C:10:DB:AB:0F:55 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8: 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3 Timestamp : Mar 5 18:39:09.888 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:58:E6:6E:1D:CD:BD:06:F0:06:03:18:88: 36:83:59:A4:AD:56:1A:65:E9:92:42:2A:3A:44:C9:DD: DE:F3:AC:91:02:21:00:8E:19:75:EB:8D:50:C9:E4:1F: 35:36:8B:4E:8A:FF:DC:C3:0F:3F:08:81:E8:FA:1D:5B: 8E:79:0D:1B:43:CB:8C
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-09T22:27:43+00:00

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

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