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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

TLSv1.3

dow.com · 23.222.37.177:443

Verified

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

Subject
C=US ST=Michigan L=Midland O=Dow Inc. CN=*.dow.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1
Valid from
2026-09-02T00:00:00+00:00
Expires
2027-03-19T23:59:59+00:00
Days remaining
143
Serial (hex)
0324AB4906B2ADEA877B7528FE66AA13
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:*.dow.com, DNS:dow.com

SHA-256 fingerprint

18:D5:A3:37:C6:9D:C1:C2:B5:BF:66:C8:C7:EA:DB:43:CD:EC:46:F6:B7:7A:2E:45:1B:60:CC:07:D9:63:36:6A
Certificate extensions & PEM
authorityKeyIdentifier
8A:23:EB:9E:6B:D7:F9:37:5D:F9:6D:21:39:76:9A:A1:67:DE:10:A8
subjectKeyIdentifier
7C:01:80:0D:11:1D:CA:89:28:98:FC:64:77:89:90:B9:00:28:1B:8C
subjectAltName
DNS:*.dow.com, DNS:dow.com
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Agreement
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG3TLSECCSHA3842020CA1-2.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG3TLSECCSHA3842020CA1-2.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG3TLSECCSHA3842020CA1-2.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 : Sep 2 00:08:18.063 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:48:1E:B5:EE:6A:FB:55:98:59:29:CF:02: 7D:C4:94:2B:9B:68:AD:69:8F:5F:4F:F6:1D:C8:96:29: 38:6C:A1:08:02:21:00:FB:12:25:8B:E8:9C:03:D2:4B: D1:36:BE:59:6B:7D:E3:6F:09:B7:CF:21:48:67:6A:8A: 4A:06:A1:94:91:93:21 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Sep 2 00:08:18.069 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:CA:DB:E7:4F:1A:8A:17:B8:35:A7:FC: C8:65:5D:6B:66:8E:5B:C4:A5:51:E9:94:AE:B4:2C:52: 51:AC:EC:65:4A:02:21:00:C3:D9:E2:EA:0E:28:73:4D: 0D:99:03:F0:6D:BD:A9:BF:72:A3:2E:E5:87:42:4D:57: 60:97:DC:CC:41:D9:BD:CC 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 : Sep 2 00:08:18.093 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F8:EB:7D:BF:A0:51:89:A0:BB:8C:74: B6:6E:E1:E1:B3:07:12:BA:DD:7B:61:AC:B5:9A:8B:EF: 1E:97:C9:52:6A:02:20:1C:04:21:9A:99:22:71:14:CF: 32:EC:38:A2:9B:8D:EE:37:26:B5:2E:82:A4:B3:F0:88: 4D:4D:A3:71:3E:60:F3
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-27T01:25:06+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G3 TLS ECC SHA384 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G3
Valid from
2021-04-14T00:00:00+00:00
Expires
2031-04-13T23:59:59+00:00
Days remaining
1629
Serial (hex)
0B00E92D4D6D731FCA3059C7CB1E1886
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

05:87:D6:BD:28:19:58:7A:B9:0F:B5:96:48:0A:57:93:BD:9F:75:06:A3:EA:CE:73:F5:EA:B3:66:01:7F:E2:59
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
8A:23:EB:9E:6B:D7:F9:37:5D:F9:6D:21:39:76:9A:A1:67:DE:10:A8
authorityKeyIdentifier
B3:DB:48:A4:F9:A1:C5:D8:AE:36:41:CC:11:63:69:62:29:BC:4B:C6
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG3.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG3.crl
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 Policy: 2.23.140.1.2.1 Policy: 2.23.140.1.2.2 Policy: 2.23.140.1.2.3
-----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.

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