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

celanese.com · 20.189.28.198:443

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
C=US ST=Texas L=Irving O=Celanese International Corporation CN=celanese.com
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-01-15T00:00:00+00:00
Expires
2027-01-26T23:59:59+00:00
Days remaining
105
Serial (hex)
046DC86AD6DD5185B9750F7A470EEC60
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:celanese.com, DNS:acp.celanese.com, DNS:Advancedelastomer.com, DNS:Advancedelastomersystems.com, DNS:automotive.celanese.com, DNS:bcp.celanese.com, DNS:celanese.co.jp, DNS:celanese.com.cn, DNS:celanese.de, DNS:celanese.it, DNS:century.celanese.com, DNS:compliance.celanese.com, DNS:cp.celanese.com, DNS:Cybersafe.celanese.com, DNS:fairwaymethanol.com, DNS:foundation.celanese.com, DNS:geleen.celanese.com, DNS:healthcare.celanese.com, DNS:my.celanese.com, DNS:pki.celanese.com, DNS:origin2.celanese.com, DNS:santoprene.cn, DNS:santoprene.com, DNS:santoprene.com.cn, DNS:spondon.celanese.com, DNS:sustainability.celanese.com, DNS:www.celanese.co.jp, DNS:www.celanese.com, DNS:www.celanese.com.cn, DNS:www.celanese.de, DNS:www.celanese.it, DNS:www.clarifoil.com, DNS:www.santoprene.com, DNS:www.mobility-materials.com, DNS:mobility-materials.com, DNS:hytrel.com, DNS:www.hytrel.com, DNS:neolast.celanese.com

SHA-256 fingerprint

F1:22:35:92:60:26:32:F6:E1:27:AD:BC:54:CF:44:0F:49:78:D6:04:2E:C0:42:BC:3D:6D:DE:A8:DF:A4:78:44
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
1C:00:61:32:56:F7:54:5C:A1:BE:DB:2E:78:12:20:AC:46:10:39:EA
subjectAltName
DNS:celanese.com, DNS:acp.celanese.com, DNS:Advancedelastomer.com, DNS:Advancedelastomersystems.com, DNS:automotive.celanese.com, DNS:bcp.celanese.com, DNS:celanese.co.jp, DNS:celanese.com.cn, DNS:celanese.de, DNS:celanese.it, DNS:century.celanese.com, DNS:compliance.celanese.com, DNS:cp.celanese.com, DNS:Cybersafe.celanese.com, DNS:fairwaymethanol.com, DNS:foundation.celanese.com, DNS:geleen.celanese.com, DNS:healthcare.celanese.com, DNS:my.celanese.com, DNS:pki.celanese.com, DNS:origin2.celanese.com, DNS:santoprene.cn, DNS:santoprene.com, DNS:santoprene.com.cn, DNS:spondon.celanese.com, DNS:sustainability.celanese.com, DNS:www.celanese.co.jp, DNS:www.celanese.com, DNS:www.celanese.com.cn, DNS:www.celanese.de, DNS:www.celanese.it, DNS:www.clarifoil.com, DNS:www.santoprene.com, DNS:www.mobility-materials.com, DNS:mobility-materials.com, DNS:hytrel.com, DNS:www.hytrel.com, DNS:neolast.celanese.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
crlDistributionPoints
Full Name: URI:http://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.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 : Jan 15 11:24:24.011 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:87:C1:EE:3F:6C:31:68:1E:4B:DE:65: 75:6B:EF:A9:BD:56:BB:83:6A:CE:14:6C:EE:8D:13:29: BE:58:F1:D2:3D:02:21:00:D1:5C:D3:09:F2:FB:BA:97: 5D:DF:00:2F:72:F0:A5:20:83:D1:53:C0:0F:0F:AA:71: 27:0C:8A:BF:65:8C:EF:7F Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD: DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F Timestamp : Jan 15 11:24:24.017 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:F4:C7:C2:6A:A2:CE:1F:72:26:42:4E: 22:A2:C3:97:F8:BF:98:7F:21:F2:F1:7E:03:6C:3C:D7: 1E:95:8F:D8:B9:02:20:13:60:94:D8:A4:0B:65:E9:15: F7:6B:9E:06:23:47:D9:E3:80:8B:1C:C0:05:04:FF:B4: 0A:25:87:8E:44:54:B7 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Jan 15 11:24:24.201 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:63:89:51:47:68:5D:CC:2F:B6:12:2D:A9: 33:A4:10:17:5D:D7:E4:B1:5A:D8:7C:4B:BF:AE:F7:DF: 3C:8E:D8:85:02:20:25:AC:27:10:3B:4B:91:80:A6:FD: B8:B3:1C:00:3A:5F:CE:F3:28:74:2B:09:74:C6:2D:B6: C9:91:4D:EB:1E:27
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-13T07:26:16+00:00

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

View certificate JSON

Registration / WHOIS →DNS records →