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

TLSv1.2

mail.chinasatcom.com · 123.127.200.36:443

Verified

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

Subject
C=CN ST=北京市 L=北京市 O=中国卫通集团股份有限公司 CN=mail.chinasatcom.com
Issuer
C=CN O=China Financial Certification Authority CN=CFCA OV OCA
Valid from
2026-01-20T07:24:18+00:00
Expires
2027-01-20T07:24:17+00:00
Days remaining
86
Serial (hex)
201501AF7DFF45B64F53B6297429253E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:mail.chinasatcom.com

SHA-256 fingerprint

A9:CF:51:60:E2:90:5C:1B:73:D3:DC:7D:D0:8B:E3:D7:E4:BE:81:30:57:D0:29:66:8D:D3:97:A5:71:9A:0D:AA
Certificate extensions & PEM
basicConstraints
CA:FALSE
authorityInfoAccess
OCSP - URI:http://ocsp.cfca.com.cn/ocsp CA Issuers - URI:http://gtc.cfca.com.cn/ovoca/ovoca.cer
subjectAltName
DNS:mail.chinasatcom.com
keyUsage
Digital Signature, Key Encipherment
subjectKeyIdentifier
68:79:27:F1:13:C0:D5:A3:F3:52:D8:79:DE:69:0C:A8:62:6D:65:8B
extendedKeyUsage
TLS Web Server Authentication
ct_precert_scts
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 20 07:24:20.029 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:DB:75:0A:D7:2C:B7:A8:03:DB:50:65: 3A:25:BC:8C:98:98:6F:46:E3:31:D4:31:69:C6:E0:71: 13:67:38:DF:C2:02:21:00:FF:83:0F:59:F3:40:91:4F: F1:7B:95:F6:71:52:AE:14:5F:5A:F9:82:3B:D7:B6:37: DE:06:3D:50:3D:A9:D4:47 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:A2:39:67:C6:0D:B6:46:87:C6:6F:3D:F9:99:94:76: 93:A6:A6:11:20:84:57:D5:55:E7:E3:D0:A1:D9:B6:46 Timestamp : Jan 20 07:24:20.025 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A3:47:96:7C:46:D0:98:32:F3:A7:24: EE:C8:9E:1B:1A:96:DA:FA:37:4C:B9:3B:1E:F9:65:52: 54:6F:B7:9E:05:02:20:2C:20:DD:30:BA:09:8A:EC:59: 2E:BF:F4:90:21:3A:B0:65:B1:45:D4:1B:40:0D:26:5E: E1:81:B6:FF:F4:17:91 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 20 07:24:20.035 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:12:61:76:29:38:4F:BC:9C:D5:05:EB:20: 2F:4E:EC:B9:5C:A4:B0:A2:F8:16:38:76:05:0D:49:E5: 4E:60:CA:2E:02:20:76:69:D3:E5:B3:2C:F4:D8:D2:8B: 7B:33:00:79:08:8A:23:9E:9D:7D:52:32:AD:0F:80:F8: E6:CB:75:83:89:23 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 00:1A:5D:1A:1C:2D:93:75:B6:48:55:78:F8:2F:71:A1: AE:6E:EF:39:7D:29:7C:8A:E3:15:7B:CA:DE:E1:A0:1E Timestamp : Jan 20 07:24:20.178 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:8F:13:A8:B2:39:E3:35:39:A7:0A:C5: A6:8A:9D:39:F9:63:50:F9:96:7E:E7:34:9B:AC:52:48: EC:F8:84:36:F4:02:20:08:AD:97:40:5D:44:40:F1:00: 6F:5A:91:40:ED:B8:BB:12:24:E4:7F:62:A7:29:B6:7E: 25:DC:D4:1B:BC:2F:7E
authorityKeyIdentifier
66:B3:EF:FB:54:95:87:E9:AC:A5:96:56:AE:E6:7D:ED:3A:D0:43:D1
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.cfca.com.cn/us/us-12.htm
crlDistributionPoints
Full Name: URI:http://crl.cfca.com.cn/OVOCA/RSA/allCRL.crl 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-GCM-SHA256 · Checked 2026-10-25T18:12:53+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=CN O=China Financial Certification Authority CN=CFCA OV OCA
Issuer
C=CN O=China Financial Certification Authority CN=CFCA EV ROOT
Valid from
2015-03-25T02:02:56+00:00
Expires
2029-12-25T02:02:56+00:00
Days remaining
1156
Serial (hex)
F9DF6ADFF564BEA68B82
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

F0:7B:BB:DE:07:6F:9B:40:C5:7C:C4:BE:FE:DE:97:CA:1F:53:B9:AE:14:7F:03:5D:28:4C:BF:53:F3:43:2F:B8
Certificate extensions & PEM
authorityInfoAccess
OCSP - URI:http://ocsp.cfca.com.cn/ocsp
authorityKeyIdentifier
E3:FE:2D:FD:28:D0:0B:B5:BA:B6:A2:C4:BF:06:AA:05:8C:93:FB:2F
basicConstraints
CA:TRUE
certificatePolicies
Policy: X509v3 Any Policy CPS: http://www.cfca.com.cn/us/us-12.htm
crlDistributionPoints
Full Name: URI:http://crl.cfca.com.cn/evrca/RSA/crl1.crl
keyUsage
Certificate Sign, CRL Sign
subjectKeyIdentifier
66:B3:EF:FB:54:95:87:E9:AC:A5:96:56:AE:E6:7D:ED:3A:D0:43:D1
extendedKeyUsage
TLS Web Client Authentication, E-mail Protection, TLS Web Server Authentication
-----BEGIN CERTIFICATE-----
MIIFfDCCA2SgAwIBAgILAPnfat/1ZL6mi4IwDQYJKoZIhvcNAQELBQAwVjELMAkG
A1UEBhMCQ04xMDAuBgNVBAoMJ0NoaW5hIEZpbmFuY2lhbCBDZXJ0aWZpY2F0aW9u
IEF1dGhvcml0eTEVMBMGA1UEAwwMQ0ZDQSBFViBST09UMB4XDTE1MDMyNTAyMDI1
NloXDTI5MTIyNTAyMDI1NlowVTELMAkGA1UEBhMCQ04xMDAuBgNVBAoMJ0NoaW5h
IEZpbmFuY2lhbCBDZXJ0aWZpY2F0aW9uIEF1dGhvcml0eTEUMBIGA1UEAwwLQ0ZD
QSBPViBPQ0EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDn14xTy0bH
zkaeyACeq6ryfxxG5zZT1fCL4lmw7sk6SVmOKNfE60Gf7W6orksrFVIbIMK+VrYp
+aYyhScq8EJT9xXBgXK2HqtpaDGOeclspJvcs+rXn9tlT789NBp3i5U+nLE9M1bR
CHSx3Hzu8p7Aeqllou+8nZ2egaVbWFL1zC1JENupSSI9Yjbefhb06y/TVxQ0x4Zt
zwPwLcd8NUtSruldolxPbhQeCZNJMPq1GKMxhd5pDwY4mCKxDeraqhTNXui9Aef3
qyi2Ic9EXmdNPARkZJU2XTJ9FJ+DE+ChaIvfJ/VwQfM0eGlBn/SAaav54jBmRnec
PeD6YfpuiJ8vAgMBAAGjggFKMIIBRjA4BggrBgEFBQcBAQQsMCowKAYIKwYBBQUH
MAGGHGh0dHA6Ly9vY3NwLmNmY2EuY29tLmNuL29jc3AwHwYDVR0jBBgwFoAU4/4t
/SjQC7W6tqLEvwaqBYyT+y8wDwYDVR0TAQH/BAUwAwEB/zBEBgNVHSAEPTA7MDkG
BFUdIAAwMTAvBggrBgEFBQcCARYjaHR0cDovL3d3dy5jZmNhLmNvbS5jbi91cy91
cy0xMi5odG0wOgYDVR0fBDMwMTAvoC2gK4YpaHR0cDovL2NybC5jZmNhLmNvbS5j
bi9ldnJjYS9SU0EvY3JsMS5jcmwwDgYDVR0PAQH/BAQDAgEGMB0GA1UdDgQWBBRm
s+/7VJWH6aylllau5n3tOtBD0TAnBgNVHSUEIDAeBggrBgEFBQcDAgYIKwYBBQUH
AwQGCCsGAQUFBwMBMA0GCSqGSIb3DQEBCwUAA4ICAQDKER8qcBmZGOG8GOJ670VW
OSg3UovOoc7/xz2mE+enyEcSwn/0QrL8C5DSA6nMvBMrCWEytYPofGQUXTwtlu78
GLxYNn3A/RtzczJ+/BXIhoe3aOT4tQ+2s9vrFRfIXs4CkmqHhfYSvArokdayYmBd
78psIwS5LCUzGKSn7y8UmAgoxiy7RtrVt5c1wvJyeuYk1Z1l8MN1szPrmAb4HS/D
qnB+0qdhFGvfOyv7lg6/wlIAkN84cHlKNC3JvyFHaCIAyhTPgjUayUvBKFK7XwN9
utIXl2L3IZX7zfxGS/J9+ZeNwyblQKmd/MKydJu9Ak6+ZMLLgjlCFkihJIn9Ur8M
2KQigz7YPDVIJjOtS7ljOQVGh88LPUnQ1fBY7RwagficS/xclIOnaXhoyWzg7EcQ
/T1/O4FkpMqKuOreaI5NExjAT8cKizyY2wcOOXKIYri3Ewnbm+00IaYYaiQRGUR6
pzFFKxdFMbStCtI4ObN+A9tB7cnBCW4vz3sAJd/OgmLF38XTa+/km3c1nQOfhCGs
6kx2heN/DgFAc+P7ldObo/kgGQtR6tr02gyXCFWnLMtT0+CoNOY0o3T+LbEqYeKL
W7p29G9sgHgoqLFibWNMSKG1QvevkhjUMOD/g48f/nMSYsbU++yEaLvjvRHbb5ON
IPkcE28TRhQQKmDKI+DRIg==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=CN O=China Financial Certification Authority CN=CFCA EV ROOT
Issuer
C=CN O=China Financial Certification Authority CN=CFCA EV ROOT
Valid from
2012-08-08T03:07:01+00:00
Expires
2029-12-31T03:07:01+00:00
Days remaining
1162
Serial (hex)
184ACCD6
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

5C:C3:D7:8E:4E:1D:5E:45:54:7A:04:E6:87:3E:64:F9:0C:F9:53:6D:1C:CC:2E:F8:00:F3:55:C4:C5:FD:70:FD
Certificate extensions & PEM
authorityKeyIdentifier
E3:FE:2D:FD:28:D0:0B:B5:BA:B6:A2:C4:BF:06:AA:05:8C:93:FB:2F
basicConstraints
CA:TRUE
keyUsage
Certificate Sign, CRL Sign
subjectKeyIdentifier
E3:FE:2D:FD:28:D0:0B:B5:BA:B6:A2:C4:BF:06:AA:05:8C:93:FB:2F
-----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.

View certificate JSON

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