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

zoom.us · 170.114.52.2:443

Verified

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

Subject
C=US ST=California L=San Jose O=Zoom Communications, Inc. CN=*.zoom.us
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2025-12-29T00:00:00+00:00
Expires
2026-12-29T23:59:59+00:00
Days remaining
72
Serial (hex)
0BE17E1F6A86D60219A0310C0DDAF2CD
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.zoom.us, DNS:zoom.us

SHA-256 fingerprint

09:4E:8C:85:30:0C:A1:52:37:D6:7C:A5:0A:B0:44:7D:B9:AB:37:7B:B3:E5:E5:A3:18:2C:20:9E:DC:2B:0F:D1
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
0C:05:F1:82:D5:F5:DF:EF:18:0F:74:0E:27:6B:9D:12:95:D6:33:DB
subjectAltName
DNS:*.zoom.us, DNS:zoom.us
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://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 : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9: 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77 Timestamp : Dec 29 00:13:30.367 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:43:02:1F:09:10:72:2F:8D:62:F0:0F:6C:0F:3A:DA: 6D:FF:5B:5F:86:D3:38:D5:BA:34:1E:2D:94:93:DF:CF: D1:4E:C2:02:20:2C:33:56:E7:88:2E:5C:88:F1:33:C6: 1A:6C:A3:04:C6:5C:01:D1:CA:3C:A6:0C:53:76:30:9D: A9:07:6A:D2:19 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Dec 29 00:13:30.615 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:53:6C:23:DA:1D:06:06:11:82:93:C9:8B: 98:61:27:6D:07:DF:80:DD:F1:81:33:E4:48:AA:B2:D1: 5E:AD:04:9C:02:20:52:5C:AE:55:75:44:83:BE:F1:38: 6E:D1:B1:A0:AE:27:E2:EE:81:5B:F0:35:66:15:21:D5: 5A:EA:7A:6E:7C:32 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 : Dec 29 00:13:30.395 2025 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:C2:0D:80:D7:B1:AC:7A:E0:CA:AC:76: 42:56:CC:47:19:0E:34:21:9E:EE:6B:59:8F:BA:0F:FC: B0:A6:AF:34:2F:02:20:30:3F:85:7D:BB:94:33:91:62: AB:96:5C:C7:7B:EE:1F:CD:E9:C3:A3:B7:1E:2D:73:43: E3:78:7A:53:5E:C0:DF
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-18T07:26:45+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2020-09-24T00:00:00+00:00
Expires
2030-09-23T23:59:59+00:00
Days remaining
1436
Serial (hex)
085F94C02D857BE8CC14FF53EDA23E2A
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

1F:8E:B9:E9:A8:E0:66:CC:5B:38:33:E0:6B:31:29:76:4B:62:26:39:D5:B1:63:F6:00:E1:C7:91:20:BF:3E:ED
Certificate extensions & PEM
subjectKeyIdentifier
74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalRootG2.crt
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
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-----
MIIE9DCCA9ygAwIBAgIQCF+UwC2Fe+jMFP9T7aI+KjANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBH
MjAeFw0yMDA5MjQwMDAwMDBaFw0zMDA5MjMyMzU5NTlaMFkxCzAJBgNVBAYTAlVT
MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxMzAxBgNVBAMTKkRpZ2lDZXJ0IEdsb2Jh
bCBHMiBUTFMgUlNBIFNIQTI1NiAyMDIwIENBMTCCASIwDQYJKoZIhvcNAQEBBQAD
ggEPADCCAQoCggEBAMz3EGJPprtjb+2QUlbFbSd7ehJWivH0+dbn4Y+9lavyYEEV
cNsSAPonCrVXOFt9slGTcZUOakGUWzUb+nv6u8W+JDD+Vu/E832X4xT1FE3LpxDy
FuqrIvAxIhFhaZAmunjZlx/jfWardUSVc8is/+9dCopZQ+GssjoP80j812s3wWPc
3kbW20X+fSP9kOhRBx5Ro1/tSUZUfyyIxfQTnJcVPAPooTncaQwywa8WV0yUR0J8
osicfebUTVSvQpmowQTCd5zWSOTOEeAqgJnwQ3DPP3Zr0UxJqyRewg2C/Uaoq2yT
zGJSQnWS+Jr6Xl6ysGHlHx+5fwmY6D36g39HaaECAwEAAaOCAa4wggGqMB0GA1Ud
DgQWBBR0hYDAZsffN97PvSk3qgMdvu3NFzAfBgNVHSMEGDAWgBROIlQgGJXm427m
D/r6uRLtBhePOTAOBgNVHQ8BAf8EBAMCAYYwHQYDVR0lBBYwFAYIKwYBBQUHAwEG
CCsGAQUFBwMCMBIGA1UdEwEB/wQIMAYBAf8CAQAwdgYIKwYBBQUHAQEEajBoMCQG
CCsGAQUFBzABhhhodHRwOi8vb2NzcC5kaWdpY2VydC5jb20wQAYIKwYBBQUHMAKG
NGh0dHA6Ly9jYWNlcnRzLmRpZ2ljZXJ0LmNvbS9EaWdpQ2VydEdsb2JhbFJvb3RH
Mi5jcnQwewYDVR0fBHQwcjA3oDWgM4YxaHR0cDovL2NybDMuZGlnaWNlcnQuY29t
L0RpZ2lDZXJ0R2xvYmFsUm9vdEcyLmNybDA3oDWgM4YxaHR0cDovL2NybDQuZGln
aWNlcnQuY29tL0RpZ2lDZXJ0R2xvYmFsUm9vdEcyLmNybDAwBgNVHSAEKTAnMAcG
BWeBDAEBMAgGBmeBDAECATAIBgZngQwBAgIwCAYGZ4EMAQIDMA0GCSqGSIb3DQEB
CwUAA4IBAQB1i8A8W+//cFxrivUh76wx5kM9gK/XVakew44YbHnT96xC34+IxZ20
dfPJCP2K/lHz8p0gGgQ1zvi2QXmv/8yWXpTTmh1wLqIxi/ulzH9W3xc3l7/BjUOG
q4xmfrnti/EPjLXUVa9ciZ7gpyptsqNjMhg7y961n4OzEQGsIA2QlxK3KZw1tdeR
Du9Ab21cO72h2fviyy52QNI6uyy/FgvqvQNbTpg6Ku0FUAcVkzxzOZGUWkgOxtNK
Aa9mObm9QjQc2wgD80D8EuiuPKuK1ftyeWSm4w5VsTuVP61gM2eKrLanXPDtWlIb
1GHhJRLmB7WqlLLwKPZhJl5VHPgB63dx
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root CA
Valid from
2024-01-18T00:00:00+00:00
Expires
2031-11-09T23:59:59+00:00
Days remaining
1848
Serial (hex)
0FE032AB844D033106C50C8E13C8B068
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

79:D5:7B:15:DF:A6:5C:28:70:EA:FE:11:B6:37:76:59:09:CF:E9:37:B4:9C:15:CE:7F:19:40:30:CA:B3:95:AD
Certificate extensions & PEM
basicConstraints
CA:TRUE
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
authorityKeyIdentifier
03:DE:50:35:56:D1:4C:BB:66:F0:A3:E2:1B:1B:C3:97:B2:3D:D1:55
keyUsage
Digital Signature, Certificate Sign, CRL Sign
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.cn CA Issuers - URI:http://cacerts.digicert.cn/DigiCertGlobalRootCA.crt
crlDistributionPoints
Full Name: URI:http://crl.digicert.cn/DigiCertGlobalRootCA.crl
certificatePolicies
Policy: X509v3 Any Policy
-----BEGIN CERTIFICATE-----
MIIEfjCCA2agAwIBAgIQD+Ayq4RNAzEGxQyOE8iwaDANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
d3cuZGlnaWNlcnQuY29tMSAwHgYDVQQDExdEaWdpQ2VydCBHbG9iYWwgUm9vdCBD
QTAeFw0yNDAxMTgwMDAwMDBaFw0zMTExMDkyMzU5NTlaMGExCzAJBgNVBAYTAlVT
MRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5j
b20xIDAeBgNVBAMTF0RpZ2lDZXJ0IEdsb2JhbCBSb290IEcyMIIBIjANBgkqhkiG
9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuzfNNNx7a8myaJCtSnX/RrohCgiN9RlUyfuI
2/Ou8jqJkTx65qsGGmvPrC3oXgkkRLpimn7Wo6h+4FR1IAWsULecYxpsMNzaHxmx
1x7e/dfgy5SDN67sH0NO3Xss0r0upS/kqbitOtSZpLYl6ZtrAGCSYP9PIUkY92eQ
q2EGnI/yuum06ZIya7XzV+hdG82MHauVBJVJ8zUtluNJbd134/tJS7SsVQepj5Wz
tCO7TG1F8PapspUwtP1MVYwnSlcUfIKdzXOS0xZKBgyMUNGPHgm+F6HmIcr9g+UQ
vIOlCsRnKPZzFBQ9RnbDhxSJITRNrw9FDKZJobq7nMWxM4MphQIDAQABo4IBMDCC
ASwwDwYDVR0TAQH/BAUwAwEB/zAdBgNVHQ4EFgQUTiJUIBiV5uNu5g/6+rkS7QYX
jzkwHwYDVR0jBBgwFoAUA95QNVbRTLtm8KPiGxvDl7I90VUwDgYDVR0PAQH/BAQD
AgGGMHQGCCsGAQUFBwEBBGgwZjAjBggrBgEFBQcwAYYXaHR0cDovL29jc3AuZGln
aWNlcnQuY24wPwYIKwYBBQUHMAKGM2h0dHA6Ly9jYWNlcnRzLmRpZ2ljZXJ0LmNu
L0RpZ2lDZXJ0R2xvYmFsUm9vdENBLmNydDBABgNVHR8EOTA3MDWgM6Axhi9odHRw
Oi8vY3JsLmRpZ2ljZXJ0LmNuL0RpZ2lDZXJ0R2xvYmFsUm9vdENBLmNybDARBgNV
HSAECjAIMAYGBFUdIAAwDQYJKoZIhvcNAQELBQADggEBAHRBl3jN7+XHBUK0dZnu
hMdoNwD1nCROU3BTIh1TNzRI0bQ0m5+C/dCRzzlqoSAFHUlOi+OiDltWkXTzmQn6
Z8bH5PFBy5sYpc/8cNPoSzhyqcpvvEZvv/Ivc0Up+dzma7vBDJC9WrMRUUlSFSQp
kdXSmphDNkXJsgARmxzc18IN6LYMRiOWlY7RE2F900pPW60BvJHHNCX0bbSRj/Ql
bmVq8wuftBD++D+RS8K++ujpMjFBROyWfBX+woQDGsMazkmgulQdnZrdj476elOL
axRvrSgEorju1kJM7M65z2RUZrfzQYW/1rs8mRUXin6iEtad/Rv1ZI1WGYmWPyBm
pbo=
-----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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