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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

outlook.com · 52.96.222.226:443

Verified

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

Subject
C=US ST=Washington L=Redmond O=Microsoft Corporation CN=outlook.com
Issuer
C=US O=DigiCert Inc CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
Valid from
2026-06-26T00:00:00+00:00
Expires
2027-01-10T23:59:59+00:00
Days remaining
112
Serial (hex)
0E371D2766FD365DADDCF4004297839E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:outlook.com, DNS:*.hotmail.com, DNS:*.internal.outlook.com, DNS:*.live.com, DNS:*.office.com, DNS:*.office365.com, DNS:*.outlook.com, DNS:*.outlook.office365.com, DNS:attachment.outlook.live.net, DNS:attachment.outlook.office.net, DNS:attachment.outlook.officeppe.net, DNS:attachments.office.net, DNS:attachments-sdf.office.net, DNS:ccs.login.microsoftonline.com, DNS:hotmail.com, DNS:mail.services.live.com, DNS:office365.com, DNS:outlook.office.com, DNS:substrate.office.com, DNS:substrate-sdf.office.com

SHA-256 fingerprint

7C:25:36:90:B4:0A:77:B8:87:7B:07:B9:62:10:47:F7:1A:17:98:10:EC:53:6F:40:C6:9D:53:4E:86:CE:97:BA
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
75:A4:42:4E:5E:59:19:90:41:43:53:3F:70:8E:3B:29:97:54:05:9D
subjectAltName
DNS:outlook.com, DNS:*.hotmail.com, DNS:*.internal.outlook.com, DNS:*.live.com, DNS:*.office.com, DNS:*.office365.com, DNS:*.outlook.com, DNS:*.outlook.office365.com, DNS:attachment.outlook.live.net, DNS:attachment.outlook.office.net, DNS:attachment.outlook.officeppe.net, DNS:attachments.office.net, DNS:attachments-sdf.office.net, DNS:ccs.login.microsoftonline.com, DNS:hotmail.com, DNS:mail.services.live.com, DNS:office365.com, DNS:outlook.office.com, DNS:substrate.office.com, DNS:substrate-sdf.office.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://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 : 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 : Jun 26 18:56:08.484 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:69:3C:E3:45:12:44:9A:8C:73:2E:94:93: 7C:23:66:5D:18:61:49:D7:FE:A8:71:BA:33:FD:65:B4: BB:02:3F:1E:02:20:08:E6:16:47:C7:AE:F9:AC:73:8A: 0B:5E:EA:F9:DB:98:A3:54:F1:C2:47:8B:30:C8:FD:6F: 5C:6D:2D:D8:D8:1C 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 : Jun 26 18:56:08.453 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:B6:3A:6C:12:32:D8:83:FD:BC:87:A9: 49:21:CE:B1:2B:E3:3E:19:CB:E4:4F:C6:D9:77:3B:B0: DE:2B:52:7F:C4:02:21:00:FA:BA:92:3C:D8:FF:9B:C6: 37:05:81:55:5A:F7:21:35:87:F4:81:2D:D8:8D:2B:73: A3:5B:70:6B:D8:9F:E5:C5 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 : Jun 26 18:56:08.514 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:19:C1:61:C5:53:81:F7:FC:52:5E:75:53: 34:CA:11:54:6A:DC:28:BC:66:98:C6:94:48:FC:84:76: F1:00:DE:3B:02:21:00:8E:DB:6E:7F:B1:22:92:33:5A: BF:AC:C1:8F:E0:B9:F2:A8:DE:A2:66:E8:E1:93:6E:80: 05:F7:45:1B:7D:56:70
-----BEGIN CERTIFICATE-----
MIIIdTCCB12gAwIBAgIQDjcdJ2b9Nl2t3PQAQpeDnjANBgkqhkiG9w0BAQsFADBZ
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMTMwMQYDVQQDEypE
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b2Z0IENvcnBvcmF0aW9uMRQwEgYDVQQDEwtvdXRsb29rLmNvbTCCASIwDQYJKoZI
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kFe2FjuWOKpWetRqtKnK5HFVuYel6eNG3hwRcj+qFR7poE1rgJIBm7Zl3JVJRLP1
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rRMFeXTI6RV1WZ495c6XCq1q228L/wDinamf0tqCMCZn1dwTVrJLEExUshzNQetc
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ggUiMB8GA1UdIwQYMBaAFHSFgMBmx9833s+9KTeqAx2+7c0XMB0GA1UdDgQWBBR1
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bYINKi5ob3RtYWlsLmNvbYIWKi5pbnRlcm5hbC5vdXRsb29rLmNvbYIKKi5saXZl
LmNvbYIMKi5vZmZpY2UuY29tgg8qLm9mZmljZTM2NS5jb22CDSoub3V0bG9vay5j
b22CFyoub3V0bG9vay5vZmZpY2UzNjUuY29tghthdHRhY2htZW50Lm91dGxvb2su
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dIIaYXR0YWNobWVudHMtc2RmLm9mZmljZS5uZXSCHWNjcy5sb2dpbi5taWNyb3Nv
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HwSBlzCBlDBIoEagRIZCaHR0cDovL2NybDMuZGlnaWNlcnQuY29tL0RpZ2lDZXJ0
R2xvYmFsRzJUTFNSU0FTSEEyNTYyMDIwQ0ExLTEuY3JsMEigRqBEhkJodHRwOi8v
Y3JsNC5kaWdpY2VydC5jb20vRGlnaUNlcnRHbG9iYWxHMlRMU1JTQVNIQTI1NjIw
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aWdpY2VydC5jb20vRGlnaUNlcnRHbG9iYWxHMlRMU1JTQVNIQTI1NjIwMjBDQTEt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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-09-20T03:42:36+00:00

Server-presented chain · 1 additional certificate

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
2021-03-30T00:00:00+00:00
Expires
2031-03-29T23:59:59+00:00
Days remaining
1651
Serial (hex)
0CF5BD062B5602F47AB8502C23CCF066
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

C8:02:5F:9F:C6:5F:DF:C9:5B:3C:A8:CC:78:67:B9:A5:87:B5:27:79:73:95:79:17:46:3F:C8:13:D0:B6:25:A9
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
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
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
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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