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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

cpp.edu · 3.33.238.99:443

Verified

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

Subject
CN=cpp.edu
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-08-14T00:00:00+00:00
Expires
2027-02-27T23:59:59+00:00
Days remaining
121
Serial (hex)
06513C2C709EEDE322D4D8793F7B2626
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:cpp.edu

SHA-256 fingerprint

9F:D2:00:9D:94:1F:77:4D:3A:FE:84:3C:75:8B:08:43:0A:31:D8:7C:24:A2:6E:6A:BF:2C:2F:DC:E5:35:07:B9
Certificate extensions & PEM
authorityKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
subjectKeyIdentifier
A7:9C:A0:57:B2:F1:62:EF:10:C3:E6:BE:F9:E8:CB:AF:90:42:EC:C5
subjectAltName
DNS:cpp.edu
certificatePolicies
Policy: 2.23.140.1.2.1
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl.r2m01.amazontrust.com/r2m01.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m01.amazontrust.com CA Issuers - URI:http://crt.r2m01.amazontrust.com/r2m01.cer
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 : Aug 14 02:20:52.404 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:AF:2C:F3:26:4A:E4:08:80:D9:B8:EB: CC:B8:AD:28:48:B3:80:15:9B:C6:16:34:85:6A:BB:74: 51:CC:96:37:E5:02:21:00:A7:E5:B8:6F:85:E2:21:69: 82:D6:36:88:A4:8B:E9:85:A2:80:CB:64:CC:1F:12:FC: 2F:D8:B4:26:FC:46:B9:BA 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 : Aug 14 02:20:52.426 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:2D:9F:4E:31:E5:46:45:58:13:09:33:9B: 14:46:41:AA:7A:FE:F3:1E:33:41:F7:12:9F:51:DA:10: 3F:F1:74:5A:02:20:4A:72:5B:AB:03:55:08:EA:9C:E9: 50:23:DF:A9:B3:72:63:6F:E1:2D:DE:D9:BA:0E:55:3D: 44:82:F7:F5:40:9D 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 : Aug 14 02:20:52.491 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:EA:2D:46:9D:AE:42:9D:3D:D8:D8:EC: 0D:A5:D9:98:AC:08:0E:C3:D1:22:0F:06:2B:F1:44:D3: B0:F8:D0:9E:E2:02:21:00:CC:D0:77:97:3C:A3:56:71: 48:26:EE:17:90:9A:7D:E0:22:51:CF:EE:B9:3D:FD:6E: CA:81:0C:4A:EA:BF:3F:FF
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-29T00:00:18+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M01
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:21:28+00:00
Expires
2030-08-23T22:21:28+00:00
Days remaining
1394
Serial (hex)
077312380B9D6688A33B1ED9BF9CCDA68E0E0F
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

53:38:EB:EC:8F:B2:AC:60:99:61:26:D3:E7:6A:A3:4F:D0:F3:31:8A:C7:8E:BB:7A:C8:F6:F1:36:1F:48:4B:33
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
subjectKeyIdentifier
81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85
authorityKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityInfoAccess
OCSP - URI:http://ocsp.rootca1.amazontrust.com CA Issuers - URI:http://crt.rootca1.amazontrust.com/rootca1.cer
crlDistributionPoints
Full Name: URI:http://crl.rootca1.amazontrust.com/rootca1.crl
certificatePolicies
Policy: 2.23.140.1.2.1
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=Amazon CN=Amazon Root CA 1
Issuer
C=US ST=Arizona L=Scottsdale O=Starfield Technologies, Inc. CN=Starfield Services Root Certificate Authority - G2
Valid from
2015-05-25T12:00:00+00:00
Expires
2037-12-31T01:00:00+00:00
Days remaining
4081
Serial (hex)
067F944A2A27CDF3FAC2AE2B01F908EEB9C4C6
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

87:DC:D4:DC:74:64:0A:32:2C:D2:05:55:25:06:D1:BE:64:F1:25:96:25:80:96:54:49:86:B4:85:0B:C7:27:06
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08
authorityKeyIdentifier
9C:5F:00:DF:AA:01:D7:30:2B:38:88:A2:B8:6D:4A:9C:F2:11:91:83
authorityInfoAccess
OCSP - URI:http://ocsp.rootg2.amazontrust.com CA Issuers - URI:http://crt.rootg2.amazontrust.com/rootg2.cer
crlDistributionPoints
Full Name: URI:http://crl.rootg2.amazontrust.com/rootg2.crl
certificatePolicies
Policy: X509v3 Any Policy
-----BEGIN CERTIFICATE-----
MIIEkjCCA3qgAwIBAgITBn+USionzfP6wq4rAfkI7rnExjANBgkqhkiG9w0BAQsF
ADCBmDELMAkGA1UEBhMCVVMxEDAOBgNVBAgTB0FyaXpvbmExEzARBgNVBAcTClNj
b3R0c2RhbGUxJTAjBgNVBAoTHFN0YXJmaWVsZCBUZWNobm9sb2dpZXMsIEluYy4x
OzA5BgNVBAMTMlN0YXJmaWVsZCBTZXJ2aWNlcyBSb290IENlcnRpZmljYXRlIEF1
dGhvcml0eSAtIEcyMB4XDTE1MDUyNTEyMDAwMFoXDTM3MTIzMTAxMDAwMFowOTEL
MAkGA1UEBhMCVVMxDzANBgNVBAoTBkFtYXpvbjEZMBcGA1UEAxMQQW1hem9uIFJv
b3QgQ0EgMTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALJ4gHHKeNXj
ca9HgFB0fW7Y14h29Jlo91ghYPl0hAEvrAIthtOgQ3pOsqTQNroBvo3bSMgHFzZM
9O6II8c+6zf1tRn4SWiw3te5djgdYZ6k/oI2peVKVuRF4fn9tBb6dNqcmzU5L/qw
IFAGbHrQgLKm+a/sRxmPUDgH3KKHOVj4utWp+UhnMJbulHheb4mjUcAwhmahRWa6
VOujw5H5SNz/0egwLX0tdHA114gk957EWW67c4cX8jJGKLhD+rcdqsq08p8kDi1L
93FcXmn/6pUCyziKrlA4b9v7LWIbxcceVOF34GfID5yHI9Y/QCB/IIDEgEw+OyQm
jgSubJrIqg0CAwEAAaOCATEwggEtMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/
BAQDAgGGMB0GA1UdDgQWBBSEGMyFNOy8DJSULghZnMeyEE4KCDAfBgNVHSMEGDAW
gBScXwDfqgHXMCs4iKK4bUqc8hGRgzB4BggrBgEFBQcBAQRsMGowLgYIKwYBBQUH
MAGGImh0dHA6Ly9vY3NwLnJvb3RnMi5hbWF6b250cnVzdC5jb20wOAYIKwYBBQUH
MAKGLGh0dHA6Ly9jcnQucm9vdGcyLmFtYXpvbnRydXN0LmNvbS9yb290ZzIuY2Vy
MD0GA1UdHwQ2MDQwMqAwoC6GLGh0dHA6Ly9jcmwucm9vdGcyLmFtYXpvbnRydXN0
LmNvbS9yb290ZzIuY3JsMBEGA1UdIAQKMAgwBgYEVR0gADANBgkqhkiG9w0BAQsF
AAOCAQEAYjdCXLwQtT6LLOkMm2xF4gcAevnFWAu5CIw+7bMlPLVvUOTNNWqnkzSW
MiGpSESrnO09tKpzbeR/FoCJbM8oAxiDR3mjEH4wW6w7sGDgd9QIpuEdfF7Au/ma
eyKdpwAJfqxGF4PcnCZXmTA5YpaP7dreqsXMGz7KQ2hsVxa81Q4gLv7/wmpdLqBK
bRRYh5TmOTFffHPLkIhqhBGWJ6bt2YFGpn6jcgAKUj6DiAdjd4lpFw85hdKrCEVN
0FE6/V1dN2RMfjCyVSRCnTawXZwXgWHxyvkQAiSr6w10kY17RSlQOYiypok1JR4U
akcjMS9cmvqtmg5iUaQqqcT5NJ0hGA==
-----END CERTIFICATE-----

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

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