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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

octech.edu · 99.83.132.153:443

Verified

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

Subject
CN=*.octech.edu
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-05-20T00:00:00+00:00
Expires
2026-12-03T23:59:59+00:00
Days remaining
47
Serial (hex)
0F61EB0E57B63A9561F40917ECAA99B1
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.octech.edu, DNS:www.octech.edu, DNS:octech.edu

SHA-256 fingerprint

32:6A:A6:78:BE:A4:CC:5E:C0:BA:79:BD:44:CB:B0:F2:63:A5:14:ED:E8:21:CF:71:8F:3A:D6:49:15:61:52:21
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
44:86:AE:8E:78:89:FB:B9:43:B0:F8:DE:C1:5F:57:50:5F:82:3D:44
subjectAltName
DNS:*.octech.edu, DNS:www.octech.edu, DNS:octech.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 : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB: C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD Timestamp : May 20 01:36:20.029 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:C4:CD:B5:44:8B:7F:B1:40:65:23:11: 60:41:06:8B:05:16:DA:C7:0D:B0:08:CE:8C:BA:E5:39: 96:6A:E9:24:52:02:21:00:FD:3A:9C:1B:42:4D:2A:FC: 96:60:BA:5B:35:BC:CD:56:92:35:47:50:63:CB:31:2C: 1A:D1:8C:81:9F:68:9C:10 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 : May 20 01:36:20.054 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:04:CD:13:41:B7:86:CB:C9:89:2D:11:A0: E4:03:E7:17:EC:FE:0B:99:33:04:0D:D5:B3:3E:2C:46: BD:59:18:7A:02:21:00:E5:76:3E:BE:88:41:18:2A:57: 6C:B9:86:BC:E1:DC:B2:28:B5:34:4A:2C:D7:3A:81:62: A1:9F:6E:3B:C8:02:63 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65: 01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8 Timestamp : May 20 01:36:20.021 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:FC:09:4D:41:B8:22:88:BC:DF:BB:BB: FC:A0:7F:74:98:22:9F:CB:B1:A4:56:C2:BE:68:98:14: 4F:A5:07:B2:6E:02:21:00:BD:23:6B:22:0A:9F:F4:1A: 4C:0B:F4:3D:1D:D2:E6:1A:A0:13:93:0C:89:37:80:A9: 72:68:66:21:65:C0:F1:44
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-17T10:36:02+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
1406
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
4092
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-----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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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