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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

ct.edu · 64.62.152.199:443

Verified

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

Subject
C=US ST=Connecticut L=Hartford O=Connecticut State Colleges and Universities CN=www.ct.edu
Issuer
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Valid from
2026-02-27T14:26:29+00:00
Expires
2027-03-31T14:26:28+00:00
Days remaining
169
Serial (hex)
71C88CA7F70503DD345CF21C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.ct.edu, DNS:ct.edu

SHA-256 fingerprint

B8:B8:6D:7F:A5:15:8E:2F:9E:D9:70:78:74:1A:42:25:A1:2E:F7:3C:56:52:2A:8C:82:48:18:F8:80:0C:A0:01
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
basicConstraints
CA:FALSE
authorityInfoAccess
CA Issuers - URI:http://secure.globalsign.com/cacert/gsrsaovsslca2018.crt OCSP - URI:http://ocsp.globalsign.com/gsrsaovsslca2018
certificatePolicies
Policy: 1.3.6.1.4.1.4146.1.20 CPS: https://www.globalsign.com/repository/ Policy: 2.23.140.1.2.2
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/gsrsaovsslca2018.crl
subjectAltName
DNS:www.ct.edu, DNS:ct.edu
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
authorityKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
subjectKeyIdentifier
D5:DF:57:A2:B0:E3:9F:47:5D:C8:5E:17:57:73:4F:29:99:30:B9:E4
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 : Feb 27 14:26:33.685 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D8:78:CF:64:92:9F:4E:DB:19:8E:F2: D6:AF:B3:61:88:E4:44:16:92:68:75:02:A7:49:6B:E2: B0:CD:4A:90:41:02:20:7D:8F:9B:B5:8E:81:F2:F9:8E: 93:FC:D7:C6:70:0E:32:6F:85:2E:5F:1C:23:42:8A:93: E8:54:A3:92:2A:BB:84 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 : Feb 27 14:26:33.638 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:A9:2B:79:D5:17:31:D8:E9:F4:66:95: 79:EE:91:59:EB:28:6D:6F:45:92:A6:0F:14:2F:24:22: 72:65:DF:11:8F:02:20:0D:C0:DB:93:C9:17:63:9E:1A: 1C:6D:62:14:DE:88:B4:4B:89:99:21:90:AF:D3:86:97: 4E:12:D1:56:29:83:13 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99: EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9 Timestamp : Feb 27 14:26:34.598 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:59:1C:C3:4B:AF:15:42:AB:76:A9:3B:D6: 89:9F:3E:E5:98:8B:51:71:63:C9:3A:EE:BC:3F:62:14: A0:FB:B4:0A:02:20:40:4C:B2:2B:03:A5:8E:02:53:A7: E7:80:70:5F:34:E6:6D:95:90:C8:A3:01:E0:C0:40:CA: 55:79:92:84:CF:AD
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-12T17:55:35+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=BE O=GlobalSign nv-sa CN=GlobalSign RSA OV SSL CA 2018
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2018-11-21T00:00:00+00:00
Expires
2028-11-21T00:00:00+00:00
Days remaining
770
Serial (hex)
01EE5F221DFC623BD4333A8557
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

B6:76:FF:A3:17:9E:88:12:09:3A:1B:5E:AF:EE:87:6A:E7:A6:AA:F2:31:07:8D:AD:1B:FB:21:CD:28:93:76:4A
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
F8:EF:7F:F2:CD:78:67:A8:DE:6F:8F:24:8D:88:F1:87:03:02:B3:EB
authorityKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
authorityInfoAccess
OCSP - URI:http://ocsp2.globalsign.com/rootr3
crlDistributionPoints
Full Name: URI:http://crl.globalsign.com/root-r3.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.globalsign.com/repository/
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Issuer
OU=GlobalSign Root CA - R3 O=GlobalSign CN=GlobalSign
Valid from
2009-03-18T10:00:00+00:00
Expires
2029-03-18T10:00:00+00:00
Days remaining
887
Serial (hex)
04000000000121585308A2
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:B5:22:D7:B7:F1:27:AD:6A:01:13:86:5B:DF:1C:D4:10:2E:7D:07:59:AF:63:5A:7C:F4:72:0D:C9:63:C5:3B
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
basicConstraints
CA:TRUE
subjectKeyIdentifier
8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC
-----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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