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

ncat.edu · 15.197.192.224:443

Verified

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

Subject
CN=ncat.edu
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M04
Valid from
2026-07-27T00:00:00+00:00
Expires
2027-02-09T23:59:59+00:00
Days remaining
110
Serial (hex)
080FC1BA059242958CEF36B0C311AF54
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:ncat.edu, DNS:*.ncat.edu

SHA-256 fingerprint

04:6C:8A:CB:A7:4E:44:F5:C6:81:72:9C:B5:E7:B6:F9:DC:D2:1F:8D:49:DC:F8:16:07:AD:8D:4B:0E:34:11:9E
Certificate extensions & PEM
authorityKeyIdentifier
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
subjectKeyIdentifier
C8:87:45:F4:CD:93:A7:1C:74:82:5F:A7:43:63:07:DC:3B:FF:43:17
subjectAltName
DNS:ncat.edu, DNS:*.ncat.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.r2m04.amazontrust.com/r2m04.crl
authorityInfoAccess
OCSP - URI:http://ocsp.r2m04.amazontrust.com CA Issuers - URI:http://crt.r2m04.amazontrust.com/r2m04.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 : Jul 27 17:33:32.049 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:FC:E4:EE:9B:93:56:BA:C8:9E:5E:AA: 41:A2:87:D5:D0:C5:B4:4E:72:70:72:F4:8C:0D:13:4F: EA:29:EB:4F:F4:02:20:3B:40:CC:A8:DE:9E:E8:23:AE: F7:4D:2E:F6:97:A1:C8:F3:C9:5B:BC:3D:40:2F:7A:1A: 8B:41:6E:A8:C5:59:D1 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 : Jul 27 17:33:32.231 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:7A:29:AE:D1:4A:72:8D:E5:1E:C8:74:F8: 81:32:43:02:F4:D7:6D:65:90:62:09:AB:44:39:6C:BA: DB:68:34:4E:02:21:00:D3:65:D5:D1:8F:A9:52:0D:C4: FA:8F:45:E5:2F:D7:EE:93:27:68:04:38:8E:37:A2:4F: C9:63:78:30:CF:63:1C Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 8E:CA:47:0B:AC:DE:6A:F3:A2:06:B0:A4:7A:84:B7:46: FE:1F:C6:BF:95:3E:25:E6:9B:4E:E4:02:48:F3:C6:E8 Timestamp : Jul 27 17:33:32.256 2026 GMT Extensions: 00:00:05:00:07:1B:1C:1F Signature : ecdsa-with-SHA256 30:45:02:21:00:B3:CA:6F:F8:ED:62:5F:B4:E0:D0:20: B5:DB:F6:E8:0C:B5:38:5F:73:64:77:8E:90:21:E7:D5: 85:D0:FF:B7:C6:02:20:1D:D6:32:1A:50:4F:65:33:A1: B9:55:39:C6:B5:9D:6A:3C:EE:80:03:A2:DD:09:37:73: 7B:93:C6:98:10:EC:E7
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-22T21:28:03+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Amazon CN=Amazon RSA 2048 M04
Issuer
C=US O=Amazon CN=Amazon Root CA 1
Valid from
2022-08-23T22:26:35+00:00
Expires
2030-08-23T22:26:35+00:00
Days remaining
1401
Serial (hex)
0773124F2A952E3ED18A58BDB85D1BC0CE5F27
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:8B:DF:6E:23:AC:97:1E:B4:E6:26:B2:79:DD:6A:26:F0:57:51:0F:1D:E3:94:29:3A:5E:EA:28:60:DE:01:9B
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
1F:52:92:61:56:82:54:7F:81:66:D8:1D:3D:0A:AA:32:5C:87:DD:08
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
4087
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

Registration / WHOIS →DNS records →