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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

mdx.ac.uk · 52.223.41.154:443

Verified

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

Subject
CN=www.mdx.ac.uk
Issuer
C=US O=Amazon CN=Amazon RSA 2048 M01
Valid from
2026-08-18T00:00:00+00:00
Expires
2027-03-03T23:59:59+00:00
Days remaining
150
Serial (hex)
02BD717A612FB873E8288800BAB1A96E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.mdx.ac.uk, DNS:middlesex.mu, DNS:www.middlesex.mu, DNS:mdx.ac.uk

SHA-256 fingerprint

ED:DE:91:4A:8B:B1:EF:87:9E:0A:28:BD:B2:74:50:9B:3B:F9:ED:87:01:1D:8E:95:78:42:F1:42:88:C8:9D:A3
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
4C:5B:73:04:44:F5:FA:FB:97:46:67:1C:13:9A:F9:10:D4:6D:F1:20
subjectAltName
DNS:www.mdx.ac.uk, DNS:middlesex.mu, DNS:www.middlesex.mu, DNS:mdx.ac.uk
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 18 00:02:39.531 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:3D:2A:AA:B8:5B:DE:34:6E:E4:AB:5B:F8: D7:67:35:2E:32:0C:27:24:E5:83:39:F8:A1:4F:0A:D7: B1:DF:48:18:02:21:00:E1:E3:D8:09:5F:C3:0D:91:8E: AF:E5:87:B8:C8:67:80:8B:D9:2F:A4:65:68:13:9F:C8: C2:BD:A5:DF:90:77:92 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 18 00:02:40.328 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:D0:4F:73:E2:F5:B3:0E:40:55:54:27: 2D:58:63:FC:51:CA:DF:7A:CE:0F:1C:F6:A6:C3:0E:5C: CC:D6:82:68:47:02:20:35:DA:2D:E1:0E:09:7F:E1:8E: B0:6C:BC:FA:C6:33:3A:5D:8E:15:58:57:6A:AE:01:42: C9:80:E1:92:7D:47:E2 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 : Aug 18 00:02:39.783 2026 GMT Extensions: 00:00:05:00:09:63:99:13 Signature : ecdsa-with-SHA256 30:44:02:20:46:D4:96:37:71:3A:97:47:45:BB:10:0A: 82:9B:F1:F7:D1:86:D9:1E:AA:A5:AA:A2:E0:9B:FC:63: AF:BE:04:FE:02:20:4B:9A:0A:FA:A2:DD:81:81:FA:2A: 86:5B:11:67:04:13:A5:C8:7C:B7:8E:3B:DD:DC:CE:B0: E8:51:8A:9C:C2:20
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-04T18:54:05+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
1419
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
4105
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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