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

TLSv1.2

internet.co.za · 196.30.251.186:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed
The certificate has expired.

Certificate verification failed

Subject
CN=internet.co.za
Issuer
C=US O=Let's Encrypt CN=R3
Valid from
2021-02-22T07:43:48+00:00
Expires
2021-05-23T07:43:48+00:00
Days remaining
-1960
Serial (hex)
030EEDBB2130EA9AD9955CDE524A042DE3E0
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:internet.co.za

SHA-256 fingerprint

DD:FB:30:DA:9C:B4:08:F6:BF:24:5C:71:C7:C6:90:34:C0:51:5C:58:08:45:30:89:5A:D4:30:99:AC:0E:F1:45
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
58:AE:B2:19:46:55:A5:A3:DE:3B:D9:D4:D6:EE:D8:27:EE:1D:ED:97
authorityKeyIdentifier
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
OCSP - URI:http://r3.o.lencr.org CA Issuers - URI:http://r3.i.lencr.org/
subjectAltName
DNS:internet.co.za
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1 CPS: http://cps.letsencrypt.org
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E: E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3 Timestamp : Feb 22 08:43:48.941 2021 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:46:8E:95:65:F2:1E:27:2B:38:BE:D9:F3: 29:6E:4B:D6:0A:5E:37:87:1B:3D:BC:57:7E:A3:0E:DF: 24:45:B9:FF:02:21:00:97:84:C6:01:16:66:06:61:50: 25:A0:90:06:D3:50:C5:2E:F3:D7:EE:91:71:D5:AF:A7: 17:D3:CE:4D:39:2A:6D Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77: 15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13 Timestamp : Feb 22 08:43:49.153 2021 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:20:03:FE:8C:02:FA:6C:3D:85:16:FC:9E: 0B:10:76:CF:86:68:77:6D:42:4A:CD:A0:82:88:51:C4: 07:0A:8B:49:02:21:00:8E:B1:64:C7:25:20:73:DA:C6: BF:30:F7:7A:48:80:F7:5A:2C:66:BB:03:04:57:23:78: BB:3A:96:3E:B6:97:EC
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-03T23:05:17+00:00

Server-presented chain · 1 additional certificate

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=R3
Issuer
O=Digital Signature Trust Co. CN=DST Root CA X3
Valid from
2020-10-07T19:21:40+00:00
Expires
2021-09-29T19:21:40+00:00
Days remaining
-1831
Serial (hex)
400175048314A4C8218C84A90C16CDDF
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

73:0C:1B:DC:D8:5F:57:CE:5D:C0:BB:A7:33:E5:F1:BA:5A:92:5B:2A:77:1D:64:0A:26:F7:A4:54:22:4D:AD:3B
Certificate extensions & PEM
basicConstraints
CA:TRUE, pathlen:0
keyUsage
Digital Signature, Certificate Sign, CRL Sign
authorityInfoAccess
CA Issuers - URI:http://apps.identrust.com/roots/dstrootcax3.p7c
authorityKeyIdentifier
C4:A7:B1:A4:7B:2C:71:FA:DB:E1:4B:90:75:FF:C4:15:60:85:89:10
certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.44947.1.1.1 CPS: http://cps.root-x1.letsencrypt.org
crlDistributionPoints
Full Name: URI:http://crl.identrust.com/DSTROOTCAX3CRL.crl
subjectKeyIdentifier
14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
-----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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