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

ato.gov.au · 194.193.29.204:443

Verified

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

Subject
C=AU ST=Australian Capital Territory L=Canberra O=Australian Taxation Office CN=www.ato.gov.au
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Valid from
2026-08-24T00:00:00+00:00
Expires
2027-03-10T23:59:59+00:00
Days remaining
142
Serial (hex)
0BFEC7EE5BAA1E6669082A8B26F5C2B5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.ato.gov.au, DNS:ato.gov.au, DNS:g1.ato.gov.au, DNS:g2.ato.gov.au, DNS:tdv.ato.gov.au

SHA-256 fingerprint

25:7B:7E:9A:F0:A2:B4:DA:C9:3F:E2:93:7B:AD:EB:3D:29:DE:02:DA:AF:EE:4E:F5:05:CE:F4:6D:E7:CF:6C:CF
Certificate extensions & PEM
authorityKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
subjectKeyIdentifier
35:CF:18:22:19:A4:AD:13:0B:97:4F:CA:9E:D5:0A:D1:BF:34:6B:08
subjectAltName
DNS:www.ato.gov.au, DNS:ato.gov.au, DNS:g1.ato.gov.au, DNS:g2.ato.gov.au, DNS:tdv.ato.gov.au
certificatePolicies
Policy: 2.23.140.1.2.2 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://cdp.thawte.com/ThawteTLSRSACAG1.crl
authorityInfoAccess
OCSP - URI:http://status.thawte.com CA Issuers - URI:http://cacerts.thawte.com/ThawteTLSRSACAG1.crt
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 24 03:58:57.503 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:09:F6:B0:2C:FB:12:EF:CC:F2:15:B7:B5: 21:49:C3:76:5C:C0:39:84:80:23:18:2C:03:43:A0:85: 6D:08:F1:FB:02:20:4C:FD:90:11:50:9D:27:E9:1B:63: 58:7A:CB:9B:78:6F:7B:DA:7E:04:AE:B5:5B:B7:37:D1: 49:3B:4E:18:48:76 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 : Aug 24 03:58:57.608 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:54:8F:2B:80:05:EC:56:2E:BF:E3:96:81: 3D:F4:AF:0C:4C:9A:04:FD:F0:0F:66:01:04:9F:91:C0: 8D:DB:78:46:02:21:00:A2:D3:BA:27:80:36:74:ED:6A: AE:25:FA:38:34:74:22:D8:BB:2D:40:14:3F:B8:83:7D: 76:7B:98:F3:75:1E:BB 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 : Aug 24 03:58:57.636 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:20:0B:32:53:23:A3:4F:09:BC:39:3B:41:EB: 43:88:3C:40:2F:E2:05:FB:3A:55:86:9F:53:41:55:A9: 8B:68:2E:74:02:21:00:F8:AE:89:2E:4F:AF:7A:71:F3: 46:82:4C:9D:D5:B2:79:21:7E:FD:CC:F7:8E:88:D4:FB: 30:75:07:25:E3:83:5D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-19T13:49:06+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=Thawte TLS RSA CA G1
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2017-11-02T12:24:25+00:00
Expires
2027-11-02T12:24:25+00:00
Days remaining
378
Serial (hex)
090EE8C5DE5BFA62D2AE2FF7097C4857
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

4B:CC:5E:23:4F:E8:1E:DE:4E:AF:88:3A:A1:9C:31:33:5B:0B:26:E8:5E:06:6B:99:45:E4:CB:61:53:EB:20:C2
Certificate extensions & PEM
subjectKeyIdentifier
A5:8C:FE:32:CC:EB:0F:2C:D4:19:C6:08:B8:00:24:88:5D:C3:C5:B7
authorityKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE, pathlen:0
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2013-08-01T12:00:00+00:00
Expires
2038-01-15T12:00:00+00:00
Days remaining
4105
Serial (hex)
033AF1E6A711A9A0BB2864B11D09FAE5
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

CB:3C:CB:B7:60:31:E5:E0:13:8F:8D:D3:9A:23:F9:DE:47:FF:C3:5E:43:C1:14:4C:EA:27:D4:6A:5A:B1:CB:5F
Certificate extensions & PEM
basicConstraints
CA:TRUE
keyUsage
Digital Signature, Certificate Sign, CRL Sign
subjectKeyIdentifier
4E:22:54:20:18:95:E6:E3:6E:E6:0F:FA:FA:B9:12:ED:06:17:8F:39
-----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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