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

telstra.com · 203.44.22.4:443

Verified

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

Subject
jurisdictionC=AU businessCategory=Private Organization serialNumber=086 174 781 C=AU ST=Victoria L=Melbourne O=Telstra Limited CN=www.telstra.com.au
Issuer
C=US O=DigiCert Inc CN=DigiCert EV RSA CA G2
Valid from
2026-02-16T00:00:00+00:00
Expires
2027-03-19T23:59:59+00:00
Days remaining
178
Serial (hex)
04E61E16F7E817B60D0C09498C056BBD
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:www.telstra.com.au, DNS:www.telstra.com, DNS:careers.telstra.com, DNS:www.careers.telstra.com, DNS:telstra.com, DNS:telstra.com.au, DNS:aem.inside.telstra.com

SHA-256 fingerprint

27:4E:15:18:48:B9:50:BF:27:E4:09:67:7C:A3:13:73:B7:08:0B:4D:A6:72:18:35:04:3D:5B:94:2D:0F:47:F6
Certificate extensions & PEM
authorityKeyIdentifier
6A:4E:50:BF:98:68:9D:5B:7B:20:75:D4:59:01:79:48:66:92:32:06
subjectKeyIdentifier
4C:EE:AE:26:DC:55:2F:CE:B6:1A:D6:D2:15:8C:5C:6A:F7:25:CB:3C
subjectAltName
DNS:www.telstra.com.au, DNS:www.telstra.com, DNS:careers.telstra.com, DNS:www.careers.telstra.com, DNS:telstra.com, DNS:telstra.com.au, DNS:aem.inside.telstra.com
certificatePolicies
Policy: 2.16.840.1.114412.2.1 Policy: 2.23.140.1.1 CPS: http://www.digicert.com/CPS
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
crlDistributionPoints
Full Name: URI:http://crl3.digicert.com/DigiCertEVRSACAG2.crl Full Name: URI:http://crl4.digicert.com/DigiCertEVRSACAG2.crl
authorityInfoAccess
OCSP - URI:http://ocsp.digicert.com CA Issuers - URI:http://cacerts.digicert.com/DigiCertEVRSACAG2.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 : Feb 16 07:29:43.104 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:A8:E3:57:A5:5C:38:4F:1D:02:02:FC: 5D:38:C9:55:F7:6B:DC:5D:66:59:C1:20:08:E7:5C:BB: F3:11:A8:CF:67:02:21:00:FA:BD:34:2F:28:BD:FD:CB: 56:B1:3A:E2:40:75:1D:A3:02:ED:B4:5E:B8:8A:A7:81: D5:DC:36:CF:86:79:85:9C 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 16 07:29:43.117 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:82:75:22:88:EC:C1:B0:C2:BF:0B:FA: CB:4B:6A:45:4D:EA:38:DB:0C:E0:0D:82:0C:A2:18:B6: E0:0F:47:28:C3:02:21:00:D6:E3:AA:D6:9C:06:C1:19: 76:94:7E:3B:4C:7B:DA:EA:EA:08:C0:71:E5:40:D4:01: B3:C9:9F:0E:7F:8C:FC:76 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 16 07:29:43.325 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:3D:E5:24:B7:4C:F1:5D:8A:58:0F:83:BD: 00:64:74:A0:88:71:5E:1A:9A:82:A0:5C:07:45:D5:D4: 55:FE:4F:62:02:20:79:F7:EC:99:4D:39:C7:98:03:3B: EE:9B:85:ED:7F:41:D4:C2:5E:D8:C6:CF:7E:54:5D:C5: DB:D5:A3:94:0F:AE
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES128-SHA256 · Checked 2026-09-22T16:56:29+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=DigiCert Inc CN=DigiCert EV RSA CA G2
Issuer
C=US O=DigiCert Inc OU=www.digicert.com CN=DigiCert Global Root G2
Valid from
2020-07-02T12:42:50+00:00
Expires
2030-07-02T12:42:50+00:00
Days remaining
1378
Serial (hex)
01678F1FEF882255D8B0A70E6B7BB220
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

95:88:EF:74:19:9E:45:AC:EF:CC:CF:C0:C4:70:10:E9:F2:A3:7A:1D:D4:4C:61:A4:E1:C6:B3:34:DA:5A:F6:14
Certificate extensions & PEM
subjectKeyIdentifier
6A:4E:50:BF:98:68:9D:5B:7B:20:75:D4:59:01:79:48:66:92:32:06
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 Full Name: URI:http://crl4.digicert.com/DigiCertGlobalRootG2.crl
certificatePolicies
Policy: X509v3 Any Policy CPS: https://www.digicert.com/CPS User Notice: Explicit Text: Any use of this Certificate constitutes acceptance of the Relying Party Agreement located at https://www.digicert.com/rpa-ua
-----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
4132
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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