Optus · Domain Security

Optus Domain Security

Domain security

Domain security posture for Optus, probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

TelecommunicationsAustraliaMobile Network OperatorMessagingSMSMMSTwo-Factor AuthenticationNetwork APIsCAMARAOpen GatewayIoT5GBroadbandSatelliteEnterprise

Transport & Host Security

www.optus.com.au
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 7 23:59:59 2026 GMT
sms.optus.com.au
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 12 23:59:59 2026 GMT
api.sms.optus.com.au
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 12 23:59:59 2026 GMT

Domain (DNS/Email) Security

optus.com.au
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-25'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.optus.com.au
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug  7 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: sms.optus.com.au
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 12 23:59:59 2026 GMT
  hsts: true
  hsts_max_age: 63072000
- host: api.sms.optus.com.au
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 12 23:59:59 2026 GMT
  hsts: null
domains:
- domain: optus.com.au
  dnssec: false
  caa:
  - 128 issuewild "entrust.net"
  - 0 issue "globalsign.com"
  - 0 issue "sectigo.com"
  - 0 issue "digicert.com"
  - 0 issuewild "globalsign.com"
  - 0 issue "letsencrypt.org"
  spf: true
  dmarc: true
  dmarc_policy: reject