Optus Phone Number Lookup
Identify any Optus number in seconds.
About Optus
Australia's second-biggest carrier, owned by Singapore's SingTel since 2001. The 2022 data breach exposed millions of customers — a story still being litigated three years later.
Which numbers belong to Optus?
Optus mobile numbers come from across the 04xx range. Strong customer base in NSW, ACT and major capital cities.
Common Optus number scams
Post-2022, fake "Optus identity verification" calls remain rampant — scammers exploit residual customer paranoia from the breach. Optus does not phone customers to verify identity.
Frequently asked questions
How do I know if a number belongs to Optus? ▼
Type the number into the search box above. Our database queries the official carrier registry — if the number is or used to be on Optus, you'll see it in under five seconds.
Can I find the owner of a Optus number? ▼
Yes, provided the data is publicly available. Our detailed report cross-references public records, social profiles and community spam-report databases to give you a full picture.