An unknown number that keeps calling occupies a strange space. It feels minor enough that people hesitate to raise it, and unsettling enough that they cannot ignore it. Harassment, scam contact, a withheld number turning up at odd hours, or a number found somewhere it should not have been.
We provide phone number search in Perth and throughout Western Australia, for private clients, law firms, insurers and employers.
How we run phone number search in Perth
We work from lawful lookup and open source sources to identify what can be identified about a number and its origin, and we cross reference against other information you already hold. We are clear about a hard limit here: intercepting communications is a federal offence under the Telecommunications (Interception and Access) Act 1979, and no investigator can lawfully obtain call content or read messages. Anyone offering that is either lying or committing an offence.
What Western Australia law means for this work
Western Australia requires two licences under the Security and Related Activities (Control) Act 1996, administered by WA Police Licensing Services. The business needs an inquiry agent’s licence under section 29 and the individual operative needs an investigator’s licence under section 30. Section 61 requires a licensed operator to carry an identity card and produce it on request to the person receiving the service, so you are entitled to ask on the spot.
Section 5 prohibits using a listening device to record or monitor a private conversation you are not a party to, with exceptions for consent of all principal parties and for one party consent where the recording is reasonably necessary to protect that party’s lawful interests.
Section 9 makes it an offence to knowingly publish or communicate a private conversation or a record of a private activity obtained through a listening or optical device, subject to exceptions including consent, legal proceedings and reasonable protection of lawful interests.
None of that is a formality. The rules differ genuinely between Australian jurisdictions, and evidence gathered outside them is frequently inadmissible and can expose the person who gathered it. Working inside the WA framework is what makes the result usable.
The federal statutory tort of serious invasion of privacy, which commenced on 10 June 2025 under Schedule 2 of the Privacy Act 1988, applies on top of WA law and contains no exemption for private investigators.
This is general information about how we operate, not legal advice. For advice on your circumstances, speak with your lawyer.
What you receive
You receive what could be established about the number and its origin, documented so that it can be given to police, to a lawyer, or used to support an intervention order application.
Where we work in Western Australia
The Perth metropolitan region covers thirty local government areas. Operationally that is the central corridor through Perth, Vincent, Subiaco and South Perth, the western suburbs through Nedlands, Claremont and Cottesloe, the coastal north through Stirling, Joondalup and Wanneroo, the eastern hills through Bayswater, Swan, Kalamunda and Mundaring, the south east through Canning, Gosnells and Armadale, and the south west through Melville, Fremantle, Cockburn, Kwinana and Rockingham, with Mandurah in the Peel region alongside. Beyond Perth we work the South West, Great Southern, Wheatbelt, Mid West, Goldfields and Esperance, Pilbara, Kimberley and Gascoyne regions.
Where the evidence ends up
- Magistrates Court of Western Australia. Summary crime and civil claims to $75,000, with minor cases to $10,000.
- District Court of Western Australia. Indictable crime, civil claims to $750,000, and unlimited jurisdiction for personal injury damages.
- Supreme Court of Western Australia. The General Division and the Court of Appeal.
- State Administrative Tribunal. Administrative review, including security and inquiry agent licensing decisions.
- WorkCover WA. Conciliation and Arbitration Services under the Workers Compensation and Injury Management Act 2023, which commenced on 1 July 2024.
- Federal Circuit and Family Court of Australia. Family law is federal, so a family matter runs under Commonwealth law even though the conduct investigated is governed by WA rules.
Frequently asked questions
Can you tell me who owns any mobile number?
Not always, and honesty here matters more than a sales answer. Carrier records are protected. What can often be established comes from lawful lookup sources, open source traces and cross referencing, and results vary considerably between numbers.
Can you access someone’s calls or messages?
No. That is a federal offence and we will not do it. If someone has offered you that service, they have told you something important about how they operate.
Do you cover regional Western Australia as well as Perth?
Yes. Perth work can generally be mobilised faster and at lower cost. Regional work carries travel time and expense, and we will tell you honestly whether the likely result justifies it before you commit.
Talk to us about a WA matter
Every enquiry starts with a confidential conversation about what you actually need, and sometimes that conversation ends with us saying an investigation is not warranted. Call 1300 792 283 or get in touch for a free consultation and a written quote before any work begins.
See also Phone Number Search in Melbourne, our Western Australia coverage and our Perth page.