Hidden camera device checker

Every device on a Wi-Fi network has a MAC address, and the first half of it names the manufacturer. Paste one or more MAC addresses below and see instantly whether any belong to a known camera or surveillance brand. Free, no signup, and the lookup runs entirely in your browser.

How to get the MAC addresses on your network

Three easy ways, from anywhere:

1. Router admin page. Open the router's address (often 192.168.1.1) and look for "connected devices" or "DHCP clients". Works at home, rarely possible in a rental.
2. A network scanner app. RF Signal Detector scans the Wi-Fi you're connected to and lists every device it finds, so you can check a rental's network in about a minute.
3. Your laptop. On a Mac, arp -a in Terminal lists devices your computer has seen on the network with their MAC addresses.

How to read the results

A camera brand match means the manufacturer primarily makes cameras or surveillance gear. That device deserves a physical look: follow our Airbnb sweep guide or hotel guide to locate it. A makes cameras match means the vendor sells cameras among many other products, like Google or TP-Link, so a doorbell, speaker, or plug is just as likely. Unknown vendors are usually phones with randomized addresses, not spies.

Remember what this can and cannot prove: a camera that is wired, offline, or on a second hidden network never appears in a Wi-Fi device list. Our guide on what detector apps can really do covers those limits honestly.

Frequently asked questions

What is a MAC address?

A MAC address is a hardware ID that every network device has, written like A4:CF:12:0E:3B:91. The first half identifies the manufacturer, which is registered publicly with the IEEE. That is what this tool looks up.

Where do I find the MAC addresses of devices on a network?

Your router's admin page lists connected devices with their MAC addresses, and network scanner apps show them too. RF Signal Detector's network scan lists every device on the Wi-Fi you're connected to.

A device shows as "unknown vendor". Is that suspicious?

Not by itself. Modern phones and laptops randomize their MAC addresses for privacy, and those randomized addresses are not in the public registry. An unknown entry that stays online 24/7 when no phones are around is worth a closer look.

The vendor is a camera brand. What now?

Stay calm and verify physically. A Wyze or Hikvision entry means a camera-brand device is on the network, which is normal in a home with doorbells or baby monitors, but in a rental you were told had no indoor cameras it is a red flag. Find it, photograph it, and report it.