If you’ve spotted “Sichuan AI-Link Technology” attached to a device on your WiFi network, here’s what that actually means: it’s a real, IEEE-registered Chinese hardware manufacturer based in Anzhou, Mianyang, Sichuan. They don’t sell devices under their own brand name — instead, they make network chips and components that get built into other companies’ smart home and IoT products. Seeing their name usually just means one of your smart devices (a plug, camera, sensor, or similar) uses their hardware inside it.
How to Check Which Device It Is
- Log into your router’s admin page — usually by typing 192.168.1.1 or 192.168.0.1 into your browser (check your router’s manual or a sticker on the device itself if that doesn’t work).
- Look for a section called “Attached Devices,” “Device List,” or “DHCP Client List.”
- Sichuan AI-Link is registered for 40 MAC prefixes in total. The ones we’ve verified include: 30:88:41, D4:B7:61, B4:C9:B9, A4:29:85, 88:97:46, 80:AC:7C, 40:24:B2, B4:61:E9, 44:B2:95, 48:98:CA, 50:13:95, and 60:23:A4. If a connected device’s MAC address starts with any of these, that’s your match. For the complete list of all 40, a live lookup tool like maclookup.app will show every currently registered prefix, since this list can grow over time as the company registers more.
- Cross-check against the smart home devices you actually own — the make/model on the device itself, or its packaging, will usually confirm it.
Important: Not Every “Unknown Vendor” Is Suspicious
Worth knowing before you assume the worst: modern phones and laptops randomize their MAC address by default for privacy — this has been standard on iOS 14+, Android 10+, and Windows 10/11 for years now. That means your own phone might show up with a random-looking address and no identifiable vendor at all. That’s normal, expected behaviour, not a sign of an intruder.
What to Do If You Find a Device You Don’t Recognize
- Change your WiFi password to something strong and unique — this immediately disconnects everything, and only devices with the new password can reconnect.
- Disable WPS on your router, since it’s a common weak point for unauthorized access.
- Enable MAC address filtering if you want tighter control — this restricts your network to only pre-approved devices.
- Keep your router’s firmware updated, since outdated firmware is one of the more common ways routers get compromised.
Your ISP retains connection metadata under Australia’s Mandatory Data Retention Scheme regardless of what’s connected to your home network — worth knowing, though it’s a separate issue from local device security specifically. A VPN protects what leaves your network, not what’s already connected to it, so it won’t help you identify or block a device on your own WiFi.
