Accepts any MAC format. Only the first 3 bytes (OUI) identify the manufacturer. Source: IEEE MA-L registry + vendor database.
// USB DEVICE IDENTIFIER (VID:PID)
Vendor ID (VID)
Product ID (PID) — optional
Find VID:PID on Windows: Device Manager > USB > Properties > Details > Hardware IDs. On Linux: lsusb. On Mac: System Information > USB.
// BULK MAC ADDRESS SCANNER
Paste MAC addresses (one per line — from ARP table, DHCP log, or network scan)
Paste raw output from: arp -a | nmap -sn | DHCP server logs | switch MAC address table. The tool extracts MAC addresses automatically.
// ROGUE DEVICE DETECTOR
Authorized Vendors (comma-separated)
Network MAC List (paste ARP table or DHCP log)
Flags devices whose hardware vendor is NOT in your authorized list. Identifies Raspberry Pi, unknown Chinese hardware, personal devices, or unauthorized access points.
Enter a MAC address, USB VID:PID, or paste a network device list above.
Identifies hardware vendors from the IEEE OUI registry and USB ID database.
All lookups are local — no data leaves your browser.
// COMMON MAC PREFIXES
// WATCH LIST
Vendors commonly associated with unauthorized or suspicious hardware: