Network Discovery Summary Report | Generated by AI
NETWORK DISCOVERY SUMMARY
YOUR NETWORK: 192.168.1.0/24 YOUR IP: 192.168.1.52 (MacBook Air M2, this machine)
DISCOVERY PROCESS
Step 1 - Found your IP Command: ipconfig getifaddr en0 Result: 192.168.1.52
Step 2 - ARP table scan Command: arp -a | grep -v “incomplete” This lists all devices your Mac has recently communicated with. Found 10 active IPs + router + broadcast.
Step 3 - Identify Apple devices by MAC OUI Every network card has a MAC address. The first 3 octets (OUI) identify the manufacturer. Apple registered OUIs include: 3C:6A:48, 68:C6:AC, 88:E9:FE, A4:83:E7, DC:A6:32, etc. Cross-referenced each discovered MAC against known Apple OUIs. Found 3 Apple devices.
Step 4 - Port scanning (nc) Scanned common ports on each Apple device: 22 (SSH), 80 (HTTP), 443 (HTTPS), 5900 (VNC), 5353 (mDNS) This helps distinguish Mac vs iPhone vs sleeping device.
Step 5 - Device identification 192.168.1.18 -> Port 80 open -> curl revealed “TL-XDR3050易展版” This is a TP-Link extender, NOT a Mac. MAC OUI (68:AB:BC) happens to overlap with Apple range in some databases, but the device self-identifies as TP-Link via its web interface.
192.168.1.20 -> Apple OUI confirmed, no open ports, responds to ARP. Typical behavior of a Mac with default firewall (blocks all incoming by default).
192.168.1.49 -> Apple OUI confirmed, completely unreachable. Likely asleep or Wi-Fi disconnected.
Step 6 - Elimination Known devices: router (.1), TP-Link extender (.18), workstation (.36), this Mac (.52) Remaining Apple devices: .20 and .49 .49 is unreachable -> likely asleep .20 is responsive -> most likely the other Mac
RESULTS
IP STATUS DEVICE TYPE MAC (masked) ————— ———— ——————- —————— 192.168.1.1 Active Router (China Tel.) XX:XX:XX:CD:1D:6B 192.168.1.18 Active TP-Link Extender XX:XX:XX:C5:9D:CD 192.168.1.20 Active Apple (likely Mac) XX:XX:XX:53:92:E7 192.168.1.24 Active Unknown XX:XX:XX:24:57:5F 192.168.1.29 Active Unknown XX:XX:XX:F6:5F:XX 192.168.1.36 Active Workstation XX:XX:XX:D9:54:5B 192.168.1.42 Active Unknown XX:XX:XX:D4:CD:34 192.168.1.49 Unreachable Apple (likely Mac) XX:XX:XX:79:8F:31 192.168.1.52 Active MacBook Air M2 (you) –hidden– 192.168.1.53 Active Unknown XX:XX:XX:AA:E1:0E 192.168.1.54 Active Unknown XX:XX:XX:A2:3F:9D
VERDICT
Your other Mac is most likely: 192.168.1.20
Evidence:
- Apple OUI (manufacturer = Apple Inc.)
- Responsive to ARP (powered on, connected to WiFi)
- No open ports (consistent with macOS default firewall)
- Not a known device (not router, not workstation, not this Mac)
Alternative: 192.168.1.49 is also Apple but unreachable (possibly asleep or using randomized MAC that rotated).