AltoBeam Inc. MAC address prefixes
MAC Address Vendor Lookup: Find who made a network card from its MAC address (IEEE registry), spot randomized and virtual machine addresses, and convert formats. Paste many.
The first half of a MAC address is assigned by the IEEE to the company that made the network adapter, so it tells you
what a device on your network is: the Apple phone, the HP printer, the VMware VM. Paste one address in any notation, or
whole arp -a, ipconfig /all, DHCP lease or switch MAC table output. Phones and newer Windows,
macOS and Android versions often use random ("private") addresses, which no vendor owns; those are pointed out. Vendors
come from the IEEE Registration Authority's
public listings (59,125 assignments, downloaded 2026-10-27).
Try: VMware (00:50:56), Hyper-V (00:15:5D), Apple (3C:22:FB), Raspberry Pi (DC:A6:32), a 36-bit block (8C:1F:64:AF:A)
58 blocks registered to AltoBeam Inc. in the IEEE registry (downloaded 2026-10-27).
| Prefix | Block | Registered name | Country |
|---|---|---|---|
| 08-76-83 | MA-L | AltoBeam Inc. | CN |
| 20-98-ED | MA-L | AltoBeam Inc. | CN |
| 2C-CC-7A | MA-L | AltoBeam Inc. | CN |
| 2C-D8-DE | MA-L | AltoBeam Inc. | CN |
| 30-BE-29 | MA-L | AltoBeam Inc. | CN |
| 34-98-7C | MA-L | AltoBeam Inc. | CN |
| 38-54-F5 | MA-L | AltoBeam Inc. | CN |
| 38-77-07 | MA-L | AltoBeam Inc. | CN |
| 38-BE-AB | MA-L | AltoBeam Inc. | CN |
| 44-29-1E | MA-L | AltoBeam Inc. | CN |
| 44-72-AC | MA-L | AltoBeam Inc. | CN |
| 48-A4-FD | MA-L | AltoBeam Inc. | CN |
| 48-D0-1C | MA-L | AltoBeam Inc. | CN |
| 4C-2F-7B | MA-L | AltoBeam Inc. | CN |
| 4C-37-DE | MA-L | AltoBeam Inc. | CN |
| 4C-60-BA | MA-L | AltoBeam Inc. | CN |
| 50-EE-9B | MA-L | AltoBeam Inc. | CN |
| 54-14-E9 | MA-L | AltoBeam Inc. | CN |
| 58-C5-87 | MA-L | AltoBeam Inc. | CN |
| 5C-4E-EE | MA-L | AltoBeam Inc. | CN |
| 60-56-EE | MA-L | AltoBeam Inc. | CN |
| 60-DC-81 | MA-L | AltoBeam Inc. | CN |
| 64-70-84 | MA-L | AltoBeam Inc. | CN |
| 68-48-B4 | MA-L | AltoBeam Inc. | CN |
| 6C-22-1A | MA-L | AltoBeam Inc. | CN |
| 6C-A6-13 | MA-L | AltoBeam Inc. | CN |
| 78-F1-3B | MA-L | AltoBeam Inc. | CN |
| 7C-AA-DE | MA-L | AltoBeam Inc. | CN |
| 80-1A-23 | MA-L | AltoBeam Inc. | CN |
| 80-E8-69 | MA-L | AltoBeam Inc. | CN |
| 84-7A-B6 | MA-L | AltoBeam Inc. | CN |
| 88-28-7D | MA-L | AltoBeam Inc. | CN |
| 88-9E-9A | MA-L | AltoBeam Inc. | CN |
| 8C-5C-53 | MA-L | AltoBeam Inc. | CN |
| 90-31-4B | MA-L | AltoBeam Inc. | CN |
| 94-FF-7D | MA-L | AltoBeam Inc. | CN |
| 98-08-18 | MA-L | AltoBeam Inc. | CN |
| 98-87-CC | MA-L | AltoBeam Inc. | CN |
| 98-A8-29 | MA-L | AltoBeam Inc. | CN |
| 9C-1C-37 | MA-L | AltoBeam Inc. | CN |
| A0-CA-4A | MA-L | AltoBeam Inc. | CN |
| A4-EF-15 | MA-L | AltoBeam Inc. | CN |
| B4-FB-E3 | MA-L | AltoBeam Inc. | CN |
| BC-AD-AE | MA-L | AltoBeam Inc. | CN |
| C0-2E-DF | MA-L | AltoBeam Inc. | CN |
| C0-8A-60 | MA-L | AltoBeam Inc. | CN |
| C4-58-78 | MA-L | AltoBeam Inc. | CN |
| D0-A6-51 | MA-L | AltoBeam Inc. | CN |
| D8-3A-36 | MA-L | AltoBeam Inc. | CN |
| D8-3E-EB | MA-L | AltoBeam Inc. | CN |
| E0-22-A1 | MA-L | AltoBeam Inc. | CN |
| E0-D3-F0 | MA-L | AltoBeam Inc. | CN |
| E8-2D-79 | MA-L | AltoBeam Inc. | CN |
| E8-F4-94 | MA-L | AltoBeam Inc. | CN |
| F4-1C-26 | MA-L | AltoBeam Inc. | CN |
| F4-B1-9C | MA-L | AltoBeam Inc. | CN |
| F4-E2-5D | MA-L | AltoBeam Inc. | CN |
| FC-FD-71 | MA-L | AltoBeam Inc. | CN |