Which company owns MAC address prefix B4:D8:A9?

MAC address prefix B4:D8:A9 is registered to BetterBots in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:D8:A9 has a network interface built by BetterBots.

What is the OUI B4:D8:A9?

B4:D8:A9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BetterBots. It covers every address from B4:D8:A9:00:00:00 to B4:D8:A9:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-D8-A9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:D8:A9:00:00:00 that is B4:D8:A9 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is BetterBots located?

BetterBots is listed at 1600 Wilson Way SE, Ste. 9 Smyrna GA US 30082 in the IEEE OUI registry entry for B4:D8:A9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BetterBots

MAC address prefix B4:D8:A9 is registered to BetterBots in the IEEE OUI registry. Any device whose MAC address begins with B4:D8:A9 has a network interface built by BetterBots. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from B4:D8:A9:00:00:00 to B4:D8:A9:FF:FF:FF.

OUI prefix: B4:D8:A9
Hyphen form: B4-D8-A9
MAC range: B4:D8:A9:00:00:00 – B4:D8:A9:FF:FF:FF
Addresses in block: 16,777,216
Organization: BetterBots
Address: 1600 Wilson Way SE, Ste. 9 Smyrna GA US 30082
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2016-07-29Assigned to "BetterBots"
archived source →
2026-07-17Assigned to "BetterBots"

Nearby in the registry

The prefixes assigned immediately before and after B4:D8:A9:

FAQ

Which company owns MAC address prefix B4:D8:A9?: MAC address prefix B4:D8:A9 is registered to BetterBots in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:D8:A9 has a network interface built by BetterBots.
What is the OUI B4:D8:A9?: B4:D8:A9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BetterBots. It covers every address from B4:D8:A9:00:00:00 to B4:D8:A9:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-D8-A9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:D8:A9:00:00:00 that is B4:D8:A9 — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is BetterBots located?: BetterBots is listed at 1600 Wilson Way SE, Ste. 9 Smyrna GA US 30082 in the IEEE OUI registry entry for B4:D8:A9. This is the address the organization registered with the IEEE, which may differ from its current operating address.