Which company owns MAC address prefix 84:D3:2A?

MAC address prefix 84:D3:2A is registered to IEEE 1905.1 in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:D3:2A has a network interface built by IEEE 1905.1.

What is the OUI 84:D3:2A?

84:D3:2A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IEEE 1905.1. It covers every address from 84:D3:2A:00:00:00 to 84:D3:2A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-D3-2A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:D3:2A:00:00:00 that is 84:D3:2A — 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 IEEE 1905.1 located?

IEEE 1905.1 is listed at 445 Hoes Lane Piscataway NJ US 08855-1331 in the IEEE OUI registry entry for 84:D3:2A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

IEEE 1905.1

MAC address prefix 84:D3:2A is registered to IEEE 1905.1 in the IEEE OUI registry. Any device whose MAC address begins with 84:D3:2A has a network interface built by IEEE 1905.1. 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 84:D3:2A:00:00:00 to 84:D3:2A:FF:FF:FF.

OUI prefix: 84:D3:2A
Hyphen form: 84-D3-2A
MAC range: 84:D3:2A:00:00:00 – 84:D3:2A:FF:FF:FF
Addresses in block: 16,777,216
Organization: IEEE 1905.1
Address: 445 Hoes Lane Piscataway NJ US 08855-1331
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 "IEEE 1905.1"
archived source →
2026-07-17Assigned to "IEEE 1905.1"

Nearby in the registry

The prefixes assigned immediately before and after 84:D3:2A:

FAQ

Which company owns MAC address prefix 84:D3:2A?: MAC address prefix 84:D3:2A is registered to IEEE 1905.1 in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:D3:2A has a network interface built by IEEE 1905.1.
What is the OUI 84:D3:2A?: 84:D3:2A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to IEEE 1905.1. It covers every address from 84:D3:2A:00:00:00 to 84:D3:2A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-D3-2A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:D3:2A:00:00:00 that is 84:D3:2A — 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 IEEE 1905.1 located?: IEEE 1905.1 is listed at 445 Hoes Lane Piscataway NJ US 08855-1331 in the IEEE OUI registry entry for 84:D3:2A. This is the address the organization registered with the IEEE, which may differ from its current operating address.