Which company owns MAC address prefix 00:34:A1?

MAC address prefix 00:34:A1 is registered to RF-LAMBDA USA INC. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:34:A1 has a network interface built by RF-LAMBDA USA INC..

What is the OUI 00:34:A1?

00:34:A1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RF-LAMBDA USA INC.. It covers every address from 00:34:A1:00:00:00 to 00:34:A1:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-34-A1.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:34:A1:00:00:00 that is 00:34:A1 — 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 RF-LAMBDA USA INC. located?

RF-LAMBDA USA INC. is listed at 9115 Brown Deer Road | San Diego CA US 92121 in the IEEE OUI registry entry for 00:34:A1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

RF-LAMBDA USA INC.

MAC address prefix 00:34:A1 is registered to RF-LAMBDA USA INC. in the IEEE OUI registry. Any device whose MAC address begins with 00:34:A1 has a network interface built by RF-LAMBDA USA INC.. 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 00:34:A1:00:00:00 to 00:34:A1:FF:FF:FF.

OUI prefix: 00:34:A1
Hyphen form: 00-34-A1
MAC range: 00:34:A1:00:00:00 – 00:34:A1:FF:FF:FF
Addresses in block: 16,777,216
Organization: RF-LAMBDA USA INC.
Address: 9115 Brown Deer Road | San Diego CA US 92121
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.

2020-11-28Assigned to "RF-LAMBDA USA INC."
archived source →
2026-07-17Assigned to "RF-LAMBDA USA INC."

Nearby in the registry

The prefixes assigned immediately before and after 00:34:A1:

FAQ

Which company owns MAC address prefix 00:34:A1?: MAC address prefix 00:34:A1 is registered to RF-LAMBDA USA INC. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:34:A1 has a network interface built by RF-LAMBDA USA INC..
What is the OUI 00:34:A1?: 00:34:A1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RF-LAMBDA USA INC.. It covers every address from 00:34:A1:00:00:00 to 00:34:A1:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-34-A1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:34:A1:00:00:00 that is 00:34:A1 — 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 RF-LAMBDA USA INC. located?: RF-LAMBDA USA INC. is listed at 9115 Brown Deer Road | San Diego CA US 92121 in the IEEE OUI registry entry for 00:34:A1. This is the address the organization registered with the IEEE, which may differ from its current operating address.