Which company owns MAC address prefix 90:34:2B?

MAC address prefix 90:34:2B is registered to Gatekeeper Systems, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:34:2B has a network interface built by Gatekeeper Systems, Inc..

What is the OUI 90:34:2B?

90:34:2B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Gatekeeper Systems, Inc.. It covers every address from 90:34:2B:00:00:00 to 90:34:2B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-34-2B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:34:2B:00:00:00 that is 90:34:2B — 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 Gatekeeper Systems, Inc. located?

Gatekeeper Systems, Inc. is listed at 8 Studebaker Irvine CA US 92618 in the IEEE OUI registry entry for 90:34:2B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Gatekeeper Systems, Inc.

MAC address prefix 90:34:2B is registered to Gatekeeper Systems, Inc. in the IEEE OUI registry. Any device whose MAC address begins with 90:34:2B has a network interface built by Gatekeeper Systems, 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 90:34:2B:00:00:00 to 90:34:2B:FF:FF:FF.

OUI prefix: 90:34:2B
Hyphen form: 90-34-2B
MAC range: 90:34:2B:00:00:00 – 90:34:2B:FF:FF:FF
Addresses in block: 16,777,216
Organization: Gatekeeper Systems, Inc.
Address: 8 Studebaker Irvine CA US 92618
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 "Gatekeeper Systems, Inc."
archived source →
2026-07-17Assigned to "Gatekeeper Systems, Inc."

Nearby in the registry

The prefixes assigned immediately before and after 90:34:2B:

FAQ

Which company owns MAC address prefix 90:34:2B?: MAC address prefix 90:34:2B is registered to Gatekeeper Systems, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:34:2B has a network interface built by Gatekeeper Systems, Inc..
What is the OUI 90:34:2B?: 90:34:2B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Gatekeeper Systems, Inc.. It covers every address from 90:34:2B:00:00:00 to 90:34:2B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-34-2B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:34:2B:00:00:00 that is 90:34:2B — 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 Gatekeeper Systems, Inc. located?: Gatekeeper Systems, Inc. is listed at 8 Studebaker Irvine CA US 92618 in the IEEE OUI registry entry for 90:34:2B. This is the address the organization registered with the IEEE, which may differ from its current operating address.