Which company owns MAC address prefix 70:2F:4B?

MAC address prefix 70:2F:4B is registered to Steelcase Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:2F:4B has a network interface built by Steelcase Inc..

What is the OUI 70:2F:4B?

70:2F:4B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Steelcase Inc.. It covers every address from 70:2F:4B:00:00:00 to 70:2F:4B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-2F-4B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 70:2F:4B:00:00:00 that is 70:2F:4B — 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 Steelcase Inc. located?

Steelcase Inc. is listed at 901 44th Street SE Grand Rapids MI US 49508-7594 in the IEEE OUI registry entry for 70:2F:4B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Steelcase Inc.

MAC address prefix 70:2F:4B is registered to Steelcase Inc. in the IEEE OUI registry. Any device whose MAC address begins with 70:2F:4B has a network interface built by Steelcase 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 70:2F:4B:00:00:00 to 70:2F:4B:FF:FF:FF.

OUI prefix: 70:2F:4B
Hyphen form: 70-2F-4B
MAC range: 70:2F:4B:00:00:00 – 70:2F:4B:FF:FF:FF
Addresses in block: 16,777,216
Organization: Steelcase Inc.
Address: 901 44th Street SE Grand Rapids MI US 49508-7594
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 (3)

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 "PolyVision Inc."
archived source →
2020-08-05Renamed from "PolyVision Inc." to "Steelcase Inc."
archived source →
2026-07-17Assigned to "Steelcase Inc."

Nearby in the registry

The prefixes assigned immediately before and after 70:2F:4B:

FAQ

Which company owns MAC address prefix 70:2F:4B?: MAC address prefix 70:2F:4B is registered to Steelcase Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:2F:4B has a network interface built by Steelcase Inc..
What is the OUI 70:2F:4B?: 70:2F:4B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Steelcase Inc.. It covers every address from 70:2F:4B:00:00:00 to 70:2F:4B:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-2F-4B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 70:2F:4B:00:00:00 that is 70:2F:4B — 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 Steelcase Inc. located?: Steelcase Inc. is listed at 901 44th Street SE Grand Rapids MI US 49508-7594 in the IEEE OUI registry entry for 70:2F:4B. This is the address the organization registered with the IEEE, which may differ from its current operating address.