Which company owns MAC address prefix 00:B0:09?

MAC address prefix 00:B0:09 is registered to Grass Valley, A Belden Brand in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:B0:09 has a network interface built by Grass Valley, A Belden Brand.

What is the OUI 00:B0:09?

00:B0:09 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grass Valley, A Belden Brand. It covers every address from 00:B0:09:00:00:00 to 00:B0:09:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-B0-09.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:B0:09:00:00:00 that is 00:B0:09 — 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 Grass Valley, A Belden Brand located?

Grass Valley, A Belden Brand is listed at 3499, Douglas B. Floreani Montreal Quebec CA H4S 2C6 in the IEEE OUI registry entry for 00:B0:09. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Grass Valley, A Belden Brand own?

Grass Valley, A Belden Brand holds 3 OUI prefixes in the IEEE registry, of which 00:B0:09 is one. A device made by Grass Valley, A Belden Brand could carry a MAC address from any of them.

Grass Valley, A Belden Brand

MAC address prefix 00:B0:09 is registered to Grass Valley, A Belden Brand in the IEEE OUI registry. Any device whose MAC address begins with 00:B0:09 has a network interface built by Grass Valley, A Belden Brand. 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:B0:09:00:00:00 to 00:B0:09:FF:FF:FF.

OUI prefix: 00:B0:09
Hyphen form: 00-B0-09
MAC range: 00:B0:09:00:00:00 – 00:B0:09:FF:FF:FF
Addresses in block: 16,777,216
Organization: Grass Valley, A Belden Brand
Address: 3499, Douglas B. Floreani Montreal Quebec CA H4S 2C6
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.

Other prefixes from Grass Valley, A Belden Brand

Grass Valley, A Belden Brand holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

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 "Grass Valley, A Belden Brand"
archived source →
2026-07-17Assigned to "Grass Valley, A Belden Brand"

Nearby in the registry

The prefixes assigned immediately before and after 00:B0:09:

FAQ

Which company owns MAC address prefix 00:B0:09?: MAC address prefix 00:B0:09 is registered to Grass Valley, A Belden Brand in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:B0:09 has a network interface built by Grass Valley, A Belden Brand.
What is the OUI 00:B0:09?: 00:B0:09 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Grass Valley, A Belden Brand. It covers every address from 00:B0:09:00:00:00 to 00:B0:09:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-B0-09.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:B0:09:00:00:00 that is 00:B0:09 — 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 Grass Valley, A Belden Brand located?: Grass Valley, A Belden Brand is listed at 3499, Douglas B. Floreani Montreal Quebec CA H4S 2C6 in the IEEE OUI registry entry for 00:B0:09. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Grass Valley, A Belden Brand own?: Grass Valley, A Belden Brand holds 3 OUI prefixes in the IEEE registry, of which 00:B0:09 is one. A device made by Grass Valley, A Belden Brand could carry a MAC address from any of them.