Which company owns MAC address prefix 64:C6:67?

MAC address prefix 64:C6:67 is registered to Barnes&Noble in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 64:C6:67 has a network interface built by Barnes&Noble.

What is the OUI 64:C6:67?

64:C6:67 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Barnes&Noble. It covers every address from 64:C6:67:00:00:00 to 64:C6:67:FF:FF:FF, or 16,777,216 addresses in total. It is also written 64-C6-67.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 64:C6:67:00:00:00 that is 64:C6:67 — 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 Barnes&Noble located?

Barnes&Noble is listed at 400 Hamilton Avenue Palo Alto CA US 94301 in the IEEE OUI registry entry for 64:C6:67. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Barnes&Noble own?

Barnes&Noble holds 2 OUI prefixes in the IEEE registry, of which 64:C6:67 is one. A device made by Barnes&Noble could carry a MAC address from any of them.

Barnes&Noble

MAC address prefix 64:C6:67 is registered to Barnes&Noble in the IEEE OUI registry. Any device whose MAC address begins with 64:C6:67 has a network interface built by Barnes&Noble. 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 64:C6:67:00:00:00 to 64:C6:67:FF:FF:FF.

OUI prefix: 64:C6:67
Hyphen form: 64-C6-67
MAC range: 64:C6:67:00:00:00 – 64:C6:67:FF:FF:FF
Addresses in block: 16,777,216
Organization: Barnes&Noble
Address: 400 Hamilton Avenue Palo Alto CA US 94301
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 Barnes&Noble

Barnes&Noble holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

58:67:1A

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 "Barnes&Noble"
archived source →
2026-07-17Assigned to "Barnes&Noble"

Nearby in the registry

The prefixes assigned immediately before and after 64:C6:67:

FAQ

Which company owns MAC address prefix 64:C6:67?: MAC address prefix 64:C6:67 is registered to Barnes&Noble in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 64:C6:67 has a network interface built by Barnes&Noble.
What is the OUI 64:C6:67?: 64:C6:67 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Barnes&Noble. It covers every address from 64:C6:67:00:00:00 to 64:C6:67:FF:FF:FF, or 16,777,216 addresses in total. It is also written 64-C6-67.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 64:C6:67:00:00:00 that is 64:C6:67 — 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 Barnes&Noble located?: Barnes&Noble is listed at 400 Hamilton Avenue Palo Alto CA US 94301 in the IEEE OUI registry entry for 64:C6:67. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Barnes&Noble own?: Barnes&Noble holds 2 OUI prefixes in the IEEE registry, of which 64:C6:67 is one. A device made by Barnes&Noble could carry a MAC address from any of them.