Which company owns MAC address prefix 68:1F:40?

MAC address prefix 68:1F:40 is registered to Blu Wireless Technology Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:1F:40 has a network interface built by Blu Wireless Technology Ltd.

What is the OUI 68:1F:40?

68:1F:40 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Blu Wireless Technology Ltd. It covers every address from 68:1F:40:00:00:00 to 68:1F:40:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-1F-40.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 68:1F:40:00:00:00 that is 68:1F:40 — 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 Blu Wireless Technology Ltd located?

Blu Wireless Technology Ltd is listed at Bluwireless Technology, 5th Floor, 1 Temple Way Bristol Bristol, City of GB BS2 0BY in the IEEE OUI registry entry for 68:1F:40. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Blu Wireless Technology Ltd

MAC address prefix 68:1F:40 is registered to Blu Wireless Technology Ltd in the IEEE OUI registry. Any device whose MAC address begins with 68:1F:40 has a network interface built by Blu Wireless Technology Ltd. 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 68:1F:40:00:00:00 to 68:1F:40:FF:FF:FF.

OUI prefix: 68:1F:40
Hyphen form: 68-1F-40
MAC range: 68:1F:40:00:00:00 – 68:1F:40:FF:FF:FF
Addresses in block: 16,777,216
Organization: Blu Wireless Technology Ltd
Address: Bluwireless Technology, 5th Floor, 1 Temple Way Bristol Bristol, City of GB BS2 0BY
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.

2017-09-08Assigned to "Blu Wireless Technology Ltd"
archived source →
2026-07-17Assigned to "Blu Wireless Technology Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 68:1F:40:

FAQ

Which company owns MAC address prefix 68:1F:40?: MAC address prefix 68:1F:40 is registered to Blu Wireless Technology Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:1F:40 has a network interface built by Blu Wireless Technology Ltd.
What is the OUI 68:1F:40?: 68:1F:40 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Blu Wireless Technology Ltd. It covers every address from 68:1F:40:00:00:00 to 68:1F:40:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-1F-40.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 68:1F:40:00:00:00 that is 68:1F:40 — 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 Blu Wireless Technology Ltd located?: Blu Wireless Technology Ltd is listed at Bluwireless Technology, 5th Floor, 1 Temple Way Bristol Bristol, City of GB BS2 0BY in the IEEE OUI registry entry for 68:1F:40. This is the address the organization registered with the IEEE, which may differ from its current operating address.