Which company owns MAC address prefix B8:3A:7B?

MAC address prefix B8:3A:7B is registered to Worldplay (Canada) Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:3A:7B has a network interface built by Worldplay (Canada) Inc..

What is the OUI B8:3A:7B?

B8:3A:7B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Worldplay (Canada) Inc.. It covers every address from B8:3A:7B:00:00:00 to B8:3A:7B:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-3A-7B.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B8:3A:7B:00:00:00 that is B8:3A:7B — 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 Worldplay (Canada) Inc. located?

Worldplay (Canada) Inc. is listed at 803 - 24th Ave SE, Unit 200 Calgary Alberta CA T2G 1P5 in the IEEE OUI registry entry for B8:3A:7B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Worldplay (Canada) Inc.

MAC address prefix B8:3A:7B is registered to Worldplay (Canada) Inc. in the IEEE OUI registry. Any device whose MAC address begins with B8:3A:7B has a network interface built by Worldplay (Canada) 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 B8:3A:7B:00:00:00 to B8:3A:7B:FF:FF:FF.

OUI prefix: B8:3A:7B
Hyphen form: B8-3A-7B
MAC range: B8:3A:7B:00:00:00 – B8:3A:7B:FF:FF:FF
Addresses in block: 16,777,216
Organization: Worldplay (Canada) Inc.
Address: 803 - 24th Ave SE, Unit 200 Calgary Alberta CA T2G 1P5
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 "Worldplay (Canada) Inc."
archived source →
2026-07-17Assigned to "Worldplay (Canada) Inc."

Nearby in the registry

The prefixes assigned immediately before and after B8:3A:7B:

FAQ

Which company owns MAC address prefix B8:3A:7B?: MAC address prefix B8:3A:7B is registered to Worldplay (Canada) Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:3A:7B has a network interface built by Worldplay (Canada) Inc..
What is the OUI B8:3A:7B?: B8:3A:7B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Worldplay (Canada) Inc.. It covers every address from B8:3A:7B:00:00:00 to B8:3A:7B:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-3A-7B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B8:3A:7B:00:00:00 that is B8:3A:7B — 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 Worldplay (Canada) Inc. located?: Worldplay (Canada) Inc. is listed at 803 - 24th Ave SE, Unit 200 Calgary Alberta CA T2G 1P5 in the IEEE OUI registry entry for B8:3A:7B. This is the address the organization registered with the IEEE, which may differ from its current operating address.