Which company owns MAC address prefix CC:6B:F1?

MAC address prefix CC:6B:F1 is registered to Sound Masking Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:6B:F1 has a network interface built by Sound Masking Inc..

What is the OUI CC:6B:F1?

CC:6B:F1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Sound Masking Inc.. It covers every address from CC:6B:F1:00:00:00 to CC:6B:F1:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-6B-F1.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:6B:F1:00:00:00 that is CC:6B:F1 — 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 Sound Masking Inc. located?

Sound Masking Inc. is listed at 47 - 23 - Glamis Drive Sw Calgary Alberta CA T3E 6S3 in the IEEE OUI registry entry for CC:6B:F1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Sound Masking Inc.

MAC address prefix CC:6B:F1 is registered to Sound Masking Inc. in the IEEE OUI registry. Any device whose MAC address begins with CC:6B:F1 has a network interface built by Sound Masking 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 CC:6B:F1:00:00:00 to CC:6B:F1:FF:FF:FF.

OUI prefix: CC:6B:F1
Hyphen form: CC-6B-F1
MAC range: CC:6B:F1:00:00:00 – CC:6B:F1:FF:FF:FF
Addresses in block: 16,777,216
Organization: Sound Masking Inc.
Address: 47 - 23 - Glamis Drive Sw Calgary Alberta CA T3E 6S3
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 "Sound Masking Inc."
archived source →
2026-07-17Assigned to "Sound Masking Inc."

Nearby in the registry

The prefixes assigned immediately before and after CC:6B:F1:

FAQ

Which company owns MAC address prefix CC:6B:F1?: MAC address prefix CC:6B:F1 is registered to Sound Masking Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:6B:F1 has a network interface built by Sound Masking Inc..
What is the OUI CC:6B:F1?: CC:6B:F1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Sound Masking Inc.. It covers every address from CC:6B:F1:00:00:00 to CC:6B:F1:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-6B-F1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:6B:F1:00:00:00 that is CC:6B:F1 — 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 Sound Masking Inc. located?: Sound Masking Inc. is listed at 47 - 23 - Glamis Drive Sw Calgary Alberta CA T3E 6S3 in the IEEE OUI registry entry for CC:6B:F1. This is the address the organization registered with the IEEE, which may differ from its current operating address.