Which company owns MAC address prefix 38:4B:76?

MAC address prefix 38:4B:76 is registered to AIRTAME ApS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:4B:76 has a network interface built by AIRTAME ApS.

What is the OUI 38:4B:76?

38:4B:76 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AIRTAME ApS. It covers every address from 38:4B:76:00:00:00 to 38:4B:76:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-4B-76.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 38:4B:76:00:00:00 that is 38:4B:76 — 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 AIRTAME ApS located?

AIRTAME ApS is listed at Vestergade 20C Copenhagen C Copenhagen DK 1456 in the IEEE OUI registry entry for 38:4B:76. This is the address the organization registered with the IEEE, which may differ from its current operating address.

AIRTAME ApS

MAC address prefix 38:4B:76 is registered to AIRTAME ApS in the IEEE OUI registry. Any device whose MAC address begins with 38:4B:76 has a network interface built by AIRTAME ApS. 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 38:4B:76:00:00:00 to 38:4B:76:FF:FF:FF.

OUI prefix: 38:4B:76
Hyphen form: 38-4B-76
MAC range: 38:4B:76:00:00:00 – 38:4B:76:FF:FF:FF
Addresses in block: 16,777,216
Organization: AIRTAME ApS
Address: Vestergade 20C Copenhagen C Copenhagen DK 1456
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 "AIRTAME ApS"
archived source →
2026-07-17Assigned to "AIRTAME ApS"

Nearby in the registry

The prefixes assigned immediately before and after 38:4B:76:

FAQ

Which company owns MAC address prefix 38:4B:76?: MAC address prefix 38:4B:76 is registered to AIRTAME ApS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:4B:76 has a network interface built by AIRTAME ApS.
What is the OUI 38:4B:76?: 38:4B:76 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AIRTAME ApS. It covers every address from 38:4B:76:00:00:00 to 38:4B:76:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-4B-76.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 38:4B:76:00:00:00 that is 38:4B:76 — 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 AIRTAME ApS located?: AIRTAME ApS is listed at Vestergade 20C Copenhagen C Copenhagen DK 1456 in the IEEE OUI registry entry for 38:4B:76. This is the address the organization registered with the IEEE, which may differ from its current operating address.