Which company owns MAC address prefix E4:67:BA?

MAC address prefix E4:67:BA is registered to Danish Interpretation Systems A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:67:BA has a network interface built by Danish Interpretation Systems A/S.

What is the OUI E4:67:BA?

E4:67:BA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Danish Interpretation Systems A/S. It covers every address from E4:67:BA:00:00:00 to E4:67:BA:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-67-BA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E4:67:BA:00:00:00 that is E4:67:BA — 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 Danish Interpretation Systems A/S located?

Danish Interpretation Systems A/S is listed at Vestre Teglgade 12 Copenhagen SV DK 2450 in the IEEE OUI registry entry for E4:67:BA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Danish Interpretation Systems A/S

MAC address prefix E4:67:BA is registered to Danish Interpretation Systems A/S in the IEEE OUI registry. Any device whose MAC address begins with E4:67:BA has a network interface built by Danish Interpretation Systems A/S. 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 E4:67:BA:00:00:00 to E4:67:BA:FF:FF:FF.

OUI prefix: E4:67:BA
Hyphen form: E4-67-BA
MAC range: E4:67:BA:00:00:00 – E4:67:BA:FF:FF:FF
Addresses in block: 16,777,216
Organization: Danish Interpretation Systems A/S
Address: Vestre Teglgade 12 Copenhagen SV DK 2450
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 "Danish Interpretation Systems A/S"
archived source →
2026-07-17Assigned to "Danish Interpretation Systems A/S"

Nearby in the registry

The prefixes assigned immediately before and after E4:67:BA:

FAQ

Which company owns MAC address prefix E4:67:BA?: MAC address prefix E4:67:BA is registered to Danish Interpretation Systems A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:67:BA has a network interface built by Danish Interpretation Systems A/S.
What is the OUI E4:67:BA?: E4:67:BA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Danish Interpretation Systems A/S. It covers every address from E4:67:BA:00:00:00 to E4:67:BA:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-67-BA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E4:67:BA:00:00:00 that is E4:67:BA — 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 Danish Interpretation Systems A/S located?: Danish Interpretation Systems A/S is listed at Vestre Teglgade 12 Copenhagen SV DK 2450 in the IEEE OUI registry entry for E4:67:BA. This is the address the organization registered with the IEEE, which may differ from its current operating address.