Which company owns MAC address prefix B4:DD:D0?

MAC address prefix B4:DD:D0 is registered to AUMOVIO Hungary Kft. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:DD:D0 has a network interface built by AUMOVIO Hungary Kft..

What is the OUI B4:DD:D0?

B4:DD:D0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AUMOVIO Hungary Kft.. It covers every address from B4:DD:D0:00:00:00 to B4:DD:D0:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-DD-D0.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:DD:D0:00:00:00 that is B4:DD:D0 — 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 AUMOVIO Hungary Kft. located?

AUMOVIO Hungary Kft. is listed at Napmátka u. 6. Budapest Pest HU H-1106 in the IEEE OUI registry entry for B4:DD:D0. This is the address the organization registered with the IEEE, which may differ from its current operating address.

AUMOVIO Hungary Kft.

MAC address prefix B4:DD:D0 is registered to AUMOVIO Hungary Kft. in the IEEE OUI registry. Any device whose MAC address begins with B4:DD:D0 has a network interface built by AUMOVIO Hungary Kft.. 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 B4:DD:D0:00:00:00 to B4:DD:D0:FF:FF:FF.

OUI prefix: B4:DD:D0
Hyphen form: B4-DD-D0
MAC range: B4:DD:D0:00:00:00 – B4:DD:D0:FF:FF:FF
Addresses in block: 16,777,216
Organization: AUMOVIO Hungary Kft.
Address: Napmátka u. 6. Budapest Pest HU H-1106
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 (3)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2018-12-21Assigned to "Continental Automotive Hungary Kft"
archived source →
2026-01-08Renamed from "Continental Automotive Hungary Kft" to "AUMOVIO Hungary Kft."
archived source →
2026-07-17Assigned to "AUMOVIO Hungary Kft."

Nearby in the registry

The prefixes assigned immediately before and after B4:DD:D0:

FAQ

Which company owns MAC address prefix B4:DD:D0?: MAC address prefix B4:DD:D0 is registered to AUMOVIO Hungary Kft. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:DD:D0 has a network interface built by AUMOVIO Hungary Kft..
What is the OUI B4:DD:D0?: B4:DD:D0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AUMOVIO Hungary Kft.. It covers every address from B4:DD:D0:00:00:00 to B4:DD:D0:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-DD-D0.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:DD:D0:00:00:00 that is B4:DD:D0 — 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 AUMOVIO Hungary Kft. located?: AUMOVIO Hungary Kft. is listed at Napmátka u. 6. Budapest Pest HU H-1106 in the IEEE OUI registry entry for B4:DD:D0. This is the address the organization registered with the IEEE, which may differ from its current operating address.