Which company owns MAC address prefix 44:22:BE?

MAC address prefix 44:22:BE is registered to rescuetrack GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:22:BE has a network interface built by rescuetrack GmbH.

What is the OUI 44:22:BE?

44:22:BE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to rescuetrack GmbH. It covers every address from 44:22:BE:00:00:00 to 44:22:BE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-22-BE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 44:22:BE:00:00:00 that is 44:22:BE — 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 rescuetrack GmbH located?

rescuetrack GmbH is listed at Gerhard-Kindler-Str. 17 Reutlingen Baden-Wuerttemberg DE 72770 in the IEEE OUI registry entry for 44:22:BE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

rescuetrack GmbH

MAC address prefix 44:22:BE is registered to rescuetrack GmbH in the IEEE OUI registry. Any device whose MAC address begins with 44:22:BE has a network interface built by rescuetrack GmbH. 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 44:22:BE:00:00:00 to 44:22:BE:FF:FF:FF.

OUI prefix: 44:22:BE
Hyphen form: 44-22-BE
MAC range: 44:22:BE:00:00:00 – 44:22:BE:FF:FF:FF
Addresses in block: 16,777,216
Organization: rescuetrack GmbH
Address: Gerhard-Kindler-Str. 17 Reutlingen Baden-Wuerttemberg DE 72770
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 (1)

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

2026-08-13Assigned to "rescuetrack GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 44:22:BE:

FAQ

Which company owns MAC address prefix 44:22:BE?: MAC address prefix 44:22:BE is registered to rescuetrack GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:22:BE has a network interface built by rescuetrack GmbH.
What is the OUI 44:22:BE?: 44:22:BE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to rescuetrack GmbH. It covers every address from 44:22:BE:00:00:00 to 44:22:BE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-22-BE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 44:22:BE:00:00:00 that is 44:22:BE — 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 rescuetrack GmbH located?: rescuetrack GmbH is listed at Gerhard-Kindler-Str. 17 Reutlingen Baden-Wuerttemberg DE 72770 in the IEEE OUI registry entry for 44:22:BE. This is the address the organization registered with the IEEE, which may differ from its current operating address.