Which company owns MAC address prefix A8:E5:52?

MAC address prefix A8:E5:52 is registered to JUWEL Aquarium AG & Co. KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A8:E5:52 has a network interface built by JUWEL Aquarium AG & Co. KG.

What is the OUI A8:E5:52?

A8:E5:52 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JUWEL Aquarium AG & Co. KG. It covers every address from A8:E5:52:00:00:00 to A8:E5:52:FF:FF:FF, or 16,777,216 addresses in total. It is also written A8-E5-52.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A8:E5:52:00:00:00 that is A8:E5:52 — 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 JUWEL Aquarium AG & Co. KG located?

JUWEL Aquarium AG & Co. KG is listed at Karl-Göx-Straße 1 Rotenburg / Wümme DE 27356 in the IEEE OUI registry entry for A8:E5:52. This is the address the organization registered with the IEEE, which may differ from its current operating address.

JUWEL Aquarium AG & Co. KG

MAC address prefix A8:E5:52 is registered to JUWEL Aquarium AG & Co. KG in the IEEE OUI registry. Any device whose MAC address begins with A8:E5:52 has a network interface built by JUWEL Aquarium AG & Co. KG. 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 A8:E5:52:00:00:00 to A8:E5:52:FF:FF:FF.

OUI prefix: A8:E5:52
Hyphen form: A8-E5-52
MAC range: A8:E5:52:00:00:00 – A8:E5:52:FF:FF:FF
Addresses in block: 16,777,216
Organization: JUWEL Aquarium AG & Co. KG
Address: Karl-Göx-Straße 1 Rotenburg / Wümme DE 27356
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.

2018-12-21Assigned to "JUWEL Aquarium AG & Co. KG"
archived source →
2026-07-17Assigned to "JUWEL Aquarium AG & Co. KG"

Nearby in the registry

The prefixes assigned immediately before and after A8:E5:52:

FAQ

Which company owns MAC address prefix A8:E5:52?: MAC address prefix A8:E5:52 is registered to JUWEL Aquarium AG & Co. KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A8:E5:52 has a network interface built by JUWEL Aquarium AG & Co. KG.
What is the OUI A8:E5:52?: A8:E5:52 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JUWEL Aquarium AG & Co. KG. It covers every address from A8:E5:52:00:00:00 to A8:E5:52:FF:FF:FF, or 16,777,216 addresses in total. It is also written A8-E5-52.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A8:E5:52:00:00:00 that is A8:E5:52 — 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 JUWEL Aquarium AG & Co. KG located?: JUWEL Aquarium AG & Co. KG is listed at Karl-Göx-Straße 1 Rotenburg / Wümme DE 27356 in the IEEE OUI registry entry for A8:E5:52. This is the address the organization registered with the IEEE, which may differ from its current operating address.