Which company owns MAC address prefix A0:52:AB?

MAC address prefix A0:52:AB is registered to AVM ELECTRONICS PTE LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:52:AB has a network interface built by AVM ELECTRONICS PTE LTD.

What is the OUI A0:52:AB?

A0:52:AB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AVM ELECTRONICS PTE LTD. It covers every address from A0:52:AB:00:00:00 to A0:52:AB:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-52-AB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:52:AB:00:00:00 that is A0:52:AB — 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 AVM ELECTRONICS PTE LTD located?

AVM ELECTRONICS PTE LTD is listed at 362, UPPER PAYA LEBAR ROAD, #05-07 Da Jin Factory Building Singapore Singapore SG 534963 in the IEEE OUI registry entry for A0:52:AB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

AVM ELECTRONICS PTE LTD

MAC address prefix A0:52:AB is registered to AVM ELECTRONICS PTE LTD in the IEEE OUI registry. Any device whose MAC address begins with A0:52:AB has a network interface built by AVM ELECTRONICS PTE LTD. 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 A0:52:AB:00:00:00 to A0:52:AB:FF:FF:FF.

OUI prefix: A0:52:AB
Hyphen form: A0-52-AB
MAC range: A0:52:AB:00:00:00 – A0:52:AB:FF:FF:FF
Addresses in block: 16,777,216
Organization: AVM ELECTRONICS PTE LTD
Address: 362, UPPER PAYA LEBAR ROAD, #05-07 Da Jin Factory Building Singapore Singapore SG 534963
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.

2024-02-15Assigned to "AVM ELECTRONICS PTE LTD"
archived source →
2026-07-17Assigned to "AVM ELECTRONICS PTE LTD"

Nearby in the registry

The prefixes assigned immediately before and after A0:52:AB:

FAQ

Which company owns MAC address prefix A0:52:AB?: MAC address prefix A0:52:AB is registered to AVM ELECTRONICS PTE LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:52:AB has a network interface built by AVM ELECTRONICS PTE LTD.
What is the OUI A0:52:AB?: A0:52:AB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AVM ELECTRONICS PTE LTD. It covers every address from A0:52:AB:00:00:00 to A0:52:AB:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-52-AB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:52:AB:00:00:00 that is A0:52:AB — 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 AVM ELECTRONICS PTE LTD located?: AVM ELECTRONICS PTE LTD is listed at 362, UPPER PAYA LEBAR ROAD, #05-07 Da Jin Factory Building Singapore Singapore SG 534963 in the IEEE OUI registry entry for A0:52:AB. This is the address the organization registered with the IEEE, which may differ from its current operating address.