Which company owns MAC address prefix A0:F9:E0?

MAC address prefix A0:F9:E0 is registered to VIVATEL COMPANY LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:F9:E0 has a network interface built by VIVATEL COMPANY LIMITED.

What is the OUI A0:F9:E0?

A0:F9:E0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to VIVATEL COMPANY LIMITED. It covers every address from A0:F9:E0:00:00:00 to A0:F9:E0:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-F9-E0.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:F9:E0:00:00:00 that is A0:F9:E0 — 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 VIVATEL COMPANY LIMITED located?

VIVATEL COMPANY LIMITED is listed at 36/F,Tower Two Causeway Bay Causeway Bay HK 999077 in the IEEE OUI registry entry for A0:F9:E0. This is the address the organization registered with the IEEE, which may differ from its current operating address.

VIVATEL COMPANY LIMITED

MAC address prefix A0:F9:E0 is registered to VIVATEL COMPANY LIMITED in the IEEE OUI registry. Any device whose MAC address begins with A0:F9:E0 has a network interface built by VIVATEL COMPANY LIMITED. 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:F9:E0:00:00:00 to A0:F9:E0:FF:FF:FF.

OUI prefix: A0:F9:E0
Hyphen form: A0-F9-E0
MAC range: A0:F9:E0:00:00:00 – A0:F9:E0:FF:FF:FF
Addresses in block: 16,777,216
Organization: VIVATEL COMPANY LIMITED
Address: 36/F,Tower Two Causeway Bay Causeway Bay HK 999077
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 "VIVATEL COMPANY LIMITED"
archived source →
2026-07-17Assigned to "VIVATEL COMPANY LIMITED"

Nearby in the registry

The prefixes assigned immediately before and after A0:F9:E0:

FAQ

Which company owns MAC address prefix A0:F9:E0?: MAC address prefix A0:F9:E0 is registered to VIVATEL COMPANY LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:F9:E0 has a network interface built by VIVATEL COMPANY LIMITED.
What is the OUI A0:F9:E0?: A0:F9:E0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to VIVATEL COMPANY LIMITED. It covers every address from A0:F9:E0:00:00:00 to A0:F9:E0:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-F9-E0.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:F9:E0:00:00:00 that is A0:F9:E0 — 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 VIVATEL COMPANY LIMITED located?: VIVATEL COMPANY LIMITED is listed at 36/F,Tower Two Causeway Bay Causeway Bay HK 999077 in the IEEE OUI registry entry for A0:F9:E0. This is the address the organization registered with the IEEE, which may differ from its current operating address.