Which company owns MAC address prefix A0:98:05?

MAC address prefix A0:98:05 is registered to OpenVox Communication Co Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:98:05 has a network interface built by OpenVox Communication Co Ltd.

What is the OUI A0:98:05?

A0:98:05 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OpenVox Communication Co Ltd. It covers every address from A0:98:05:00:00:00 to A0:98:05:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-98-05.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:98:05:00:00:00 that is A0:98:05 — 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 OpenVox Communication Co Ltd located?

OpenVox Communication Co Ltd is listed at F2,Building No.14,Shangsha Science & ShenZhen GuangDong CN 518031 in the IEEE OUI registry entry for A0:98:05. This is the address the organization registered with the IEEE, which may differ from its current operating address.

OpenVox Communication Co Ltd

MAC address prefix A0:98:05 is registered to OpenVox Communication Co Ltd in the IEEE OUI registry. Any device whose MAC address begins with A0:98:05 has a network interface built by OpenVox Communication Co 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 A0:98:05:00:00:00 to A0:98:05:FF:FF:FF.

OUI prefix: A0:98:05
Hyphen form: A0-98-05
MAC range: A0:98:05:00:00:00 – A0:98:05:FF:FF:FF
Addresses in block: 16,777,216
Organization: OpenVox Communication Co Ltd
Address: F2,Building No.14,Shangsha Science & ShenZhen GuangDong CN 518031
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 "OpenVox Communication Co Ltd"
archived source →
2026-07-17Assigned to "OpenVox Communication Co Ltd"

Nearby in the registry

The prefixes assigned immediately before and after A0:98:05:

FAQ

Which company owns MAC address prefix A0:98:05?: MAC address prefix A0:98:05 is registered to OpenVox Communication Co Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:98:05 has a network interface built by OpenVox Communication Co Ltd.
What is the OUI A0:98:05?: A0:98:05 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OpenVox Communication Co Ltd. It covers every address from A0:98:05:00:00:00 to A0:98:05:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-98-05.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:98:05:00:00:00 that is A0:98:05 — 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 OpenVox Communication Co Ltd located?: OpenVox Communication Co Ltd is listed at F2,Building No.14,Shangsha Science & ShenZhen GuangDong CN 518031 in the IEEE OUI registry entry for A0:98:05. This is the address the organization registered with the IEEE, which may differ from its current operating address.