Which company owns MAC address prefix A8:70:A5?

MAC address prefix A8:70:A5 is registered to UniComm Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A8:70:A5 has a network interface built by UniComm Inc..

What is the OUI A8:70:A5?

A8:70:A5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UniComm Inc.. It covers every address from A8:70:A5:00:00:00 to A8:70:A5:FF:FF:FF, or 16,777,216 addresses in total. It is also written A8-70-A5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A8:70:A5:00:00:00 that is A8:70:A5 — 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 UniComm Inc. located?

UniComm Inc. is listed at 7F-7, No. 716, Chung-Cheng Road, Chung-Ho City Taipei Hsien TW 23500 in the IEEE OUI registry entry for A8:70:A5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

UniComm Inc.

MAC address prefix A8:70:A5 is registered to UniComm Inc. in the IEEE OUI registry. Any device whose MAC address begins with A8:70:A5 has a network interface built by UniComm Inc.. 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 A8:70:A5:00:00:00 to A8:70:A5:FF:FF:FF.

OUI prefix: A8:70:A5
Hyphen form: A8-70-A5
MAC range: A8:70:A5:00:00:00 – A8:70:A5:FF:FF:FF
Addresses in block: 16,777,216
Organization: UniComm Inc.
Address: 7F-7, No. 716, Chung-Cheng Road, Chung-Ho City Taipei Hsien TW 23500
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 "UniComm Inc."
archived source →
2026-07-17Assigned to "UniComm Inc."

Nearby in the registry

The prefixes assigned immediately before and after A8:70:A5:

FAQ

Which company owns MAC address prefix A8:70:A5?: MAC address prefix A8:70:A5 is registered to UniComm Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A8:70:A5 has a network interface built by UniComm Inc..
What is the OUI A8:70:A5?: A8:70:A5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UniComm Inc.. It covers every address from A8:70:A5:00:00:00 to A8:70:A5:FF:FF:FF, or 16,777,216 addresses in total. It is also written A8-70-A5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A8:70:A5:00:00:00 that is A8:70:A5 — 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 UniComm Inc. located?: UniComm Inc. is listed at 7F-7, No. 716, Chung-Cheng Road, Chung-Ho City Taipei Hsien TW 23500 in the IEEE OUI registry entry for A8:70:A5. This is the address the organization registered with the IEEE, which may differ from its current operating address.