Which company owns MAC address prefix AC:EA:70?

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

What is the OUI AC:EA:70?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:EA:70:00:00:00 that is AC:EA:70 — 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 ZUNDA Inc. located?

ZUNDA Inc. is listed at 3/F Kamon Bldg, Shibuya 2-6-11 Shibuya-ku Tokyo JP 150-0002 in the IEEE OUI registry entry for AC:EA:70. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ZUNDA Inc.

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

OUI prefix: AC:EA:70
Hyphen form: AC-EA-70
MAC range: AC:EA:70:00:00:00 – AC:EA:70:FF:FF:FF
Addresses in block: 16,777,216
Organization: ZUNDA Inc.
Address: 3/F Kamon Bldg, Shibuya 2-6-11 Shibuya-ku Tokyo JP 150-0002
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.

2026-01-08Assigned to "ZUNDA Inc."
archived source →
2026-07-17Assigned to "ZUNDA Inc."

Nearby in the registry

The prefixes assigned immediately before and after AC:EA:70:

FAQ

Which company owns MAC address prefix AC:EA:70?: MAC address prefix AC:EA:70 is registered to ZUNDA Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:EA:70 has a network interface built by ZUNDA Inc..
What is the OUI AC:EA:70?: AC:EA:70 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ZUNDA Inc.. It covers every address from AC:EA:70:00:00:00 to AC:EA:70:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-EA-70.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:EA:70:00:00:00 that is AC:EA:70 — 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 ZUNDA Inc. located?: ZUNDA Inc. is listed at 3/F Kamon Bldg, Shibuya 2-6-11 Shibuya-ku Tokyo JP 150-0002 in the IEEE OUI registry entry for AC:EA:70. This is the address the organization registered with the IEEE, which may differ from its current operating address.