Which company owns MAC address prefix A0:75:EA?

MAC address prefix A0:75:EA is registered to BoxLock, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:75:EA has a network interface built by BoxLock, Inc..

What is the OUI A0:75:EA?

A0:75:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BoxLock, Inc.. It covers every address from A0:75:EA:00:00:00 to A0:75:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-75-EA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:75:EA:00:00:00 that is A0:75:EA — 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 BoxLock, Inc. located?

BoxLock, Inc. is listed at 931 Monroe Dr Ste A 102-405 Atlanta GA US 30308 in the IEEE OUI registry entry for A0:75:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BoxLock, Inc.

MAC address prefix A0:75:EA is registered to BoxLock, Inc. in the IEEE OUI registry. Any device whose MAC address begins with A0:75:EA has a network interface built by BoxLock, 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 A0:75:EA:00:00:00 to A0:75:EA:FF:FF:FF.

OUI prefix: A0:75:EA
Hyphen form: A0-75-EA
MAC range: A0:75:EA:00:00:00 – A0:75:EA:FF:FF:FF
Addresses in block: 16,777,216
Organization: BoxLock, Inc.
Address: 931 Monroe Dr Ste A 102-405 Atlanta GA US 30308
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.

2018-12-21Assigned to "BoxLock, Inc."
archived source →
2026-07-17Assigned to "BoxLock, Inc."

Nearby in the registry

The prefixes assigned immediately before and after A0:75:EA:

FAQ

Which company owns MAC address prefix A0:75:EA?: MAC address prefix A0:75:EA is registered to BoxLock, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:75:EA has a network interface built by BoxLock, Inc..
What is the OUI A0:75:EA?: A0:75:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BoxLock, Inc.. It covers every address from A0:75:EA:00:00:00 to A0:75:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-75-EA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:75:EA:00:00:00 that is A0:75:EA — 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 BoxLock, Inc. located?: BoxLock, Inc. is listed at 931 Monroe Dr Ste A 102-405 Atlanta GA US 30308 in the IEEE OUI registry entry for A0:75:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.