Which company owns MAC address prefix EC:B1:06?

MAC address prefix EC:B1:06 is registered to Acuro Networks, Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:B1:06 has a network interface built by Acuro Networks, Inc.

What is the OUI EC:B1:06?

EC:B1:06 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Acuro Networks, Inc. It covers every address from EC:B1:06:00:00:00 to EC:B1:06:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-B1-06.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:B1:06:00:00:00 that is EC:B1:06 — 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 Acuro Networks, Inc located?

Acuro Networks, Inc is listed at 42808 Christy St., Suite 100 Fremont CA US 94538 in the IEEE OUI registry entry for EC:B1:06. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Acuro Networks, Inc

MAC address prefix EC:B1:06 is registered to Acuro Networks, Inc in the IEEE OUI registry. Any device whose MAC address begins with EC:B1:06 has a network interface built by Acuro Networks, 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 EC:B1:06:00:00:00 to EC:B1:06:FF:FF:FF.

OUI prefix: EC:B1:06
Hyphen form: EC-B1-06
MAC range: EC:B1:06:00:00:00 – EC:B1:06:FF:FF:FF
Addresses in block: 16,777,216
Organization: Acuro Networks, Inc
Address: 42808 Christy St., Suite 100 Fremont CA US 94538
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 "Acuro Networks, Inc"
archived source →
2026-07-17Assigned to "Acuro Networks, Inc"

Nearby in the registry

The prefixes assigned immediately before and after EC:B1:06:

FAQ

Which company owns MAC address prefix EC:B1:06?: MAC address prefix EC:B1:06 is registered to Acuro Networks, Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:B1:06 has a network interface built by Acuro Networks, Inc.
What is the OUI EC:B1:06?: EC:B1:06 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Acuro Networks, Inc. It covers every address from EC:B1:06:00:00:00 to EC:B1:06:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-B1-06.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:B1:06:00:00:00 that is EC:B1:06 — 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 Acuro Networks, Inc located?: Acuro Networks, Inc is listed at 42808 Christy St., Suite 100 Fremont CA US 94538 in the IEEE OUI registry entry for EC:B1:06. This is the address the organization registered with the IEEE, which may differ from its current operating address.