Which company owns MAC address prefix 08:08:EA?

MAC address prefix 08:08:EA is registered to AMSC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 08:08:EA has a network interface built by AMSC.

What is the OUI 08:08:EA?

08:08:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AMSC. It covers every address from 08:08:EA:00:00:00 to 08:08:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 08-08-EA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 08:08:EA:00:00:00 that is 08:08: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 AMSC located?

AMSC is listed at 15775 W Schaefer Court New Berlin WI US 53151 in the IEEE OUI registry entry for 08:08:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

AMSC

MAC address prefix 08:08:EA is registered to AMSC in the IEEE OUI registry. Any device whose MAC address begins with 08:08:EA has a network interface built by AMSC. 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 08:08:EA:00:00:00 to 08:08:EA:FF:FF:FF.

OUI prefix: 08:08:EA
Hyphen form: 08-08-EA
MAC range: 08:08:EA:00:00:00 – 08:08:EA:FF:FF:FF
Addresses in block: 16,777,216
Organization: AMSC
Address: 15775 W Schaefer Court New Berlin WI US 53151
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 "AMSC"
archived source →
2026-07-17Assigned to "AMSC"

Nearby in the registry

The prefixes assigned immediately before and after 08:08:EA:

FAQ

Which company owns MAC address prefix 08:08:EA?: MAC address prefix 08:08:EA is registered to AMSC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 08:08:EA has a network interface built by AMSC.
What is the OUI 08:08:EA?: 08:08:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AMSC. It covers every address from 08:08:EA:00:00:00 to 08:08:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 08-08-EA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 08:08:EA:00:00:00 that is 08:08: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 AMSC located?: AMSC is listed at 15775 W Schaefer Court New Berlin WI US 53151 in the IEEE OUI registry entry for 08:08:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.