Which company owns MAC address prefix E4:82:FF?

MAC address prefix E4:82:FF is registered to Ecliptic Enterprises Corp in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:82:FF has a network interface built by Ecliptic Enterprises Corp.

What is the OUI E4:82:FF?

E4:82:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ecliptic Enterprises Corp. It covers every address from E4:82:FF:00:00:00 to E4:82:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-82-FF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E4:82:FF:00:00:00 that is E4:82:FF — 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 Ecliptic Enterprises Corp located?

Ecliptic Enterprises Corp is listed at 398 W Washington Blvd Ste 100 PASADENA CA US 91103 in the IEEE OUI registry entry for E4:82:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Ecliptic Enterprises Corp

MAC address prefix E4:82:FF is registered to Ecliptic Enterprises Corp in the IEEE OUI registry. Any device whose MAC address begins with E4:82:FF has a network interface built by Ecliptic Enterprises Corp. 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 E4:82:FF:00:00:00 to E4:82:FF:FF:FF:FF.

OUI prefix: E4:82:FF
Hyphen form: E4-82-FF
MAC range: E4:82:FF:00:00:00 – E4:82:FF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ecliptic Enterprises Corp
Address: 398 W Washington Blvd Ste 100 PASADENA CA US 91103
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.

2025-02-27Assigned to "Ecliptic Enterprises Corp"
archived source →
2026-07-17Assigned to "Ecliptic Enterprises Corp"

Nearby in the registry

The prefixes assigned immediately before and after E4:82:FF:

FAQ

Which company owns MAC address prefix E4:82:FF?: MAC address prefix E4:82:FF is registered to Ecliptic Enterprises Corp in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E4:82:FF has a network interface built by Ecliptic Enterprises Corp.
What is the OUI E4:82:FF?: E4:82:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ecliptic Enterprises Corp. It covers every address from E4:82:FF:00:00:00 to E4:82:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written E4-82-FF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E4:82:FF:00:00:00 that is E4:82:FF — 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 Ecliptic Enterprises Corp located?: Ecliptic Enterprises Corp is listed at 398 W Washington Blvd Ste 100 PASADENA CA US 91103 in the IEEE OUI registry entry for E4:82:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.