Which company owns MAC address prefix EC:F3:7A?

MAC address prefix EC:F3:7A is registered to Forecr OU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:F3:7A has a network interface built by Forecr OU.

What is the OUI EC:F3:7A?

EC:F3:7A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Forecr OU. It covers every address from EC:F3:7A:00:00:00 to EC:F3:7A:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-F3-7A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:F3:7A:00:00:00 that is EC:F3:7A — 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 Forecr OU located?

Forecr OU is listed at Sakala 7-2 Tallinn EE 10141 in the IEEE OUI registry entry for EC:F3:7A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Forecr OU

MAC address prefix EC:F3:7A is registered to Forecr OU in the IEEE OUI registry. Any device whose MAC address begins with EC:F3:7A has a network interface built by Forecr OU. 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:F3:7A:00:00:00 to EC:F3:7A:FF:FF:FF.

OUI prefix: EC:F3:7A
Hyphen form: EC-F3-7A
MAC range: EC:F3:7A:00:00:00 – EC:F3:7A:FF:FF:FF
Addresses in block: 16,777,216
Organization: Forecr OU
Address: Sakala 7-2 Tallinn EE 10141
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.

2025-05-13Assigned to "Forecr OU"
archived source →
2026-07-17Assigned to "Forecr OU"

Nearby in the registry

The prefixes assigned immediately before and after EC:F3:7A:

FAQ

Which company owns MAC address prefix EC:F3:7A?: MAC address prefix EC:F3:7A is registered to Forecr OU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:F3:7A has a network interface built by Forecr OU.
What is the OUI EC:F3:7A?: EC:F3:7A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Forecr OU. It covers every address from EC:F3:7A:00:00:00 to EC:F3:7A:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-F3-7A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:F3:7A:00:00:00 that is EC:F3:7A — 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 Forecr OU located?: Forecr OU is listed at Sakala 7-2 Tallinn EE 10141 in the IEEE OUI registry entry for EC:F3:7A. This is the address the organization registered with the IEEE, which may differ from its current operating address.