Which company owns MAC address prefix E0:E6:56?

MAC address prefix E0:E6:56 is registered to Nethesis srl in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:E6:56 has a network interface built by Nethesis srl.

What is the OUI E0:E6:56?

E0:E6:56 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nethesis srl. It covers every address from E0:E6:56:00:00:00 to E0:E6:56:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-E6-56.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E0:E6:56:00:00:00 that is E0:E6:56 — 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 Nethesis srl located?

Nethesis srl is listed at strada degli olmi 12 Pesaro Pesaro e Urbino IT 61122 in the IEEE OUI registry entry for E0:E6:56. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Nethesis srl

MAC address prefix E0:E6:56 is registered to Nethesis srl in the IEEE OUI registry. Any device whose MAC address begins with E0:E6:56 has a network interface built by Nethesis srl. 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 E0:E6:56:00:00:00 to E0:E6:56:FF:FF:FF.

OUI prefix: E0:E6:56
Hyphen form: E0-E6-56
MAC range: E0:E6:56:00:00:00 – E0:E6:56:FF:FF:FF
Addresses in block: 16,777,216
Organization: Nethesis srl
Address: strada degli olmi 12 Pesaro Pesaro e Urbino IT 61122
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.

2021-02-25Assigned to "Nethesis srl"
archived source →
2026-07-17Assigned to "Nethesis srl"

Nearby in the registry

The prefixes assigned immediately before and after E0:E6:56:

FAQ

Which company owns MAC address prefix E0:E6:56?: MAC address prefix E0:E6:56 is registered to Nethesis srl in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E0:E6:56 has a network interface built by Nethesis srl.
What is the OUI E0:E6:56?: E0:E6:56 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nethesis srl. It covers every address from E0:E6:56:00:00:00 to E0:E6:56:FF:FF:FF, or 16,777,216 addresses in total. It is also written E0-E6-56.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E0:E6:56:00:00:00 that is E0:E6:56 — 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 Nethesis srl located?: Nethesis srl is listed at strada degli olmi 12 Pesaro Pesaro e Urbino IT 61122 in the IEEE OUI registry entry for E0:E6:56. This is the address the organization registered with the IEEE, which may differ from its current operating address.