Which company owns MAC address prefix E8:56:D6?

MAC address prefix E8:56:D6 is registered to NCTech Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:56:D6 has a network interface built by NCTech Ltd.

What is the OUI E8:56:D6?

E8:56:D6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to NCTech Ltd. It covers every address from E8:56:D6:00:00:00 to E8:56:D6:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-56-D6.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E8:56:D6:00:00:00 that is E8:56:D6 — 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 NCTech Ltd located?

NCTech Ltd is listed at 20-22 Braid Road Edinburgh GB EH10 6AD in the IEEE OUI registry entry for E8:56:D6. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does NCTech Ltd own?

NCTech Ltd holds 2 OUI prefixes in the IEEE registry, of which E8:56:D6 is one. A device made by NCTech Ltd could carry a MAC address from any of them.

NCTech Ltd

MAC address prefix E8:56:D6 is registered to NCTech Ltd in the IEEE OUI registry. Any device whose MAC address begins with E8:56:D6 has a network interface built by NCTech Ltd. 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 E8:56:D6:00:00:00 to E8:56:D6:FF:FF:FF.

OUI prefix: E8:56:D6
Hyphen form: E8-56-D6
MAC range: E8:56:D6:00:00:00 – E8:56:D6:FF:FF:FF
Addresses in block: 16,777,216
Organization: NCTech Ltd
Address: 20-22 Braid Road Edinburgh GB EH10 6AD
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.

Other prefixes from NCTech Ltd

NCTech Ltd holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

9C:E1:0E

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 "NCTech Ltd"
archived source →
2026-07-17Assigned to "NCTech Ltd"

Nearby in the registry

The prefixes assigned immediately before and after E8:56:D6:

FAQ

Which company owns MAC address prefix E8:56:D6?: MAC address prefix E8:56:D6 is registered to NCTech Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:56:D6 has a network interface built by NCTech Ltd.
What is the OUI E8:56:D6?: E8:56:D6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to NCTech Ltd. It covers every address from E8:56:D6:00:00:00 to E8:56:D6:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-56-D6.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E8:56:D6:00:00:00 that is E8:56:D6 — 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 NCTech Ltd located?: NCTech Ltd is listed at 20-22 Braid Road Edinburgh GB EH10 6AD in the IEEE OUI registry entry for E8:56:D6. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does NCTech Ltd own?: NCTech Ltd holds 2 OUI prefixes in the IEEE registry, of which E8:56:D6 is one. A device made by NCTech Ltd could carry a MAC address from any of them.