Which company owns MAC address prefix 70:23:93?

MAC address prefix 70:23:93 is registered to Polytech A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:23:93 has a network interface built by Polytech A/S.

What is the OUI 70:23:93?

70:23:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Polytech A/S. It covers every address from 70:23:93:00:00:00 to 70:23:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-23-93.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 70:23:93:00:00:00 that is 70:23:93 — 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 Polytech A/S located?

Polytech A/S is listed at Thalkirchner Str. 210, Geb. 6 81371 München DE 0 in the IEEE OUI registry entry for 70:23:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Polytech A/S

MAC address prefix 70:23:93 is registered to Polytech A/S in the IEEE OUI registry. Any device whose MAC address begins with 70:23:93 has a network interface built by Polytech A/S. 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 70:23:93:00:00:00 to 70:23:93:FF:FF:FF.

OUI prefix: 70:23:93
Hyphen form: 70-23-93
MAC range: 70:23:93:00:00:00 – 70:23:93:FF:FF:FF
Addresses in block: 16,777,216
Organization: Polytech A/S
Address: Thalkirchner Str. 210, Geb. 6 81371 München DE 0
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 (3)

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 "fos4X GmbH"
archived source →
2026-06-20Renamed from "fos4X GmbH" to "Polytech A/S"
archived source →
2026-07-17Assigned to "Polytech A/S"

Nearby in the registry

The prefixes assigned immediately before and after 70:23:93:

FAQ

Which company owns MAC address prefix 70:23:93?: MAC address prefix 70:23:93 is registered to Polytech A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 70:23:93 has a network interface built by Polytech A/S.
What is the OUI 70:23:93?: 70:23:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Polytech A/S. It covers every address from 70:23:93:00:00:00 to 70:23:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 70-23-93.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 70:23:93:00:00:00 that is 70:23:93 — 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 Polytech A/S located?: Polytech A/S is listed at Thalkirchner Str. 210, Geb. 6 81371 München DE 0 in the IEEE OUI registry entry for 70:23:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.