Which company owns MAC address prefix 34:A8:DB?

MAC address prefix 34:A8:DB is registered to SenArch ApS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:A8:DB has a network interface built by SenArch ApS.

What is the OUI 34:A8:DB?

34:A8:DB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SenArch ApS. It covers every address from 34:A8:DB:00:00:00 to 34:A8:DB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-A8-DB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 34:A8:DB:00:00:00 that is 34:A8:DB — 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 SenArch ApS located?

SenArch ApS is listed at C/O DTU Science Park Diplomvej 372, 1. Kgs Lyngby Copenhagen DK 2800 in the IEEE OUI registry entry for 34:A8:DB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SenArch ApS

MAC address prefix 34:A8:DB is registered to SenArch ApS in the IEEE OUI registry. Any device whose MAC address begins with 34:A8:DB has a network interface built by SenArch ApS. 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 34:A8:DB:00:00:00 to 34:A8:DB:FF:FF:FF.

OUI prefix: 34:A8:DB
Hyphen form: 34-A8-DB
MAC range: 34:A8:DB:00:00:00 – 34:A8:DB:FF:FF:FF
Addresses in block: 16,777,216
Organization: SenArch ApS
Address: C/O DTU Science Park Diplomvej 372, 1. Kgs Lyngby Copenhagen DK 2800
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.

2024-09-17Assigned to "SenArch ApS"
archived source →
2026-07-17Assigned to "SenArch ApS"

Nearby in the registry

The prefixes assigned immediately before and after 34:A8:DB:

FAQ

Which company owns MAC address prefix 34:A8:DB?: MAC address prefix 34:A8:DB is registered to SenArch ApS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 34:A8:DB has a network interface built by SenArch ApS.
What is the OUI 34:A8:DB?: 34:A8:DB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SenArch ApS. It covers every address from 34:A8:DB:00:00:00 to 34:A8:DB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 34-A8-DB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 34:A8:DB:00:00:00 that is 34:A8:DB — 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 SenArch ApS located?: SenArch ApS is listed at C/O DTU Science Park Diplomvej 372, 1. Kgs Lyngby Copenhagen DK 2800 in the IEEE OUI registry entry for 34:A8:DB. This is the address the organization registered with the IEEE, which may differ from its current operating address.