Which company owns MAC address prefix 48:9D:18?

MAC address prefix 48:9D:18 is registered to Flashbay Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:9D:18 has a network interface built by Flashbay Limited.

What is the OUI 48:9D:18?

48:9D:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Flashbay Limited. It covers every address from 48:9D:18:00:00:00 to 48:9D:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-9D-18.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 48:9D:18:00:00:00 that is 48:9D:18 — 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 Flashbay Limited located?

Flashbay Limited is listed at 6 The Fountain Centre London London GB SW6 2TW in the IEEE OUI registry entry for 48:9D:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Flashbay Limited

MAC address prefix 48:9D:18 is registered to Flashbay Limited in the IEEE OUI registry. Any device whose MAC address begins with 48:9D:18 has a network interface built by Flashbay Limited. 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 48:9D:18:00:00:00 to 48:9D:18:FF:FF:FF.

OUI prefix: 48:9D:18
Hyphen form: 48-9D-18
MAC range: 48:9D:18:00:00:00 – 48:9D:18:FF:FF:FF
Addresses in block: 16,777,216
Organization: Flashbay Limited
Address: 6 The Fountain Centre London London GB SW6 2TW
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.

2016-07-29Assigned to "Flashbay Limited"
archived source →
2026-07-17Assigned to "Flashbay Limited"

Nearby in the registry

The prefixes assigned immediately before and after 48:9D:18:

FAQ

Which company owns MAC address prefix 48:9D:18?: MAC address prefix 48:9D:18 is registered to Flashbay Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:9D:18 has a network interface built by Flashbay Limited.
What is the OUI 48:9D:18?: 48:9D:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Flashbay Limited. It covers every address from 48:9D:18:00:00:00 to 48:9D:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-9D-18.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 48:9D:18:00:00:00 that is 48:9D:18 — 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 Flashbay Limited located?: Flashbay Limited is listed at 6 The Fountain Centre London London GB SW6 2TW in the IEEE OUI registry entry for 48:9D:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.