Which company owns MAC address prefix 90:55:AE?

MAC address prefix 90:55:AE is registered to Ericsson, EAB/RWI/K in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:55:AE has a network interface built by Ericsson, EAB/RWI/K.

What is the OUI 90:55:AE?

90:55:AE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ericsson, EAB/RWI/K. It covers every address from 90:55:AE:00:00:00 to 90:55:AE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-55-AE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:55:AE:00:00:00 that is 90:55:AE — 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 Ericsson, EAB/RWI/K located?

Ericsson, EAB/RWI/K is listed at Skolgången 17 Gävle SE SE-800 06 in the IEEE OUI registry entry for 90:55:AE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Ericsson, EAB/RWI/K own?

Ericsson, EAB/RWI/K holds 2 OUI prefixes in the IEEE registry, of which 90:55:AE is one. A device made by Ericsson, EAB/RWI/K could carry a MAC address from any of them.

Ericsson, EAB/RWI/K

MAC address prefix 90:55:AE is registered to Ericsson, EAB/RWI/K in the IEEE OUI registry. Any device whose MAC address begins with 90:55:AE has a network interface built by Ericsson, EAB/RWI/K. 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 90:55:AE:00:00:00 to 90:55:AE:FF:FF:FF.

OUI prefix: 90:55:AE
Hyphen form: 90-55-AE
MAC range: 90:55:AE:00:00:00 – 90:55:AE:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ericsson, EAB/RWI/K
Address: Skolgången 17 Gävle SE SE-800 06
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 Ericsson, EAB/RWI/K

Ericsson, EAB/RWI/K holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

C8:35:B8

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 "Ericsson, EAB/RWI/K"
archived source →
2026-07-17Assigned to "Ericsson, EAB/RWI/K"

Nearby in the registry

The prefixes assigned immediately before and after 90:55:AE:

FAQ

Which company owns MAC address prefix 90:55:AE?: MAC address prefix 90:55:AE is registered to Ericsson, EAB/RWI/K in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:55:AE has a network interface built by Ericsson, EAB/RWI/K.
What is the OUI 90:55:AE?: 90:55:AE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ericsson, EAB/RWI/K. It covers every address from 90:55:AE:00:00:00 to 90:55:AE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-55-AE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:55:AE:00:00:00 that is 90:55:AE — 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 Ericsson, EAB/RWI/K located?: Ericsson, EAB/RWI/K is listed at Skolgången 17 Gävle SE SE-800 06 in the IEEE OUI registry entry for 90:55:AE. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Ericsson, EAB/RWI/K own?: Ericsson, EAB/RWI/K holds 2 OUI prefixes in the IEEE registry, of which 90:55:AE is one. A device made by Ericsson, EAB/RWI/K could carry a MAC address from any of them.