Which company owns MAC address prefix 98:77:CB?

MAC address prefix 98:77:CB is registered to Vorteks ED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 98:77:CB has a network interface built by Vorteks ED.

What is the OUI 98:77:CB?

98:77:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Vorteks ED. It covers every address from 98:77:CB:00:00:00 to 98:77:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 98-77-CB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 98:77:CB:00:00:00 that is 98:77:CB — 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 Vorteks ED located?

Vorteks ED is listed at Mirkovci, Street 2, number 142a Skopje MK 1000 in the IEEE OUI registry entry for 98:77:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Vorteks ED

MAC address prefix 98:77:CB is registered to Vorteks ED in the IEEE OUI registry. Any device whose MAC address begins with 98:77:CB has a network interface built by Vorteks ED. 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 98:77:CB:00:00:00 to 98:77:CB:FF:FF:FF.

OUI prefix: 98:77:CB
Hyphen form: 98-77-CB
MAC range: 98:77:CB:00:00:00 – 98:77:CB:FF:FF:FF
Addresses in block: 16,777,216
Organization: Vorteks ED
Address: Mirkovci, Street 2, number 142a Skopje MK 1000
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.

2022-07-11Assigned to "Vorteks ED"
archived source →
2026-07-17Assigned to "Vorteks ED"

Nearby in the registry

The prefixes assigned immediately before and after 98:77:CB:

FAQ

Which company owns MAC address prefix 98:77:CB?: MAC address prefix 98:77:CB is registered to Vorteks ED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 98:77:CB has a network interface built by Vorteks ED.
What is the OUI 98:77:CB?: 98:77:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Vorteks ED. It covers every address from 98:77:CB:00:00:00 to 98:77:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 98-77-CB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 98:77:CB:00:00:00 that is 98:77:CB — 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 Vorteks ED located?: Vorteks ED is listed at Mirkovci, Street 2, number 142a Skopje MK 1000 in the IEEE OUI registry entry for 98:77:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.