Which company owns MAC address prefix E8:56:59?

MAC address prefix E8:56:59 is registered to Advanced-Connectek Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:56:59 has a network interface built by Advanced-Connectek Inc..

What is the OUI E8:56:59?

E8:56:59 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced-Connectek Inc.. It covers every address from E8:56:59:00:00:00 to E8:56:59:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-56-59.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E8:56:59:00:00:00 that is E8:56:59 — 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 Advanced-Connectek Inc. located?

Advanced-Connectek Inc. is listed at No. 2,Alley 9, Lane 45, Baoxing Rd., Xiadian Dist., New Taipei City TW 231 in the IEEE OUI registry entry for E8:56:59. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Advanced-Connectek Inc.

MAC address prefix E8:56:59 is registered to Advanced-Connectek Inc. in the IEEE OUI registry. Any device whose MAC address begins with E8:56:59 has a network interface built by Advanced-Connectek Inc.. 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 E8:56:59:00:00:00 to E8:56:59:FF:FF:FF.

OUI prefix: E8:56:59
Hyphen form: E8-56-59
MAC range: E8:56:59:00:00:00 – E8:56:59:FF:FF:FF
Addresses in block: 16,777,216
Organization: Advanced-Connectek Inc.
Address: No. 2,Alley 9, Lane 45, Baoxing Rd., Xiadian Dist., New Taipei City TW 231
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 "Advanced-Connectek Inc."
archived source →
2026-07-17Assigned to "Advanced-Connectek Inc."

Nearby in the registry

The prefixes assigned immediately before and after E8:56:59:

FAQ

Which company owns MAC address prefix E8:56:59?: MAC address prefix E8:56:59 is registered to Advanced-Connectek Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:56:59 has a network interface built by Advanced-Connectek Inc..
What is the OUI E8:56:59?: E8:56:59 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Advanced-Connectek Inc.. It covers every address from E8:56:59:00:00:00 to E8:56:59:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-56-59.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E8:56:59:00:00:00 that is E8:56:59 — 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 Advanced-Connectek Inc. located?: Advanced-Connectek Inc. is listed at No. 2,Alley 9, Lane 45, Baoxing Rd., Xiadian Dist., New Taipei City TW 231 in the IEEE OUI registry entry for E8:56:59. This is the address the organization registered with the IEEE, which may differ from its current operating address.