Which company owns MAC address prefix E8:1A:58?

MAC address prefix E8:1A:58 is registered to TECHNOLOGIC SYSTEMS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:1A:58 has a network interface built by TECHNOLOGIC SYSTEMS.

What is the OUI E8:1A:58?

E8:1A:58 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TECHNOLOGIC SYSTEMS. It covers every address from E8:1A:58:00:00:00 to E8:1A:58:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-1A-58.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E8:1A:58:00:00:00 that is E8:1A:58 — 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 TECHNOLOGIC SYSTEMS located?

TECHNOLOGIC SYSTEMS is listed at 16525 E Laser Dr Fountain Hills AZ US 85268-6534 in the IEEE OUI registry entry for E8:1A:58. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does TECHNOLOGIC SYSTEMS own?

TECHNOLOGIC SYSTEMS holds 2 OUI prefixes in the IEEE registry, of which E8:1A:58 is one. A device made by TECHNOLOGIC SYSTEMS could carry a MAC address from any of them.

TECHNOLOGIC SYSTEMS

MAC address prefix E8:1A:58 is registered to TECHNOLOGIC SYSTEMS in the IEEE OUI registry. Any device whose MAC address begins with E8:1A:58 has a network interface built by TECHNOLOGIC SYSTEMS. 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 E8:1A:58:00:00:00 to E8:1A:58:FF:FF:FF.

OUI prefix: E8:1A:58
Hyphen form: E8-1A-58
MAC range: E8:1A:58:00:00:00 – E8:1A:58:FF:FF:FF
Addresses in block: 16,777,216
Organization: TECHNOLOGIC SYSTEMS
Address: 16525 E Laser Dr Fountain Hills AZ US 85268-6534
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 TECHNOLOGIC SYSTEMS

TECHNOLOGIC SYSTEMS holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

00:D0:69

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2018-12-21Assigned to "TECHNOLOGIC SYSTEMS"
archived source →
2026-07-17Assigned to "TECHNOLOGIC SYSTEMS"

Nearby in the registry

The prefixes assigned immediately before and after E8:1A:58:

FAQ

Which company owns MAC address prefix E8:1A:58?: MAC address prefix E8:1A:58 is registered to TECHNOLOGIC SYSTEMS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:1A:58 has a network interface built by TECHNOLOGIC SYSTEMS.
What is the OUI E8:1A:58?: E8:1A:58 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TECHNOLOGIC SYSTEMS. It covers every address from E8:1A:58:00:00:00 to E8:1A:58:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-1A-58.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E8:1A:58:00:00:00 that is E8:1A:58 — 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 TECHNOLOGIC SYSTEMS located?: TECHNOLOGIC SYSTEMS is listed at 16525 E Laser Dr Fountain Hills AZ US 85268-6534 in the IEEE OUI registry entry for E8:1A:58. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does TECHNOLOGIC SYSTEMS own?: TECHNOLOGIC SYSTEMS holds 2 OUI prefixes in the IEEE registry, of which E8:1A:58 is one. A device made by TECHNOLOGIC SYSTEMS could carry a MAC address from any of them.