Which company owns MAC address prefix 10:E8:3A?

MAC address prefix 10:E8:3A is registered to FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:E8:3A has a network interface built by FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 10:E8:3A:00:00:00 that is 10:E8:3A — 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.

FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA

MAC address prefix 10:E8:3A is registered to FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA in the IEEE OUI registry. Any device whose MAC address begins with 10:E8:3A has a network interface built by FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA. 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 10:E8:3A:00:00:00 to 10:E8:3A:FF:FF:FF.

OUI prefix: 10:E8:3A
Hyphen form: 10-E8-3A
MAC range: 10:E8:3A:00:00:00 – 10:E8:3A:FF:FF:FF
Addresses in block: 16,777,216
Organization: FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA
Address: RUA JOSE NEOLI CRUZ, 5000 PORTO BELO SANTA CATARINA BR 88210000
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.

2023-07-11Assigned to "FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA"
archived source →
2026-07-17Assigned to "FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA"

Nearby in the registry

The prefixes assigned immediately before and after 10:E8:3A:

FAQ

Which company owns MAC address prefix 10:E8:3A?: MAC address prefix 10:E8:3A is registered to FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:E8:3A has a network interface built by FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA.
What is the OUI 10:E8:3A?: 10:E8:3A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA. It covers every address from 10:E8:3A:00:00:00 to 10:E8:3A:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-E8-3A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 10:E8:3A:00:00:00 that is 10:E8:3A — 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 FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA located?: FIBERX DISTRIBUIDORA DE PRODUTOS DE TELECOMUNICACAO LTDA is listed at RUA JOSE NEOLI CRUZ, 5000 PORTO BELO SANTA CATARINA BR 88210000 in the IEEE OUI registry entry for 10:E8:3A. This is the address the organization registered with the IEEE, which may differ from its current operating address.