Which company owns MAC address prefix 7C:43:8F?

MAC address prefix 7C:43:8F is registered to E-Band Communications Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 7C:43:8F has a network interface built by E-Band Communications Corp..

What is the OUI 7C:43:8F?

7C:43:8F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to E-Band Communications Corp.. It covers every address from 7C:43:8F:00:00:00 to 7C:43:8F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 7C-43-8F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 7C:43:8F:00:00:00 that is 7C:43:8F — 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 E-Band Communications Corp. located?

E-Band Communications Corp. is listed at 10095 Scripps Ranch Ct. Ste A San Diego CA US 92131 in the IEEE OUI registry entry for 7C:43:8F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

E-Band Communications Corp.

MAC address prefix 7C:43:8F is registered to E-Band Communications Corp. in the IEEE OUI registry. Any device whose MAC address begins with 7C:43:8F has a network interface built by E-Band Communications Corp.. 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 7C:43:8F:00:00:00 to 7C:43:8F:FF:FF:FF.

OUI prefix: 7C:43:8F
Hyphen form: 7C-43-8F
MAC range: 7C:43:8F:00:00:00 – 7C:43:8F:FF:FF:FF
Addresses in block: 16,777,216
Organization: E-Band Communications Corp.
Address: 10095 Scripps Ranch Ct. Ste A San Diego CA US 92131
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 "E-Band Communications Corp."
archived source →
2026-07-17Assigned to "E-Band Communications Corp."

Nearby in the registry

The prefixes assigned immediately before and after 7C:43:8F:

FAQ

Which company owns MAC address prefix 7C:43:8F?: MAC address prefix 7C:43:8F is registered to E-Band Communications Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 7C:43:8F has a network interface built by E-Band Communications Corp..
What is the OUI 7C:43:8F?: 7C:43:8F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to E-Band Communications Corp.. It covers every address from 7C:43:8F:00:00:00 to 7C:43:8F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 7C-43-8F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 7C:43:8F:00:00:00 that is 7C:43:8F — 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 E-Band Communications Corp. located?: E-Band Communications Corp. is listed at 10095 Scripps Ranch Ct. Ste A San Diego CA US 92131 in the IEEE OUI registry entry for 7C:43:8F. This is the address the organization registered with the IEEE, which may differ from its current operating address.