Which company owns MAC address prefix C0:A3:9E?

MAC address prefix C0:A3:9E is registered to EarthCam, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:A3:9E has a network interface built by EarthCam, Inc..

What is the OUI C0:A3:9E?

C0:A3:9E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to EarthCam, Inc.. It covers every address from C0:A3:9E:00:00:00 to C0:A3:9E:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-A3-9E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C0:A3:9E:00:00:00 that is C0:A3:9E — 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 EarthCam, Inc. located?

EarthCam, Inc. is listed at 650 E Crescent Ave. Upper Saddle River NJ US 07458 in the IEEE OUI registry entry for C0:A3:9E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

EarthCam, Inc.

MAC address prefix C0:A3:9E is registered to EarthCam, Inc. in the IEEE OUI registry. Any device whose MAC address begins with C0:A3:9E has a network interface built by EarthCam, 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 C0:A3:9E:00:00:00 to C0:A3:9E:FF:FF:FF.

OUI prefix: C0:A3:9E
Hyphen form: C0-A3-9E
MAC range: C0:A3:9E:00:00:00 – C0:A3:9E:FF:FF:FF
Addresses in block: 16,777,216
Organization: EarthCam, Inc.
Address: 650 E Crescent Ave. Upper Saddle River NJ US 07458
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 "EarthCam, Inc."
archived source →
2026-07-17Assigned to "EarthCam, Inc."

Nearby in the registry

The prefixes assigned immediately before and after C0:A3:9E:

FAQ

Which company owns MAC address prefix C0:A3:9E?: MAC address prefix C0:A3:9E is registered to EarthCam, Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:A3:9E has a network interface built by EarthCam, Inc..
What is the OUI C0:A3:9E?: C0:A3:9E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to EarthCam, Inc.. It covers every address from C0:A3:9E:00:00:00 to C0:A3:9E:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-A3-9E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C0:A3:9E:00:00:00 that is C0:A3:9E — 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 EarthCam, Inc. located?: EarthCam, Inc. is listed at 650 E Crescent Ave. Upper Saddle River NJ US 07458 in the IEEE OUI registry entry for C0:A3:9E. This is the address the organization registered with the IEEE, which may differ from its current operating address.