Which company owns MAC address prefix CC:CC:77?

MAC address prefix CC:CC:77 is registered to Zaram Technology. Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:CC:77 has a network interface built by Zaram Technology. Inc..

What is the OUI CC:CC:77?

CC:CC:77 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zaram Technology. Inc.. It covers every address from CC:CC:77:00:00:00 to CC:CC:77:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-CC-77.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:CC:77:00:00:00 that is CC:CC:77 — 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 Zaram Technology. Inc. located?

Zaram Technology. Inc. is listed at 2nd Fl, Fine Venture Building, 41, Seongnam-daero 925beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea [13496] Bundang-gu KR 13496 in the IEEE OUI registry entry for CC:CC:77. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Zaram Technology. Inc.

MAC address prefix CC:CC:77 is registered to Zaram Technology. Inc. in the IEEE OUI registry. Any device whose MAC address begins with CC:CC:77 has a network interface built by Zaram Technology. 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 CC:CC:77:00:00:00 to CC:CC:77:FF:FF:FF.

OUI prefix: CC:CC:77
Hyphen form: CC-CC-77
MAC range: CC:CC:77:00:00:00 – CC:CC:77:FF:FF:FF
Addresses in block: 16,777,216
Organization: Zaram Technology. Inc.
Address: 2nd Fl, Fine Venture Building, 41, Seongnam-daero 925beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea [13496] Bundang-gu KR 13496
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.

2022-09-05Assigned to "Zaram Technology. Inc."
archived source →
2026-07-17Assigned to "Zaram Technology. Inc."

Nearby in the registry

The prefixes assigned immediately before and after CC:CC:77:

FAQ

Which company owns MAC address prefix CC:CC:77?: MAC address prefix CC:CC:77 is registered to Zaram Technology. Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:CC:77 has a network interface built by Zaram Technology. Inc..
What is the OUI CC:CC:77?: CC:CC:77 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Zaram Technology. Inc.. It covers every address from CC:CC:77:00:00:00 to CC:CC:77:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-CC-77.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:CC:77:00:00:00 that is CC:CC:77 — 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 Zaram Technology. Inc. located?: Zaram Technology. Inc. is listed at 2nd Fl, Fine Venture Building, 41, Seongnam-daero 925beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea [13496] Bundang-gu KR 13496 in the IEEE OUI registry entry for CC:CC:77. This is the address the organization registered with the IEEE, which may differ from its current operating address.