Which company owns MAC address prefix 00:05:A7?

MAC address prefix 00:05:A7 is registered to HYPERCHIP Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:05:A7 has a network interface built by HYPERCHIP Inc..

What is the OUI 00:05:A7?

00:05:A7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYPERCHIP Inc.. It covers every address from 00:05:A7:00:00:00 to 00:05:A7:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-05-A7.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:05:A7:00:00:00 that is 00:05:A7 — 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 HYPERCHIP Inc. located?

HYPERCHIP Inc. is listed at 180 Peel Street - Ste. #333 123 CA H3C 2G7 in the IEEE OUI registry entry for 00:05:A7. This is the address the organization registered with the IEEE, which may differ from its current operating address.

HYPERCHIP Inc.

MAC address prefix 00:05:A7 is registered to HYPERCHIP Inc. in the IEEE OUI registry. Any device whose MAC address begins with 00:05:A7 has a network interface built by HYPERCHIP 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 00:05:A7:00:00:00 to 00:05:A7:FF:FF:FF.

OUI prefix: 00:05:A7
Hyphen form: 00-05-A7
MAC range: 00:05:A7:00:00:00 – 00:05:A7:FF:FF:FF
Addresses in block: 16,777,216
Organization: HYPERCHIP Inc.
Address: 180 Peel Street - Ste. #333 123 CA H3C 2G7
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 (3)

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 "Hyperchip, Inc."
archived source →
2017-09-08Renamed from "Hyperchip, Inc." to "HYPERCHIP Inc."
archived source →
2026-07-17Assigned to "HYPERCHIP Inc."

Nearby in the registry

The prefixes assigned immediately before and after 00:05:A7:

FAQ

Which company owns MAC address prefix 00:05:A7?: MAC address prefix 00:05:A7 is registered to HYPERCHIP Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:05:A7 has a network interface built by HYPERCHIP Inc..
What is the OUI 00:05:A7?: 00:05:A7 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYPERCHIP Inc.. It covers every address from 00:05:A7:00:00:00 to 00:05:A7:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-05-A7.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:05:A7:00:00:00 that is 00:05:A7 — 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 HYPERCHIP Inc. located?: HYPERCHIP Inc. is listed at 180 Peel Street - Ste. #333 123 CA H3C 2G7 in the IEEE OUI registry entry for 00:05:A7. This is the address the organization registered with the IEEE, which may differ from its current operating address.