Which company owns MAC address prefix E8:AC:7E?

MAC address prefix E8:AC:7E is registered to TERAHOP PTE.LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:AC:7E has a network interface built by TERAHOP PTE.LTD..

What is the OUI E8:AC:7E?

E8:AC:7E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TERAHOP PTE.LTD.. It covers every address from E8:AC:7E:00:00:00 to E8:AC:7E:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-AC-7E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in E8:AC:7E:00:00:00 that is E8:AC:7E — 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 TERAHOP PTE.LTD. located?

TERAHOP PTE.LTD. is listed at 25 INTERNATIONAL BUSINESS PARK #02-72/75 GERMAN CENTRE SINGAPORE (609916) Singapore SG 609916 in the IEEE OUI registry entry for E8:AC:7E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TERAHOP PTE.LTD.

MAC address prefix E8:AC:7E is registered to TERAHOP PTE.LTD. in the IEEE OUI registry. Any device whose MAC address begins with E8:AC:7E has a network interface built by TERAHOP PTE.LTD.. 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 E8:AC:7E:00:00:00 to E8:AC:7E:FF:FF:FF.

OUI prefix: E8:AC:7E
Hyphen form: E8-AC-7E
MAC range: E8:AC:7E:00:00:00 – E8:AC:7E:FF:FF:FF
Addresses in block: 16,777,216
Organization: TERAHOP PTE.LTD.
Address: 25 INTERNATIONAL BUSINESS PARK #02-72/75 GERMAN CENTRE SINGAPORE (609916) Singapore SG 609916
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.

2024-11-20Assigned to "TERAHOP PTE.LTD."
archived source →
2026-07-17Assigned to "TERAHOP PTE.LTD."

Nearby in the registry

The prefixes assigned immediately before and after E8:AC:7E:

FAQ

Which company owns MAC address prefix E8:AC:7E?: MAC address prefix E8:AC:7E is registered to TERAHOP PTE.LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with E8:AC:7E has a network interface built by TERAHOP PTE.LTD..
What is the OUI E8:AC:7E?: E8:AC:7E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TERAHOP PTE.LTD.. It covers every address from E8:AC:7E:00:00:00 to E8:AC:7E:FF:FF:FF, or 16,777,216 addresses in total. It is also written E8-AC-7E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in E8:AC:7E:00:00:00 that is E8:AC:7E — 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 TERAHOP PTE.LTD. located?: TERAHOP PTE.LTD. is listed at 25 INTERNATIONAL BUSINESS PARK #02-72/75 GERMAN CENTRE SINGAPORE (609916) Singapore SG 609916 in the IEEE OUI registry entry for E8:AC:7E. This is the address the organization registered with the IEEE, which may differ from its current operating address.