Which company owns MAC address prefix 88:9D:98?

MAC address prefix 88:9D:98 is registered to Allied-telesisK.K. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:9D:98 has a network interface built by Allied-telesisK.K..

What is the OUI 88:9D:98?

88:9D:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Allied-telesisK.K.. It covers every address from 88:9D:98:00:00:00 to 88:9D:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-9D-98.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 88:9D:98:00:00:00 that is 88:9D:98 — 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 Allied-telesisK.K. located?

Allied-telesisK.K. is listed at 7-21-11 Nishi-Gotannda Shinagawa-ku Tokyo JP 141-0031 in the IEEE OUI registry entry for 88:9D:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Allied-telesisK.K.

MAC address prefix 88:9D:98 is registered to Allied-telesisK.K. in the IEEE OUI registry. Any device whose MAC address begins with 88:9D:98 has a network interface built by Allied-telesisK.K.. 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 88:9D:98:00:00:00 to 88:9D:98:FF:FF:FF.

OUI prefix: 88:9D:98
Hyphen form: 88-9D-98
MAC range: 88:9D:98:00:00:00 – 88:9D:98:FF:FF:FF
Addresses in block: 16,777,216
Organization: Allied-telesisK.K.
Address: 7-21-11 Nishi-Gotannda Shinagawa-ku Tokyo JP 141-0031
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.

2019-07-04Assigned to "Allied-telesisK.K."
archived source →
2026-07-17Assigned to "Allied-telesisK.K."

Nearby in the registry

The prefixes assigned immediately before and after 88:9D:98:

FAQ

Which company owns MAC address prefix 88:9D:98?: MAC address prefix 88:9D:98 is registered to Allied-telesisK.K. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:9D:98 has a network interface built by Allied-telesisK.K..
What is the OUI 88:9D:98?: 88:9D:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Allied-telesisK.K.. It covers every address from 88:9D:98:00:00:00 to 88:9D:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-9D-98.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 88:9D:98:00:00:00 that is 88:9D:98 — 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 Allied-telesisK.K. located?: Allied-telesisK.K. is listed at 7-21-11 Nishi-Gotannda Shinagawa-ku Tokyo JP 141-0031 in the IEEE OUI registry entry for 88:9D:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.