Which company owns MAC address prefix 90:F7:2F?

MAC address prefix 90:F7:2F is registered to Phillips Machine & Welding Co., Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:F7:2F has a network interface built by Phillips Machine & Welding Co., Inc..

What is the OUI 90:F7:2F?

90:F7:2F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Phillips Machine & Welding Co., Inc.. It covers every address from 90:F7:2F:00:00:00 to 90:F7:2F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-F7-2F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:F7:2F:00:00:00 that is 90:F7:2F — 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 Phillips Machine & Welding Co., Inc. located?

Phillips Machine & Welding Co., Inc. is listed at 16125 E. Gale Ave. Industry CA US 91745 in the IEEE OUI registry entry for 90:F7:2F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Phillips Machine & Welding Co., Inc.

MAC address prefix 90:F7:2F is registered to Phillips Machine & Welding Co., Inc. in the IEEE OUI registry. Any device whose MAC address begins with 90:F7:2F has a network interface built by Phillips Machine & Welding Co., 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 90:F7:2F:00:00:00 to 90:F7:2F:FF:FF:FF.

OUI prefix: 90:F7:2F
Hyphen form: 90-F7-2F
MAC range: 90:F7:2F:00:00:00 – 90:F7:2F:FF:FF:FF
Addresses in block: 16,777,216
Organization: Phillips Machine & Welding Co., Inc.
Address: 16125 E. Gale Ave. Industry CA US 91745
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 "Phillips Machine & Welding Co., Inc."
archived source →
2026-07-17Assigned to "Phillips Machine & Welding Co., Inc."

Nearby in the registry

The prefixes assigned immediately before and after 90:F7:2F:

FAQ

Which company owns MAC address prefix 90:F7:2F?: MAC address prefix 90:F7:2F is registered to Phillips Machine & Welding Co., Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:F7:2F has a network interface built by Phillips Machine & Welding Co., Inc..
What is the OUI 90:F7:2F?: 90:F7:2F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Phillips Machine & Welding Co., Inc.. It covers every address from 90:F7:2F:00:00:00 to 90:F7:2F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-F7-2F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:F7:2F:00:00:00 that is 90:F7:2F — 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 Phillips Machine & Welding Co., Inc. located?: Phillips Machine & Welding Co., Inc. is listed at 16125 E. Gale Ave. Industry CA US 91745 in the IEEE OUI registry entry for 90:F7:2F. This is the address the organization registered with the IEEE, which may differ from its current operating address.