Which company owns MAC address prefix A0:E0:25?

MAC address prefix A0:E0:25 is registered to Provision-ISR in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:E0:25 has a network interface built by Provision-ISR.

What is the OUI A0:E0:25?

A0:E0:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Provision-ISR. It covers every address from A0:E0:25:00:00:00 to A0:E0:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-E0-25.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:E0:25:00:00:00 that is A0:E0:25 — 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 Provision-ISR located?

Provision-ISR is listed at Atir Yeda 11 Kfar Saba IL 4464310 in the IEEE OUI registry entry for A0:E0:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Provision-ISR

MAC address prefix A0:E0:25 is registered to Provision-ISR in the IEEE OUI registry. Any device whose MAC address begins with A0:E0:25 has a network interface built by Provision-ISR. 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 A0:E0:25:00:00:00 to A0:E0:25:FF:FF:FF.

OUI prefix: A0:E0:25
Hyphen form: A0-E0-25
MAC range: A0:E0:25:00:00:00 – A0:E0:25:FF:FF:FF
Addresses in block: 16,777,216
Organization: Provision-ISR
Address: Atir Yeda 11 Kfar Saba IL 4464310
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.

2024-02-15Assigned to "Provision-ISR"
archived source →
2026-07-17Assigned to "Provision-ISR"

Nearby in the registry

The prefixes assigned immediately before and after A0:E0:25:

FAQ

Which company owns MAC address prefix A0:E0:25?: MAC address prefix A0:E0:25 is registered to Provision-ISR in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:E0:25 has a network interface built by Provision-ISR.
What is the OUI A0:E0:25?: A0:E0:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Provision-ISR. It covers every address from A0:E0:25:00:00:00 to A0:E0:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-E0-25.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:E0:25:00:00:00 that is A0:E0:25 — 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 Provision-ISR located?: Provision-ISR is listed at Atir Yeda 11 Kfar Saba IL 4464310 in the IEEE OUI registry entry for A0:E0:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.