Which company owns MAC address prefix 00:1B:26?

MAC address prefix 00:1B:26 is registered to RON-Telecom ZAO in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1B:26 has a network interface built by RON-Telecom ZAO.

What is the OUI 00:1B:26?

00:1B:26 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RON-Telecom ZAO. It covers every address from 00:1B:26:00:00:00 to 00:1B:26:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1B-26.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:1B:26:00:00:00 that is 00:1B:26 — 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 RON-Telecom ZAO located?

RON-Telecom ZAO is listed at 15 A, Zarechnaya st. Trehgorny Chelyabinsk region RU 456080 in the IEEE OUI registry entry for 00:1B:26. This is the address the organization registered with the IEEE, which may differ from its current operating address.

RON-Telecom ZAO

MAC address prefix 00:1B:26 is registered to RON-Telecom ZAO in the IEEE OUI registry. Any device whose MAC address begins with 00:1B:26 has a network interface built by RON-Telecom ZAO. 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 00:1B:26:00:00:00 to 00:1B:26:FF:FF:FF.

OUI prefix: 00:1B:26
Hyphen form: 00-1B-26
MAC range: 00:1B:26:00:00:00 – 00:1B:26:FF:FF:FF
Addresses in block: 16,777,216
Organization: RON-Telecom ZAO
Address: 15 A, Zarechnaya st. Trehgorny Chelyabinsk region RU 456080
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 "RON-Telecom ZAO"
archived source →
2026-07-17Assigned to "RON-Telecom ZAO"

Nearby in the registry

The prefixes assigned immediately before and after 00:1B:26:

FAQ

Which company owns MAC address prefix 00:1B:26?: MAC address prefix 00:1B:26 is registered to RON-Telecom ZAO in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1B:26 has a network interface built by RON-Telecom ZAO.
What is the OUI 00:1B:26?: 00:1B:26 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RON-Telecom ZAO. It covers every address from 00:1B:26:00:00:00 to 00:1B:26:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1B-26.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:1B:26:00:00:00 that is 00:1B:26 — 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 RON-Telecom ZAO located?: RON-Telecom ZAO is listed at 15 A, Zarechnaya st. Trehgorny Chelyabinsk region RU 456080 in the IEEE OUI registry entry for 00:1B:26. This is the address the organization registered with the IEEE, which may differ from its current operating address.