Which company owns MAC address prefix B4:F9:49?

MAC address prefix B4:F9:49 is registered to optilink networks pvt ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:F9:49 has a network interface built by optilink networks pvt ltd.

What is the OUI B4:F9:49?

B4:F9:49 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to optilink networks pvt ltd. It covers every address from B4:F9:49:00:00:00 to B4:F9:49:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-F9-49.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:F9:49:00:00:00 that is B4:F9:49 — 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 optilink networks pvt ltd located?

optilink networks pvt ltd is listed at 501/502, sanjona complex, hemu kalani marg, chembur mumbai maharashtra IN 400071 in the IEEE OUI registry entry for B4:F9:49. This is the address the organization registered with the IEEE, which may differ from its current operating address.

optilink networks pvt ltd

MAC address prefix B4:F9:49 is registered to optilink networks pvt ltd in the IEEE OUI registry. Any device whose MAC address begins with B4:F9:49 has a network interface built by optilink networks pvt 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 B4:F9:49:00:00:00 to B4:F9:49:FF:FF:FF.

OUI prefix: B4:F9:49
Hyphen form: B4-F9-49
MAC range: B4:F9:49:00:00:00 – B4:F9:49:FF:FF:FF
Addresses in block: 16,777,216
Organization: optilink networks pvt ltd
Address: 501/502, sanjona complex, hemu kalani marg, chembur mumbai maharashtra IN 400071
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.

2018-12-21Assigned to "optilink networks pvt ltd"
archived source →
2026-07-17Assigned to "optilink networks pvt ltd"

Nearby in the registry

The prefixes assigned immediately before and after B4:F9:49:

FAQ

Which company owns MAC address prefix B4:F9:49?: MAC address prefix B4:F9:49 is registered to optilink networks pvt ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:F9:49 has a network interface built by optilink networks pvt ltd.
What is the OUI B4:F9:49?: B4:F9:49 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to optilink networks pvt ltd. It covers every address from B4:F9:49:00:00:00 to B4:F9:49:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-F9-49.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:F9:49:00:00:00 that is B4:F9:49 — 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 optilink networks pvt ltd located?: optilink networks pvt ltd is listed at 501/502, sanjona complex, hemu kalani marg, chembur mumbai maharashtra IN 400071 in the IEEE OUI registry entry for B4:F9:49. This is the address the organization registered with the IEEE, which may differ from its current operating address.