Which company owns MAC address prefix 90:3D:BD?

MAC address prefix 90:3D:BD is registered to SECURE METERS LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:3D:BD has a network interface built by SECURE METERS LIMITED.

What is the OUI 90:3D:BD?

90:3D:BD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SECURE METERS LIMITED. It covers every address from 90:3D:BD:00:00:00 to 90:3D:BD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-3D-BD.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:3D:BD:00:00:00 that is 90:3D:BD — 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 SECURE METERS LIMITED located?

SECURE METERS LIMITED is listed at E CLASS, PRATAP NAGAR INDUSTRIAL AREA UDAIPUR RAJASTHAN IN 313003 in the IEEE OUI registry entry for 90:3D:BD. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SECURE METERS LIMITED

MAC address prefix 90:3D:BD is registered to SECURE METERS LIMITED in the IEEE OUI registry. Any device whose MAC address begins with 90:3D:BD has a network interface built by SECURE METERS LIMITED. 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 90:3D:BD:00:00:00 to 90:3D:BD:FF:FF:FF.

OUI prefix: 90:3D:BD
Hyphen form: 90-3D-BD
MAC range: 90:3D:BD:00:00:00 – 90:3D:BD:FF:FF:FF
Addresses in block: 16,777,216
Organization: SECURE METERS LIMITED
Address: E CLASS, PRATAP NAGAR INDUSTRIAL AREA UDAIPUR RAJASTHAN IN 313003
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.

2017-09-08Assigned to "SECURE METERS LIMITED"
archived source →
2026-07-17Assigned to "SECURE METERS LIMITED"

Nearby in the registry

The prefixes assigned immediately before and after 90:3D:BD:

FAQ

Which company owns MAC address prefix 90:3D:BD?: MAC address prefix 90:3D:BD is registered to SECURE METERS LIMITED in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:3D:BD has a network interface built by SECURE METERS LIMITED.
What is the OUI 90:3D:BD?: 90:3D:BD is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SECURE METERS LIMITED. It covers every address from 90:3D:BD:00:00:00 to 90:3D:BD:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-3D-BD.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:3D:BD:00:00:00 that is 90:3D:BD — 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 SECURE METERS LIMITED located?: SECURE METERS LIMITED is listed at E CLASS, PRATAP NAGAR INDUSTRIAL AREA UDAIPUR RAJASTHAN IN 313003 in the IEEE OUI registry entry for 90:3D:BD. This is the address the organization registered with the IEEE, which may differ from its current operating address.