Which company owns MAC address prefix 1C:A8:52?

MAC address prefix 1C:A8:52 is registered to SENSAIO PTE LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 1C:A8:52 has a network interface built by SENSAIO PTE LTD.

What is the OUI 1C:A8:52?

1C:A8:52 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SENSAIO PTE LTD. It covers every address from 1C:A8:52:00:00:00 to 1C:A8:52:FF:FF:FF, or 16,777,216 addresses in total. It is also written 1C-A8-52.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 1C:A8:52:00:00:00 that is 1C:A8:52 — 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 SENSAIO PTE LTD located?

SENSAIO PTE LTD is listed at 160 Robinson Road #14-04 SINGAPORE SINGAPORE SG 068914 in the IEEE OUI registry entry for 1C:A8:52. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SENSAIO PTE LTD

MAC address prefix 1C:A8:52 is registered to SENSAIO PTE LTD in the IEEE OUI registry. Any device whose MAC address begins with 1C:A8:52 has a network interface built by SENSAIO PTE 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 1C:A8:52:00:00:00 to 1C:A8:52:FF:FF:FF.

OUI prefix: 1C:A8:52
Hyphen form: 1C-A8-52
MAC range: 1C:A8:52:00:00:00 – 1C:A8:52:FF:FF:FF
Addresses in block: 16,777,216
Organization: SENSAIO PTE LTD
Address: 160 Robinson Road #14-04 SINGAPORE SINGAPORE SG 068914
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.

2020-11-28Assigned to "SENSAIO PTE LTD"
archived source →
2026-07-17Assigned to "SENSAIO PTE LTD"

Nearby in the registry

The prefixes assigned immediately before and after 1C:A8:52:

FAQ

Which company owns MAC address prefix 1C:A8:52?: MAC address prefix 1C:A8:52 is registered to SENSAIO PTE LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 1C:A8:52 has a network interface built by SENSAIO PTE LTD.
What is the OUI 1C:A8:52?: 1C:A8:52 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SENSAIO PTE LTD. It covers every address from 1C:A8:52:00:00:00 to 1C:A8:52:FF:FF:FF, or 16,777,216 addresses in total. It is also written 1C-A8-52.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 1C:A8:52:00:00:00 that is 1C:A8:52 — 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 SENSAIO PTE LTD located?: SENSAIO PTE LTD is listed at 160 Robinson Road #14-04 SINGAPORE SINGAPORE SG 068914 in the IEEE OUI registry entry for 1C:A8:52. This is the address the organization registered with the IEEE, which may differ from its current operating address.