Which company owns MAC address prefix 10:1D:51?

MAC address prefix 10:1D:51 is registered to 8Mesh Networks Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:1D:51 has a network interface built by 8Mesh Networks Limited.

What is the OUI 10:1D:51?

10:1D:51 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to 8Mesh Networks Limited. It covers every address from 10:1D:51:00:00:00 to 10:1D:51:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-1D-51.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 10:1D:51:00:00:00 that is 10:1D:51 — 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 8Mesh Networks Limited located?

8Mesh Networks Limited is listed at Unit 607, 6/F, Yen Sheng Centre, 64 Hoi Yuen Road Kwun Tong HK 000 in the IEEE OUI registry entry for 10:1D:51. This is the address the organization registered with the IEEE, which may differ from its current operating address.

8Mesh Networks Limited

MAC address prefix 10:1D:51 is registered to 8Mesh Networks Limited in the IEEE OUI registry. Any device whose MAC address begins with 10:1D:51 has a network interface built by 8Mesh Networks 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 10:1D:51:00:00:00 to 10:1D:51:FF:FF:FF.

OUI prefix: 10:1D:51
Hyphen form: 10-1D-51
MAC range: 10:1D:51:00:00:00 – 10:1D:51:FF:FF:FF
Addresses in block: 16,777,216
Organization: 8Mesh Networks Limited
Address: Unit 607, 6/F, Yen Sheng Centre, 64 Hoi Yuen Road Kwun Tong HK 000
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 (3)

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 "ON-Q LLC dba ON-Q Mesh Networks"
archived source →
2018-12-21Renamed from "ON-Q LLC dba ON-Q Mesh Networks" to "8Mesh Networks Limited"
archived source →
2026-07-17Assigned to "8Mesh Networks Limited"

Nearby in the registry

The prefixes assigned immediately before and after 10:1D:51:

FAQ

Which company owns MAC address prefix 10:1D:51?: MAC address prefix 10:1D:51 is registered to 8Mesh Networks Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:1D:51 has a network interface built by 8Mesh Networks Limited.
What is the OUI 10:1D:51?: 10:1D:51 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to 8Mesh Networks Limited. It covers every address from 10:1D:51:00:00:00 to 10:1D:51:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-1D-51.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 10:1D:51:00:00:00 that is 10:1D:51 — 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 8Mesh Networks Limited located?: 8Mesh Networks Limited is listed at Unit 607, 6/F, Yen Sheng Centre, 64 Hoi Yuen Road Kwun Tong HK 000 in the IEEE OUI registry entry for 10:1D:51. This is the address the organization registered with the IEEE, which may differ from its current operating address.