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SIMCom Wireless Solutions Limited

MAC address prefix B8:DB:3D is registered to SIMCom Wireless Solutions Limited in the IEEE OUI registry. Any device whose MAC address begins with B8:DB:3D has a network interface built by SIMCom Wireless Solutions 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 B8:DB:3D:00:00:00 to B8:DB:3D:FF:FF:FF.

OUI prefix
B8:DB:3D
Hyphen form
B8-DB-3D
MAC range
B8:DB:3D:00:00:00 – B8:DB:3D:FF:FF:FF
Addresses in block
16,777,216
Organization
SIMCom Wireless Solutions Limited
Address
SIMCom Headquarters Building, Building 3, No. 289 Linhong Road, Changning District, Shanghai P.R. China Shanghai CN 200335
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.

Other prefixes from SIMCom Wireless Solutions Limited

SIMCom Wireless Solutions Limited holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

  1. 2026-09-29Assigned to "SIMCom Wireless Solutions Limited"

Nearby in the registry

The prefixes assigned immediately before and after B8:DB:3D:

FAQ

Which company owns MAC address prefix B8:DB:3D?
MAC address prefix B8:DB:3D is registered to SIMCom Wireless Solutions Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:DB:3D has a network interface built by SIMCom Wireless Solutions Limited.
What is the OUI B8:DB:3D?
B8:DB:3D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SIMCom Wireless Solutions Limited. It covers every address from B8:DB:3D:00:00:00 to B8:DB:3D:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-DB-3D.
How do I find the manufacturer of a MAC address?
Take the first three octets of the address — in B8:DB:3D:00:00:00 that is B8:DB:3D — 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 SIMCom Wireless Solutions Limited located?
SIMCom Wireless Solutions Limited is listed at SIMCom Headquarters Building, Building 3, No. 289 Linhong Road, Changning District, Shanghai P.R. China Shanghai CN 200335 in the IEEE OUI registry entry for B8:DB:3D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does SIMCom Wireless Solutions Limited own?
SIMCom Wireless Solutions Limited holds 2 OUI prefixes in the IEEE registry, of which B8:DB:3D is one. A device made by SIMCom Wireless Solutions Limited could carry a MAC address from any of them.