Which company owns MAC address prefix D0:3E:7D?

MAC address prefix D0:3E:7D is registered to CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:3E:7D has a network interface built by CHIPSEA TECHNOLOGIES (SHENZHEN) CORP..

What is the OUI D0:3E:7D?

D0:3E:7D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.. It covers every address from D0:3E:7D:00:00:00 to D0:3E:7D:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-3E-7D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D0:3E:7D:00:00:00 that is D0:3E:7D — 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 CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. located?

CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. is listed at 9F,BLOCK A,GARDEN CITY DIGITAL BUILDING,NO.1079 NANHAI ROAD,NANSHAN DISTRICT SHEN ZHEN GUANG DONG CN 518000 in the IEEE OUI registry entry for D0:3E:7D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. own?

CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. holds 6 OUI prefixes in the IEEE registry, of which D0:3E:7D is one. A device made by CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. could carry a MAC address from any of them.

CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.

MAC address prefix D0:3E:7D is registered to CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. in the IEEE OUI registry. Any device whose MAC address begins with D0:3E:7D has a network interface built by CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.. 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 D0:3E:7D:00:00:00 to D0:3E:7D:FF:FF:FF.

OUI prefix: D0:3E:7D
Hyphen form: D0-3E-7D
MAC range: D0:3E:7D:00:00:00 – D0:3E:7D:FF:FF:FF
Addresses in block: 16,777,216
Organization: CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.
Address: 9F,BLOCK A,GARDEN CITY DIGITAL BUILDING,NO.1079 NANHAI ROAD,NANSHAN DISTRICT SHEN ZHEN GUANG DONG CN 518000
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 CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.

CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. holds 6 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

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

2021-06-10Assigned to "CHIPSEA TECHNOLOGIES (SHENZHEN) CORP."
archived source →
2026-07-17Assigned to "CHIPSEA TECHNOLOGIES (SHENZHEN) CORP."

Nearby in the registry

The prefixes assigned immediately before and after D0:3E:7D:

FAQ

Which company owns MAC address prefix D0:3E:7D?: MAC address prefix D0:3E:7D is registered to CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:3E:7D has a network interface built by CHIPSEA TECHNOLOGIES (SHENZHEN) CORP..
What is the OUI D0:3E:7D?: D0:3E:7D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CHIPSEA TECHNOLOGIES (SHENZHEN) CORP.. It covers every address from D0:3E:7D:00:00:00 to D0:3E:7D:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-3E-7D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D0:3E:7D:00:00:00 that is D0:3E:7D — 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 CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. located?: CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. is listed at 9F,BLOCK A,GARDEN CITY DIGITAL BUILDING,NO.1079 NANHAI ROAD,NANSHAN DISTRICT SHEN ZHEN GUANG DONG CN 518000 in the IEEE OUI registry entry for D0:3E:7D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. own?: CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. holds 6 OUI prefixes in the IEEE registry, of which D0:3E:7D is one. A device made by CHIPSEA TECHNOLOGIES (SHENZHEN) CORP. could carry a MAC address from any of them.