Which company owns MAC address prefix BC:E5:9F?

MAC address prefix BC:E5:9F is registered to WATERWORLD Technology Co.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:E5:9F has a network interface built by WATERWORLD Technology Co.,LTD.

What is the OUI BC:E5:9F?

BC:E5:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WATERWORLD Technology Co.,LTD. It covers every address from BC:E5:9F:00:00:00 to BC:E5:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-E5-9F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in BC:E5:9F:00:00:00 that is BC:E5:9F — 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 WATERWORLD Technology Co.,LTD located?

WATERWORLD Technology Co.,LTD is listed at 6 Floor,Block B,Digital Building,Garden City,No.1079,Nanhai Road,Nanshan District, Shenzhen Guangdong US 518067 in the IEEE OUI registry entry for BC:E5:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

WATERWORLD Technology Co.,LTD

MAC address prefix BC:E5:9F is registered to WATERWORLD Technology Co.,LTD in the IEEE OUI registry. Any device whose MAC address begins with BC:E5:9F has a network interface built by WATERWORLD Technology Co.,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 BC:E5:9F:00:00:00 to BC:E5:9F:FF:FF:FF.

OUI prefix: BC:E5:9F
Hyphen form: BC-E5-9F
MAC range: BC:E5:9F:00:00:00 – BC:E5:9F:FF:FF:FF
Addresses in block: 16,777,216
Organization: WATERWORLD Technology Co.,LTD
Address: 6 Floor,Block B,Digital Building,Garden City,No.1079,Nanhai Road,Nanshan District, Shenzhen Guangdong US 518067
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.

2016-07-29Assigned to "WATERWORLD Technology Co.,LTD"
archived source →
2026-07-17Assigned to "WATERWORLD Technology Co.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after BC:E5:9F:

FAQ

Which company owns MAC address prefix BC:E5:9F?: MAC address prefix BC:E5:9F is registered to WATERWORLD Technology Co.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with BC:E5:9F has a network interface built by WATERWORLD Technology Co.,LTD.
What is the OUI BC:E5:9F?: BC:E5:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WATERWORLD Technology Co.,LTD. It covers every address from BC:E5:9F:00:00:00 to BC:E5:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written BC-E5-9F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in BC:E5:9F:00:00:00 that is BC:E5:9F — 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 WATERWORLD Technology Co.,LTD located?: WATERWORLD Technology Co.,LTD is listed at 6 Floor,Block B,Digital Building,Garden City,No.1079,Nanhai Road,Nanshan District, Shenzhen Guangdong US 518067 in the IEEE OUI registry entry for BC:E5:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.