Which company owns MAC address prefix CC:3F:1D?

MAC address prefix CC:3F:1D is registered to HMS Industrial Networks SLU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:3F:1D has a network interface built by HMS Industrial Networks SLU.

What is the OUI CC:3F:1D?

CC:3F:1D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HMS Industrial Networks SLU. It covers every address from CC:3F:1D:00:00:00 to CC:3F:1D:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-3F-1D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:3F:1D:00:00:00 that is CC:3F:1D — 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 HMS Industrial Networks SLU located?

HMS Industrial Networks SLU is listed at Milà i Fontanals 7 Igualada Barcelona ES 08700 in the IEEE OUI registry entry for CC:3F:1D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

HMS Industrial Networks SLU

MAC address prefix CC:3F:1D is registered to HMS Industrial Networks SLU in the IEEE OUI registry. Any device whose MAC address begins with CC:3F:1D has a network interface built by HMS Industrial Networks SLU. 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 CC:3F:1D:00:00:00 to CC:3F:1D:FF:FF:FF.

OUI prefix: CC:3F:1D
Hyphen form: CC-3F-1D
MAC range: CC:3F:1D:00:00:00 – CC:3F:1D:FF:FF:FF
Addresses in block: 16,777,216
Organization: HMS Industrial Networks SLU
Address: Milà i Fontanals 7 Igualada Barcelona ES 08700
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 "Intesis Software SL"
archived source →
2022-07-11Renamed from "Intesis Software SL" to "HMS Industrial Networks SLU"
archived source →
2026-07-17Assigned to "HMS Industrial Networks SLU"

Nearby in the registry

The prefixes assigned immediately before and after CC:3F:1D:

FAQ

Which company owns MAC address prefix CC:3F:1D?: MAC address prefix CC:3F:1D is registered to HMS Industrial Networks SLU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:3F:1D has a network interface built by HMS Industrial Networks SLU.
What is the OUI CC:3F:1D?: CC:3F:1D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HMS Industrial Networks SLU. It covers every address from CC:3F:1D:00:00:00 to CC:3F:1D:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-3F-1D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:3F:1D:00:00:00 that is CC:3F:1D — 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 HMS Industrial Networks SLU located?: HMS Industrial Networks SLU is listed at Milà i Fontanals 7 Igualada Barcelona ES 08700 in the IEEE OUI registry entry for CC:3F:1D. This is the address the organization registered with the IEEE, which may differ from its current operating address.