Which company owns MAC address prefix 48:D7:FF?

MAC address prefix 48:D7:FF is registered to BLANKOM Antennentechnik GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:D7:FF has a network interface built by BLANKOM Antennentechnik GmbH.

What is the OUI 48:D7:FF?

48:D7:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BLANKOM Antennentechnik GmbH. It covers every address from 48:D7:FF:00:00:00 to 48:D7:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-D7-FF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 48:D7:FF:00:00:00 that is 48:D7:FF — 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 BLANKOM Antennentechnik GmbH located?

BLANKOM Antennentechnik GmbH is listed at Hermann-Petersilge Str. 1 Bad Blankenburg TH DE 07422 in the IEEE OUI registry entry for 48:D7:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BLANKOM Antennentechnik GmbH

MAC address prefix 48:D7:FF is registered to BLANKOM Antennentechnik GmbH in the IEEE OUI registry. Any device whose MAC address begins with 48:D7:FF has a network interface built by BLANKOM Antennentechnik GmbH. 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 48:D7:FF:00:00:00 to 48:D7:FF:FF:FF:FF.

OUI prefix: 48:D7:FF
Hyphen form: 48-D7-FF
MAC range: 48:D7:FF:00:00:00 – 48:D7:FF:FF:FF:FF
Addresses in block: 16,777,216
Organization: BLANKOM Antennentechnik GmbH
Address: Hermann-Petersilge Str. 1 Bad Blankenburg TH DE 07422
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 "BLANKOM Antennentechnik GmbH"
archived source →
2026-07-17Assigned to "BLANKOM Antennentechnik GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 48:D7:FF:

FAQ

Which company owns MAC address prefix 48:D7:FF?: MAC address prefix 48:D7:FF is registered to BLANKOM Antennentechnik GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:D7:FF has a network interface built by BLANKOM Antennentechnik GmbH.
What is the OUI 48:D7:FF?: 48:D7:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BLANKOM Antennentechnik GmbH. It covers every address from 48:D7:FF:00:00:00 to 48:D7:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-D7-FF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 48:D7:FF:00:00:00 that is 48:D7:FF — 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 BLANKOM Antennentechnik GmbH located?: BLANKOM Antennentechnik GmbH is listed at Hermann-Petersilge Str. 1 Bad Blankenburg TH DE 07422 in the IEEE OUI registry entry for 48:D7:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.