Nokia Solutions and Networks GmbH & Co. KG
MAC address prefix A0:91:CA is registered to Nokia Solutions and Networks GmbH & Co. KG in the IEEE OUI registry. Any device whose MAC address begins with A0:91:CA has a network interface built by Nokia Solutions and Networks GmbH & Co. KG. 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 A0:91:CA:00:00:00 to A0:91:CA:FF:FF:FF.
- OUI prefix
- A0:91:CA
- Hyphen form
- A0-91-CA
- MAC range
- A0:91:CA:00:00:00 – A0:91:CA:FF:FF:FF
- Addresses in block
- 16,777,216
- Organization
- Nokia Solutions and Networks GmbH & Co. KG
- Address
- Werinherstrasse 91 München Bavaria DE D-81541
- 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 Nokia Solutions and Networks GmbH & Co. KG
Nokia Solutions and Networks GmbH & Co. KG holds 35 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.
- 2024-11-20Assigned to "Nokia Solutions and Networks GmbH & Co. KG"archived source →
- 2026-07-17Assigned to "Nokia Solutions and Networks GmbH & Co. KG"
Nearby in the registry
The prefixes assigned immediately before and after A0:91:CA:
- Sagemcom Broadband SASA0:8E:78
- Tiinlab CorporationA0:90:B5
- VEEDIMS,LLCA0:90:DE
- LG Electronics (Mobile Communications)A0:91:69
- OnePlus Electronics (Shenzhen) Co., Ltd.A0:91:A2
- zte corporationA0:91:C8
- Tuya Smart Inc.A0:92:08
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTDA0:93:47
- Cisco Systems, IncA0:93:51
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTDA0:94:1A
- Shenzhen XGTEC Technology Co,.Ltd.A0:94:6A
- China Mobile IOT Company LimitedA0:95:0C
FAQ
- Which company owns MAC address prefix A0:91:CA?
- MAC address prefix A0:91:CA is registered to Nokia Solutions and Networks GmbH & Co. KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:91:CA has a network interface built by Nokia Solutions and Networks GmbH & Co. KG.
- What is the OUI A0:91:CA?
- A0:91:CA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Nokia Solutions and Networks GmbH & Co. KG. It covers every address from A0:91:CA:00:00:00 to A0:91:CA:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-91-CA.
- How do I find the manufacturer of a MAC address?
- Take the first three octets of the address — in A0:91:CA:00:00:00 that is A0:91:CA — 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 Nokia Solutions and Networks GmbH & Co. KG located?
- Nokia Solutions and Networks GmbH & Co. KG is listed at Werinherstrasse 91 München Bavaria DE D-81541 in the IEEE OUI registry entry for A0:91:CA. This is the address the organization registered with the IEEE, which may differ from its current operating address.
- How many MAC prefixes does Nokia Solutions and Networks GmbH & Co. KG own?
- Nokia Solutions and Networks GmbH & Co. KG holds 35 OUI prefixes in the IEEE registry, of which A0:91:CA is one. A device made by Nokia Solutions and Networks GmbH & Co. KG could carry a MAC address from any of them.