Which company owns MAC address prefix 20:97:27?

MAC address prefix 20:97:27 is registered to TELTONIKA NETWORKS UAB in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:97:27 has a network interface built by TELTONIKA NETWORKS UAB.

What is the OUI 20:97:27?

20:97:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TELTONIKA NETWORKS UAB. It covers every address from 20:97:27:00:00:00 to 20:97:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-97-27.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:97:27:00:00:00 that is 20:97:27 — 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 TELTONIKA NETWORKS UAB located?

TELTONIKA NETWORKS UAB is listed at K. Baršausko st. 66, Kaunas Kaunas LT LT-51436 in the IEEE OUI registry entry for 20:97:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TELTONIKA NETWORKS UAB

MAC address prefix 20:97:27 is registered to TELTONIKA NETWORKS UAB in the IEEE OUI registry. Any device whose MAC address begins with 20:97:27 has a network interface built by TELTONIKA NETWORKS UAB. 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 20:97:27:00:00:00 to 20:97:27:FF:FF:FF.

OUI prefix: 20:97:27
Hyphen form: 20-97-27
MAC range: 20:97:27:00:00:00 – 20:97:27:FF:FF:FF
Addresses in block: 16,777,216
Organization: TELTONIKA NETWORKS UAB
Address: K. Baršausko st. 66, Kaunas Kaunas LT LT-51436
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.

2023-07-11Assigned to "TELTONIKA NETWORKS UAB"
archived source →
2026-07-17Assigned to "TELTONIKA NETWORKS UAB"

Nearby in the registry

The prefixes assigned immediately before and after 20:97:27:

FAQ

Which company owns MAC address prefix 20:97:27?: MAC address prefix 20:97:27 is registered to TELTONIKA NETWORKS UAB in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:97:27 has a network interface built by TELTONIKA NETWORKS UAB.
What is the OUI 20:97:27?: 20:97:27 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TELTONIKA NETWORKS UAB. It covers every address from 20:97:27:00:00:00 to 20:97:27:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-97-27.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:97:27:00:00:00 that is 20:97:27 — 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 TELTONIKA NETWORKS UAB located?: TELTONIKA NETWORKS UAB is listed at K. Baršausko st. 66, Kaunas Kaunas LT LT-51436 in the IEEE OUI registry entry for 20:97:27. This is the address the organization registered with the IEEE, which may differ from its current operating address.