Google — ~103 (Google, Inc.) + ~2 (Nest Labs Inc.) prefixes (MA-L + CID)

Google's MAC footprint is registered under the historic IEEE name "Google, Inc." (about 103 blocks) even though the operating entity renamed to Google LLC in the 2015 Alphabet reorganization — a registrant-name lag worth normalizing. Nest hardware is registered separately as "Nest Labs Inc." (about 2 blocks), reflecting the 2014 acquisition. Google blocks list a Mountain View, CA address (HQ 1600 Amphitheatre Parkway); Nest blocks list older Palo Alto addresses. These OUIs appear across Pixel phones, the Nest smart-home line (thermostats, cameras, doorbells, speakers/displays), Chromecast, Google Wifi/Nest Wifi, Chromebook reference hardware, and Fiber CPE. The key analyst caveat is MAC randomization: Pixel phones, like all Android 10+ devices, randomize their Wi-Fi MAC by default (Android 12+ adds non-persistent per-connection randomization), so a randomized Pixel presents a locally-administered address rather than a Google OUI. Nest devices generally still use globally-unique Nest Labs / Google OUIs. For triage, a Google/Nest OUI on a corporate network most often signals consumer/IoT shadow-IT — a Nest cam, Chromecast, or an employee's Pixel — rather than managed infrastructure, and unexpected Nest Labs OUIs are smart-home devices that bridge to cloud services.

IEEE assignment

~103 prefixes → Google, Inc. (Mountain View, CA); ~2 → Nest Labs Inc. (Palo Alto, CA) [Confirmed] — IEEE MA-L

Registry / block size

MA-L plus one CID (DA:A1:19); Google ~103 blocks; Nest Labs ~2 [Confirmed assignments] — maclookup.app (IEEE-derived; counts are a current third-party snapshot and drift). NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" from third-party tools is a database artifact, not an IEEE fact.

HQ / country

1600 Amphitheatre Parkway, Mountain View, CA 94043, US (Google); Nest blocks list 3400 Hillview Ave / 235 Alma, Palo Alto, CA [Confirmed] — IEEE MA-L

Company status

active; "Google, Inc." → Google LLC under Alphabet Inc. (2015); Nest Labs acquired by Google (2014) [Confirmed] — en.wikipedia.org/wiki/Googleplex

Device types

Pixel phones, Nest smart-home (thermostats/cameras/doorbells/speakers/displays), Chromecast, Google Wifi/Nest Wifi, Chromebook reference, Fiber CPE [Confirmed] — maclookup.app

Notable products

Pixel, Nest, Chromecast, Nest Wifi/Google Wifi

Verified prefix sample (Google, Inc.)

00:1A:11, 3C:5A:B4, 94:EB:2C, A4:77:33, F8:8F:CA, F4:F5:E8; Nest Labs: 18:B4:30, 64:16:66 [Confirmed] — maclookup.app

Special note

Pixel phones randomize Wi-Fi MAC by default (Android 10+; Android 12+ non-persistent). A randomized Pixel MAC is locally administered and does NOT resolve to Google. Nest devices generally use globally-unique Nest Labs/Google OUIs. Normalize "Google, Inc." ↔ Google LLC.

[Confirmed] — source.android.com

Related vendors

parent Alphabet Inc.; subsidiary Nest Labs Inc. (separate OUI registrant); sibling Google Fiber

Analyst note

A Google/Nest OUI on a corporate network most often signals consumer/IoT shadow-IT (Nest cam, Chromecast, employee Pixel) rather than managed infrastructure; treat unexpected Nest Labs OUIs as smart-home devices that bridge to cloud services.