Nest Labs, Inc. — 2 prefixes (MA-L)

A MAC address starting with 64:16:66 or 18:B4:30 belongs to Nest Labs Inc., typically seen on smart home hardware such as Nest Learning Thermostats, Nest Protect smoke/CO detectors, and Nest Cam Wi-Fi security cameras.

Nest Labs was founded in 2010 in Palo Alto, California, by Tony Fadell and Matt Rogers, both former Apple engineers. Both of its IEEE OUI registrations list the identical registrant string "Nest Labs Inc." at 3400 Hillview Ave., Palo Alto, CA 94304 — matching the company's documented headquarters address.

Google acquired Nest Labs in a deal announced January 13, 2014, and closed the next day, for $3.2 billion. Nest operated as a distinct subsidiary through 2018, when Google folded it into its hardware division under the unified "Google Nest" brand; Nest ceased existing as a separate business entity at that point. As of an August 2026 check, nest.com issues a live redirect to the Google Store's connected-home section.

In August 2019, Cisco Talos disclosed eight vulnerabilities in the Nest Cam IQ Indoor's Weave/OpenWeave protocol stack. The most severe, CVE-2019-5035 (CVSS v3 9.0), is a brute-forceable pairing-code disclosure; CVE-2019-5039 is a heap-based buffer overflow enabling remote code execution. Both are listed on NVD under the vendor name "Nest Labs," directly corroborating this registrant against real shipped hardware.

Device class

Smart home devices — learning thermostats, smoke/CO detectors, Wi-Fi security cameras

Registry blocks

64:16:66 and 18:B4:30 (both MA-L, same registrant string and address)

Company status

Acquired by Google (announced Jan 13, 2014); folded into the "Google Nest" brand in 2018; no longer a separate entity

Also seen on

Nest Cam IQ Indoor, firmware 4620002 (per NVD CVE-2019-5035, vendor field "Nest Labs")

IEEE assignment

64:16:66 and 18:B4:30 → Nest Labs Inc., registered Palo Alto, CA, US [Confirmed] — the IEEE MA-L registry (641666), the IEEE MA-L registry (18B430)

Registry / block size

MA-L (24-bit OUI); two dedicated /24 assignments under the identical registrant string [Confirmed] — the IEEE MA-L registry (641666), the IEEE MA-L registry (18B430)

Registry coverage

no rows for "Nest Labs" found in the IEEE MA-M registry (MA-M) or the IEEE MA-S registry (MA-S) — only the two MA-L entries exist [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

HQ / registered address

3400 Hillview Ave., Palo Alto, CA 94304, US — matches Nest Labs' documented founding headquarters [Confirmed] — the IEEE MA-L registry (641666); https://en.wikipedia.org/wiki/Nest_Labs

Company status

founded 2010; acquired by Google, deal announced Jan 13, 2014, closed Jan 14, 2014, for $3.2 billion; folded into "Google Nest" brand in 2018, ending as a distinct entity [Confirmed] — https://en.wikipedia.org/wiki/Nest_Labs; https://www.forbes.com/sites/aarontilley/2014/01/13/google-acquires-nest-for-3-2-billion/

Device types

Nest Learning Thermostat (2011), Nest Protect (Oct 2013), Nest Cam (from the 2014 Dropcam acquisition, branded June 2015) [Confirmed] — https://en.wikipedia.org/wiki/Nest_Labs

Security context

CVE-2019-5035 (CVSS v3 9.0) and CVE-2019-5039 (remote code execution), among eight Weave/OpenWeave vulnerabilities disclosed by Cisco Talos in the Nest Cam IQ Indoor, listed on NVD under vendor "Nest Labs"; no CVE specific to the Nest Learning Thermostat or Nest Protect found as of an August 2026 search [Confirmed] — https://nvd.nist.gov/vuln/detail/CVE-2019-5035; https://blog.talosintelligence.com/vuln-spotlight-nest-camera-openweave-aug-2019/

IEEE registration date

not published by IEEE for either block; any "date registered" shown by third-party MAC-lookup tools is a database artifact of that tool, not an IEEE fact [Confirmed] — the IEEE MA-L registry

Shared-base check

both 64:16:66 and 18:B4:30 are dedicated /24 blocks assigned solely to Nest Labs Inc., not one of the large shared IEEE-RA bases sub-allocated across many unrelated registrants [Confirmed] — the IEEE MA-L registry (641666), the IEEE MA-L registry (18B430)

Current website

nest.com issues a live redirect to the Google Store's connected-home section as of an August 2026 check [Confirmed] — https://nest.com

Related vendors

Google, Inc. (parent since 2014; holds separate OUI registrations under its own "vendor-google" entry, not covered here) [Confirmed] — this site's own enrichment records