Amazon's hardware MACs are registered under "Amazon Technologies Inc." (about 198 blocks) at a Reno, NV P.O. box — an IP-holding address, not Seattle corporate HQ. Two acquired subsidiaries keep their own registrants: "eero inc." (about 108 blocks, San Francisco) and "Ring LLC" (about 12 blocks), so a network may show eero or Ring rather than Amazon. These OUIs span Echo/Alexa speakers, Fire TV, Fire tablets, Kindle e-readers, Ring doorbells/cameras, eero mesh Wi-Fi, and Blink cameras. Ring was acquired in 2018 (~$1B), eero's acquisition was announced 11 February 2019, and Blink in 2017. Fire OS (Android-derived) tablets support MAC randomization. For triage, Amazon/eero/Ring OUIs are overwhelmingly consumer-IoT and shadow-IT indicators in enterprise contexts: an eero OUI on a corporate LAN frequently means an unauthorized mesh router, while Ring/Blink suggest cameras phoning home to AWS. Aggregating the three registrants gives the full Amazon-ecosystem picture.
- IEEE assignment
- ~198 prefixes → Amazon Technologies Inc. (Reno, NV); ~108 → eero inc. (San Francisco); ~12 → Ring LLC [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L predominant (MA-M/MA-S available); Amazon ~198 blocks; eero ~108; Ring ~12 [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 (oui.csv 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
- P.O. Box 8102, Reno, NV 89507, US (IP-holding address, not corporate HQ); eero at 660 3rd Street, San Francisco, CA 94107 [Confirmed] — IEEE MA-L
- Company status
- active; Ring acquired 2018 (~$1B); eero acquisition announced 2019-02-11; Blink acquired 2017 [Confirmed] — press.aboutamazon.com, variety.com
- Device types
- Echo/Alexa speakers, Fire TV, Fire tablets, Kindle e-readers, Ring doorbells/cameras, eero mesh Wi-Fi, Blink cameras [Confirmed] — maclookup.app
- Notable products
- Echo, Fire TV, Kindle, Ring, eero
- Verified prefix sample
- Amazon — 4C:EF:C0, 78:6C:84, 90:23:5B, 00:71:47, A0:02:DC; eero — 28:EC:22, 6C:AE:F6, F0:21:E0, D0:16:7C [Confirmed] — maclookup.app
- Special note
- eero and Ring keep their own OUIs (registered before/around acquisition), so lookups may show "eero inc." / "Ring LLC" rather than Amazon. Fire OS tablets support MAC randomization. [Likely] — maclookup.app
- Related vendors
- parent Amazon.com, Inc.; subsidiaries eero, Ring, Blink
- Analyst note
- Amazon/eero/Ring OUIs are overwhelmingly consumer-IoT and shadow-IT indicators in enterprise contexts; an eero OUI on a corporate LAN frequently means an unauthorized mesh router, while Ring/Blink suggest cameras phoning home to AWS.