A.O. Smith Water Products — 0C:84:11 (MA-L)

A MAC address beginning 0C:84:11 belongs to A.O. Smith Water Products, the McBee, South Carolina manufacturing division that registers OUIs for A.O. Smith Corporation (NYSE: AOS), and it typically appears on the company's networked commercial and residential water heaters rather than on general-purpose computing hardware.

The IEEE registration lists the registrant as "A.O. Smith Water Products" at 25589 Hwy 1, McBee, SC 29101, US, under a single MA-L block, 0C:84:11. No second OUI under this exact name was found across the site's the IEEE MA-L registry, the IEEE MA-M registry, or the IEEE MA-S registry registries, so this is a single-assignment vendor entry rather than a consolidated multi-block one.

That registered address is not a shell mailing address: it matches an active, well-documented A.O. Smith plant described in local manufacturing and chamber-of-commerce sources as roughly 1 million square feet with 400+ employees, one of the largest water heater plants in North America, producing commercial gas/electric water heaters, residential gas water heaters, and copper tube boilers.

Product context independently supports a networking use for this OUI: A.O. Smith sells iCOMM, a commercial water-heater remote-monitoring and connectivity platform with iOS/Android apps, and offers WiFi-enabled residential lines (Signature/Energy Smart) controlled through the same app ecosystem. A third-party open-source client, py-aosmith, implements an API against A.O. Smith's cloud platform for these iCOMM-enabled units, corroborating that they are genuine connected appliances with a documented API rather than only marketing language.

As of an August 2026 search, no CVE naming A.O. Smith or its water heater/iCOMM products appears in the NVD, and no CISA ICS advisory names A.O. Smith. Both are sourced negatives, not proof no vulnerability has ever been reported elsewhere for these products.

Device class

Networked water heaters — commercial iCOMM-enabled units and residential WiFi-enabled (Signature/Energy Smart) lines [Confirmed] — hotwater.com, aosmithconnect.com

Parent company

A.O. Smith Corporation (NYSE: AOS), Milwaukee, WI — publicly traded, founded 1874 [Confirmed] — en.wikipedia.org/wiki/A._O._Smith

Also seen on

commercial remote-monitoring/connectivity apps for water heaters (iCOMM) [Confirmed] — hotwater.com/resources/mobile-apps.html

Third-party corroboration

py-aosmith, an open-source API client for iCOMM-enabled water heaters [Confirmed] — pypi.org/project/py-aosmith

Not to be confused with

unrelated "Smith"-named registrants in the same registries (Smiths US Innovation LLC; Smith Meter, Inc. under shared MA-S bases; Baldor Electric Company) [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry

Known vulnerabilities

none found as of an August 2026 NVD/CISA ICS advisory search [Likely] — nvd.nist.gov/vuln, cisa.gov/news-events/ics-advisories

IEEE assignment

0C:84:11 → A.O. Smith Water Products, registered McBee, SC, US [Confirmed] — the IEEE MA-L registry 0C8411

Registry / block size

MA-L (24-bit OUI); single confirmed block under this exact name [Confirmed] — the IEEE MA-L registry, the IEEE MA-M registry, the IEEE MA-S registry (no additional matches)

HQ / registrant address

25589 Hwy 1, McBee, SC 29101, US [Confirmed] — the IEEE MA-L registry 0C8411

Parent company

A.O. Smith Corporation (NYSE: AOS), Milwaukee, WI, founded 1874 [Confirmed] — https://en.wikipedia.org/wiki/A._O._Smith

Company status

active — operating manufacturing facility described in current local/industry coverage [Confirmed] — https://scfuturemakers.com/behind-the-scenes-innovation-and-dedication-at-a-o-smiths-mcbee-facility/, https://www.southcarolinamanufacturing.com/lean-manufacturing-leadership-a-winning-formula-at-ao-smith-mcbee/

Device types

commercial and residential water heaters, connected/IoT variants (iCOMM, WiFi-enabled lines) [Confirmed] — https://www.hotwater.com/resources/mobile-apps.html, https://www.aosmithconnect.com/

Notable products

iCOMM remote-monitoring platform; WiFi-enabled residential water heaters (Signature/Energy Smart) [Confirmed] — https://www.hotwater.com/resources/mobile-apps.html

Third-party API corroboration

py-aosmith (PyPI), an unofficial client for iCOMM-enabled water heaters [Confirmed] — https://pypi.org/project/py-aosmith/

Registration date

Unknown — IEEE's public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) publishes no assignment/registration date for this or any OUI [Confirmed] — the IEEE MA-L registry

Security history

no CVE or CISA ICS advisory naming A.O. Smith found as of an August 2026 search [Likely] — https://nvd.nist.gov/vuln, https://www.cisa.gov/news-events/ics-advisories

Related vendors

A.O. Smith Corporation (parent); no relation to Smiths US Innovation LLC, Smith Meter Inc., or Baldor Electric Company despite shared "Smith" name fragments [Confirmed] — the IEEE MA-M registry, the IEEE MA-S registry