Procter & Gamble Company — 2 prefixes (MA-L)

Procter & Gamble, the Cincinnati-based consumer-goods conglomerate behind brands like Tide, Gillette, and Pampers, holds two independent IEEE MA-L (OUI) blocks — 34:CB:1A and AC:DC:E5 — both registered to "Procter & Gamble Company" at the same corporate address, 2 Procter & Gamble Plaza, Cincinnati, OH 45202. Two separately-issued blocks under one registrant, plus P&G's identifiable public footprint (its own ARIN ASN AS11003, SEC filings, and documented enterprise IoT/OT initiatives with Microsoft and the OPC Foundation), together clear the bar for a real entity rather than a bare single-OUI shell registration. What remains unverified is what the addresses are actually used on: P&G is not a networking-hardware vendor, so no product page, security researcher writeup, or CVE ties either prefix to a specific shipped device. The more plausible reading — internal corporate/manufacturing-plant equipment self-assigned by P&G rather than a consumer product line — is a reasonable inference from company type, not a sourced fact, and is tagged accordingly below.

IEEE assignment

two MA-L blocks (34:CB:1A, AC:DC:E5) → Procter & Gamble Company [Confirmed] — the IEEE MA-L registry, the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 2 prefixes confirmed, no MA-M or MA-S blocks found for this vendor [Confirmed] — the IEEE MA-M registry (no match), the IEEE MA-S registry (no match)

HQ / registered address

2 Procter & Gamble Plaza, Cincinnati, OH 45202, US [Confirmed] — the IEEE MA-L registry, the IEEE MA-L registry; cross-checked in the Wireshark manufacturer database, the Wireshark manufacturer database (Wireshark the Wireshark manufacturer database DB, short name "ProcterGambl")

Company status

active, publicly-traded, identifiable major corporation [Confirmed] — https://www.pgcareers.com/us/en/pg-us-locations/headquarters

Company substance beyond bare registration

two independent OUI blocks under one registrant + a distinct public network footprint (own ARIN ASN AS11003; SEC filings) [Likely] — https://www.ipqualityscore.com/asn-details/AS11003/the-procter-and-gamble-company, https://www.sec.gov/Archives/edgar/data/0000080424/000008042411000051/sipshares.htm

Device types / product context

Unknown — no vendor product page, security research, or CVE ties either prefix to a specific device category; P&G's public IoT/OT coverage is enterprise manufacturing context, not a documented use of these specific OUIs [Unknown] — https://www.microsoft.com/en/customers/story/25077-procter-and-gamble-iot-operations, https://opcfoundation.org/wp-content/uploads/2025/01/OPC_SuccessStory-PG-finalweb.pdf

Registration dates

not applicable — IEEE's public the IEEE MA-L registry publishes no assignment/registration date for MA-L blocks; a third-party aggregator (maclookup.app) shows scrape-artifact dates (2019-08-21 for 34:CB:1A; 2016-09-22 for AC:DC:E5) that are database artifacts, not IEEE facts, and are not recorded as authoritative

[Confirmed] — https://maclookup.app/vendors/procter-gamble-company

Analyst note

two OUI assignments plus P&G's independently-documented network presence clear the abstain-on-shells bar; the specific device/product use of these prefixes is inferential (likely internal/enterprise or manufacturing-plant equipment, not a shipped consumer product), not sourced.