Adobe Systems, Inc. — 00:40:18 (MA-L)

A MAC address starting with 00:40:18 belongs to Adobe Systems, Inc., registered as a single IEEE MA-L (24-bit OUI) block. No specific hardware product or device class is documented for this prefix — the most defensible read is that the block was used historically for equipment on Adobe's own corporate network rather than for a shipped consumer or networking product.

Adobe Systems, Inc. — renamed Adobe Inc. in 2018 — is a publicly traded (NASDAQ: ADBE) American software company founded in December 1982 by John Warnock and Charles Geschke. The registered address on this OUI, 1585 Charleston Road, Mountain View, CA 94043, matches Adobe's historic headquarters before its later move to San Jose, corroborating that the registration is genuinely Adobe's and not a coincidental name match.

Adobe's core business is publishing and creative software (Photoshop, Acrobat, PDF, Illustrator, Flash), not networking hardware, so this OUI does not correspond to any known shipped hardware line the way a router or NIC vendor's block would. Vendor lookup tools, scanner fingerprint databases, and general web sources, checked as of an August 2026 search, turned up no specific device or security association tied to this prefix.

IEEE's public OUI registry publishes no assignment or registration date for any MAC prefix, including this one. Third-party lookup tools display a date such as a 2000 initial-registration figure, but that is a database artifact from the tool's own scrape history, not an IEEE fact, and is not reproduced here.

Vendor

Adobe Systems, Inc. (now Adobe Inc.) [Confirmed] — the IEEE MA-L registry 004018

MAC prefix / OUI

00:40:18 [Confirmed] — the IEEE MA-L registry 004018

Registry class

MA-L (24-bit OUI, /24 block) [Confirmed] — the IEEE MA-L registry 004018

Device class

Unknown — no specific hardware product identified; most plausibly internal corporate network equipment [Likely] — https://maclookup.app/macaddress/004018/mac-address-details

Total OUI assignments

1 — no additional blocks found in the IEEE MA-S registry, iab.csv, or cid.csv [Confirmed] — the IEEE MA-L registry; the IEEE MA-S registry

IEEE assignment

00:40:18 → ADOBE SYSTEMS, INC., registered Mountain View, CA, US [Confirmed] — the IEEE MA-L registry 004018

Registry / block size

MA-L (24-bit OUI); single IEEE prefix found for this registrant [Confirmed] — the IEEE MA-L registry 004018; the IEEE MA-S registry (0 matches)

HQ / registered address

1585 Charleston Road, Mountain View, CA 94043, US (historic Adobe HQ; company HQ later moved to San Jose) [Confirmed] — the IEEE MA-L registry 004018

Company status

active, publicly traded (NASDAQ: ADBE), renamed Adobe Inc. in 2018 [Confirmed] — https://en.wikipedia.org/wiki/Adobe_Inc.

Founded

December 1982 by John Warnock and Charles Geschke [Confirmed] — https://en.wikipedia.org/wiki/Adobe_Inc.

Device types

Unknown — no specific hardware product or device class documented for this OUI [Unknown] — https://maclookup.app/macaddress/004018/mac-address-details

Notable products

Photoshop, Acrobat, PDF, Illustrator, Flash (software line; not tied to this OUI specifically) [Confirmed] — https://en.wikipedia.org/wiki/Adobe_Inc.

Registration date

Unknown — IEEE publishes no assignment/registration date for MAC prefixes [Confirmed] — the IEEE MA-L registry (no date column)

Security association

none found, as of an August 2026 search [Confirmed] — general web search

Analyst note

This OUI identifies Adobe Systems, Inc. as the registrant, but no shipped hardware product has been identified for it; a MAC in 00:40:18 most plausibly traces to equipment on Adobe's own internal network rather than a consumer device. Treat device-type as Unknown.