Advanced Computer Applications — 00:20:7D (MA-L)

The OUI 00:20:7D is a single MA-L block registered to "ADVANCED COMPUTER APPLICATIONS," with the registry address 107 Penns Trail, Newtown, PA 18940, US. The block is the standard 24-bit MA-L allocation, covering 00:20:7D:00:00:00 through 00:20:7D:FF:FF:FF (~16.77 million addresses). Beyond the IEEE assignment itself, this is a low-data vendor: web research turned up no active or archived company website, no product catalog, no device-type listings, and no press or directory profile that would let us name the hardware these addresses shipped on. The registered address is a real commercial property in Newtown, but no current tenant matching the company name was identifiable, which — together with the absence of any modern footprint — is consistent with a small 1990s-era hardware OEM that is now defunct or dormant. The 00:20:xx range belongs to the early IEEE OUI allocations, fitting that timeline. No security or threat-intelligence associations were found for this prefix: it does not appear in CVE databases, malware/botnet corpora, or spoofed-MAC campaign reports. The usual OUI caveats apply — a globally-administered 00:20:7D address identifies hardware that carried this assignment, but says nothing about whether the original vendor still exists, and locally-administered/randomized MACs never resolve here. Note that the "1998" date some third-party lookup tools show is a database artifact, not an IEEE fact: IEEE publishes no registration dates for MAC prefixes.

IEEE assignment

00-20-7D → ADVANCED COMPUTER APPLICATIONS [Confirmed] — IEEE MA-L (line 37872; mirrored https://api.maclookup.app/v2/macs/00207D, https://hwaddress.com/?q=00-20-7D)

Registry / block size

MA-L (24-bit OUI); one prefix, 00:20:7D:00:00:00–00:20:7D:FF:FF:FF (~16.77M addresses) [Confirmed] — IEEE MA-L / https://api.maclookup.app/v2/macs/00207D. Not present in MA-M (the IEEE MA-M registry) or MA-S (the IEEE MA-S registry).

Registered address / country

107 Penns Trail, Newtown, PA 18940, US [Confirmed] — IEEE MA-L / https://api.maclookup.app/v2/macs/00207D

Allocation date

Unknown [Unknown] — IEEE publishes NO registration/assignment dates for MA-L OUI blocks; no date field exists in the IEEE MA-L registry record. The "April 22, 1998" shown by some third-party lookup tools is a database artifact, not an IEEE-sourced fact, and must not be attributed to IEEE.

Company status

Likely defunct or dormant — no active website, archived site, LinkedIn profile, product listing, or news reference found; registered address is a real commercial property with no identifiable current tenant of this name [Likely] — web research (single-angle; https://www.loopnet.com/property/107-penns-trl-newtown-pa-18940/42017-29010095/ confirms the property only)

Device types

Unknown [Unknown] — no product catalog, product names, or device-category data found in any networking-device database, IoT classification, or security corpus

Vendor website

Unknown [Unknown] — no active or archived vendor website located through web search

Security context

No threat-intelligence, CVE, malware/botnet, or spoofed-MAC associations found for 00:20:7D [Likely] — web research (single-angle; absence of evidence, not audited refutation)

Analyst note

A globally-administered 00:20:7D address identifies hardware bearing this assignment, but the originating vendor appears no longer active; randomized/locally-administered MACs do not resolve to this OUI. Treat this as a registry-fact entry with no enriched product context.