Westell Technologies — DSL/broadband CPE (5 MA-L prefixes)

A MAC address starting with 00:0F:DB, 00:60:0F, 00:18:3A, 0C:D5:02, or 00:23:97 belongs to Westell Technologies Inc., typically seen on a DSL or broadband customer-premises device such as a modem, gateway, or router.

Westell registers five separate MA-L (24-bit) OUI blocks, all under the same registrant name and address, which is itself a signal of a real, ongoing hardware manufacturer rather than a one-off registration. Founded in 1980 and later publicly traded (NASDAQ: WSTL), Westell built its business supplying DSL customer-premises equipment directly to telcos and ISPs.

At its peak Westell was reportedly the second-largest US DSL modem manufacturer, and by some accounts the last domestic DSL-modem maker before shifting to outsourced manufacturing around 2007. Its equipment shipped under carrier branding, including SBC/AT&T WireSpeed and ProLine ADSL routers and the Verizon FiOS-era Westell 9100 gateway.

Westell sold its Communication Network Solutions line — the modem, gateway, and router business that produced these OUI-bearing devices — to NETGEAR in April 2011, while Westell Technologies itself continued operating. Consumer-facing Westell routers are widely documented as shipping with weak factory-default credentials (e.g. admin/password, or admin/password1 on the Westell 9100), though no CVE/NVD-listed remote-management vulnerability was confirmed in this pass — that gap reflects an unchecked source, not a negative finding.

IEEE assignment

5 MA-L prefixes → Westell Technologies Inc., registered 750 N Commons Dr, Aurora, IL, US 60504 [Confirmed] — the IEEE MA-L registry (lines 10609, 26368, 26369, 28006, 34439)

Registry / block size

MA-L (24-bit OUI); 5 IEEE prefixes, present only in the IEEE MA-L registry (not the IEEE MA-M registry or the IEEE MA-S registry) [Confirmed] — the IEEE MA-L registry; Grep of the cached registry snapshots

HQ / country

750 N Commons Dr, Aurora, IL 60504, US (registry address) [Confirmed] — the IEEE MA-L registry

Company status

active as Westell Technologies, Inc. (NASDAQ: WSTL); sold its CPE (modem/gateway/router) product line to NETGEAR in April 2011 [Confirmed] — https://en.wikipedia.org/wiki/Westell, https://www.westell.com/about/company-timeline

Device types

DSL modems, gateways, routers, DSL bridges [Confirmed] — https://www.westell.com/products, https://www.thinkbroadband.com/broadband-hardware-reviews/42-westell-proline-6000-2

Notable products

SBC/AT&T WireSpeed and ProLine ADSL router/bridge series, Westell 6100G, Verizon FiOS-era Westell 9100 [Confirmed] — https://hardforum.com/threads/verizon-westell-dsl-modem.1099763/, https://blogs.n1zyy.com/n1zyy/2009/11/23/fios-and-the-westell-9100

Verified sample prefixes (all MA-L, Westell Technologies Inc.)

00:0F:DB, 00:60:0F, 00:18:3A, 0C:D5:02, 00:23:97 [Confirmed] — the IEEE MA-L registry

Company history

Founded October 1980 (Willowbrook, IL); described as second-largest US DSL modem manufacturer at its peak, reportedly the last domestic DSL-modem manufacturer before outsourcing manufacturing in 2007 [Likely — secondary business-history sources] — https://www.fundinguniverse.com/company-histories/westell-technologies-inc-history/, https://www.company-histories.com/Westell-Technologies-Inc-Company-History.html, https://www.sec.gov/Archives/edgar/data/0001002135/000095013796001071/0000950137-96-001071.txt

Registration date

Unknown — IEEE's public OUI data publishes no assignment/registration date; not recorded [Unknown] — the IEEE MA-L registry (no date column)

Security note

Weak factory-default credentials widely reported on consumer models (admin/password general default; admin/password1 on Westell 9100); one secondary source cites a study naming the Westell 6100G as tested/vulnerable to default-credential attack. No CVE/NVD entry confirmed in this pass — treat as unchecked, not absent. [Likely] — https://www.tech-faq.com/westell-default-password.html, https://www.comparitech.com/blog/information-security/default-password-routers-study/

Analyst note

Five independent MA-L assignments plus a documented multi-decade CPE manufacturing history make this a substantive vendor entry, not a bare shell registration.