Verilink Corporation — 5 prefixes (MA-L)

A MAC address beginning with one of five prefixes — 00:20:51, 00:A0:6A, A0:6A:00, 00:C0:E6, or 00:E0:75 — belongs to Verilink Corporation, typically seen on carrier and enterprise WAN-edge access equipment such as CSU/DSUs, integrated access devices (IADs), Optical Ethernet access products, and multi-link/application routers.

Verilink was a California-founded (1982) telecom equipment maker, publicly traded as NASDAQ: VRLK, later headquartered at 127 Jetplex Circle, Madison, AL — the address on all five of its IEEE registrations. Its flagship line, WANsuite, spanned 14 models (5130–7205) of carrier-access hardware.

The company acquired Larscom Incorporated in 2004, linking the two vendors' OUI histories under one corporate lineage. Verilink filed for Chapter 11 bankruptcy in April 2006, was bought out of bankruptcy by SCS Fund for roughly $5.25M, and shortly after had its broadband-access portfolio (Verilink plus Larscom) acquired by Verso Technologies Inc. for $5.8M in stock.

No Verilink-specific CVE or vendor security advisory was found; that is a sourced absence, not a claim of verified safety. Given the company has been defunct since 2006, any device presenting one of these prefixes today is legacy infrastructure rather than actively maintained hardware.

IEEE assignment

5 prefixes → Verilink Corporation, registered Madison, AL, US [Confirmed] — the IEEE MA-L registry

Registry / block size

MA-L (24-bit OUI); 5 IEEE prefixes [Confirmed] — the IEEE MA-L registry lines 6285, 29467, 29940, 37993, 38079

HQ / country

127 Jetplex Circle, Madison, AL 35758, US [Confirmed] — the IEEE MA-L registry

Company status

defunct — Chapter 11 bankruptcy April 2006; broadband-access portfolio acquired by Verso Technologies Inc. June 2006 [Confirmed] — https://www.eetimes.com/verilink-files-bankruptcy-slashes-workforce/, https://www.lightreading.com/cable-technology/verso-buys-verilink-for-5-8-million

Device types

CSU/DSUs, IADs, Optical Ethernet access products, multi-link/application routers [Confirmed] — https://www.data-connect.com/verilink_wansuite.htm, SEC 10-K

Notable products

WANsuite (14 models, 5130-7205) [Confirmed] — https://www.data-connect.com/verilink_wansuite.htm

Verified prefixes (all MA-L, Verilink Corporation)

00:20:51, 00:A0:6A, A0:6A:00, 00:C0:E6, 00:E0:75 [Confirmed] — the IEEE MA-L registry

Company history

Founded California 1982; NASDAQ: VRLK; HQ later Madison, AL (matches registry address); acquired Larscom Incorporated 2004; filed Chapter 11 bankruptcy April 2006 (N.D. Alabama); bought out of bankruptcy by SCS Fund (~$5.25M, June 2006); broadband-access portfolio (Verilink+Larscom) then acquired by Verso Technologies Inc. for $5.8M in stock [Confirmed] — https://www.eetimes.com/verilink-files-bankruptcy-slashes-workforce/, https://www.channelpartnersonline.com/2006/04/10/verilink-files-bankruptcy-fires-company-heads/, https://www.lightreading.com/cable-technology/verso-buys-verilink-for-5-8-million

Security / CVE status

no Verilink-specific CVE or vendor advisory found [Unknown] — sourced null, not a claim of verified safety

OUI registration date

not published by IEEE for any of the 5 prefixes; no third-party "date registered" should be attributed to IEEE [Confirmed] — the IEEE MA-L registry

Related vendors

Larscom Incorporated (acquired by Verilink 2004), Verso Technologies Inc. (acquired Verilink's broadband-access portfolio 2006) [Confirmed] — https://www.lightreading.com/cable-technology/verso-buys-verilink-for-5-8-million

Analyst note

Five MA-L blocks plus an identifiable company with product and corporate history clear the substance bar for a standalone vendor entry — this is not a bare single-OUI shell registration [Confirmed] — synthesis of R1-registry + W1-web angles