Network Equipment Technologies, Inc. — 3 prefixes (MA-L)

A MAC address beginning with 00:30:E1, 00:10:23, or 00:80:B2 belongs to Network Equipment Technologies, Inc. (NET), a Fremont, California telecom-equipment maker, typically seen on carrier and enterprise WAN gear rather than consumer devices.

All three blocks are dedicated MA-L /24 registrations tied to the same 6900 Paseo Padre Parkway, Fremont, CA address, filed under three slightly different legal-name spellings ("Network Equipment Technologies, Inc.", "Network Equipment Technologies", "NETWORK EQUIPMENT TECHNOLOGIES"). None are sub-allocations of a shared IEEE-administered base — each is a full block NET holds outright.

NET built T-1/T-3 multiplexers (the IDNX line) starting in the early 1980s and later shipped the Promina family of multiservice WAN switches (TDM/ATM/frame-relay/IP), plus NX-series network exchanges, VX-series voice/VoIP gateways, and UX-series enterprise session border controllers. It acquired Quintum Technologies' VoIP access-switching line in December 2007 for roughly $41M. Its founding year is most often cited as 1983 in secondary business-history sources; a primary SEC 10-K could not be retrieved to confirm that specific year, so it is treated as likely rather than confirmed. NET IPO'd on NYSE (ticker NWK) in January 1987 and moved to NASDAQ under the same ticker in April 2009.

NET is no longer an independent company. Sonus Networks agreed to acquire it in June 2012 (~$42M) and closed the deal that August; Sonus itself merged with GENBAND in 2017 to form Ribbon Communications, today's successor entity. net.com does not currently resolve, consistent with there being no standalone active NET web presence.

IEEE's public OUI data (the IEEE MA-L registry) publishes no assignment or registration date for any of the three blocks — only Registry, Assignment, Organization Name, and Organization Address. A third-party lookup tool shows a "registered" date for 00:30:E1, but that is a database artifact of that tool, not an IEEE fact, and is not reproduced here as an IEEE date.

IEEE assignment

3 prefixes → Network Equipment Technologies, Inc. (and two org-name variants), registered Fremont, CA, US [Confirmed] — the IEEE MA-L registry 0030E1, the IEEE MA-L registry 001023, the IEEE MA-L registry 0080B2

Registry / block size

MA-L (24-bit OUI); 3 dedicated IEEE prefixes (~50.3M addresses total), each a full /24 held outright — not a sub-allocation of a shared IEEE base [Confirmed] — the IEEE MA-L registry 0030E1, the IEEE MA-L registry 001023, the IEEE MA-L registry 0080B2. NOTE: IEEE's public OUI data publishes no assignment/registration date; any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

6900 Paseo Padre Parkway, Fremont, CA 94555, US [Confirmed] — the IEEE MA-L registry 0030E1

Company status

Acquired; no longer an independent company — Sonus Networks announced acquisition June 19, 2012, closed August 2012; Sonus later merged with GENBAND (2017) to form Ribbon Communications [Confirmed] — https://ribboncommunications.com/company/media-center/press-releases/sonus-networks-announces-definitive-agreement-acquire-network-equipment-technologies

Device types

T-1/T-3 multiplexers (IDNX), multiservice WAN switches (Promina: TDM/ATM/frame-relay/IP), NX-series network exchanges, VX-series voice/VoIP gateways, UX-series enterprise session border controllers [Confirmed] — https://www.yumpu.com/en/document/view/3822507/promina-overview-network-equipment-technologies-inc, https://www.sec.gov/Archives/edgar/data/0000752431/000075243108000042/net2008052810k.htm

Notable products

IDNX, Promina, NX Series, VX Series, UX Series; Quintum-derived VoIP access switches post-2007 acquisition [Confirmed] — https://www.sec.gov/Archives/edgar/data/0000752431/000075243108000042/net2008052810k.htm, https://njbiz.com/quintum-technologies-agrees-to-net-buyout-agreement/, https://www.rttnews.com/410546/network-equipment-technologies-signs-deal-to-buy-quintum-technologies-issues-fy08-revenue-estimates-quick-facts.aspx

Verified sample prefixes (all MA-L, Network Equipment Technologies)

00:30:E1, 00:10:23, 00:80:B2 [Confirmed] — the IEEE MA-L registry 0030E1, the IEEE MA-L registry 001023, the IEEE MA-L registry 0080B2

Founding / IPO history

founded early 1980s, commonly cited as 1983 in secondary business-history sources (a primary SEC 10-K could not be retrieved to confirm the exact year); IPO on NYSE (ticker NWK) January 1987; moved to NASDAQ under NWK April 24, 2009 [Likely] — https://historyofcomputercommunications.info/section/13.24/Network-Equipment-Technologies/, https://www.cbinsights.com/company/network-equipment-technologies

Special note

IEEE's public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) contains no assignment/registration date for 0030E1, 001023, or 0080B2. A third-party tool (maclookup.app) surfaces a "registered" date for 0030E1; that is a database artifact of the tool, not an IEEE fact, and is not published here as one.

[Confirmed] — https://maclookup.app/search/result?mac=00-30-E1

Related vendors

Quintum Technologies (acquired December 2007, folded into UX Series); successor entity Ribbon Communications (via Sonus Networks' 2012 acquisition of NET and 2017 Sonus/GENBAND merger) [Confirmed] — https://ribboncommunications.com/company/media-center/press-releases/sonus-networks-announces-definitive-agreement-acquire-network-equipment-technologies, https://njbiz.com/quintum-technologies-agrees-to-net-buyout-agreement/

Security note

No CVE is recorded in NVD or CVEdetails for Network Equipment Technologies or its IDNX/Promina/NX/VX/UX product lines as of an August 2026 search of both databases [Confirmed] — https://nvd.nist.gov/vuln/search, https://www.cvedetails.com/vendor-search.php

Analyst note

All three MA-L blocks are dedicated /24s registered directly to this one company under name-spelling variants, not sub-allocations of a shared IEEE base — a MAC in any of the three ranges reliably indicates NET-manufactured carrier/enterprise gear, though the company itself has been folded into Ribbon Communications since 2012 and no longer ships new hardware under the NET name. [Confirmed]