MRV Communications (Networks) LTD — 4 prefixes (MA-L)

MRV Communications (Networks) LTD is the Israel-based engineering arm of MRV Communications, Inc., the Chatsworth, California-headquartered network-equipment maker founded in 1988 and once listed on NASDAQ as MRVC. The Yokneam facility anchors four separate MA-L OUI blocks registered under the "(Networks) LTD" name, spanning carrier Ethernet demarcation switches (the OptiSwitch family: OS606, OS904/906/912, OS9124, OS9244), CWDM/DWDM optical transport chassis (LambdaDriver), and Linux-based out-of-band console/terminal servers (InReach LX-4000/LX-8000) — the last validated under a published NIST FIPS 140-2 security policy, confirming real government/enterprise deployment. ADVA Optical Networking acquired MRV Communications for roughly $69 million in a deal that closed August 2017; ADVA itself was later absorbed into ADTRAN Holdings via a 2022 merger, so the MRV brand and its legacy hardware now sit under ADTRAN's corporate umbrella rather than an independent company. Two similarly-named registry entries — the misspelled "MRV Comunications" (2 blocks) and the separately-registered, US-domiciled "MRV Communications, Inc." (1 block, Chatsworth) — are distinct legal registrations and are excluded from this consolidated entry.

IEEE assignment

4 MA-L prefixes → "MRV Communications (Networks) LTD" (one row spells it "MRV Communication," singular), Yokneam, Israel [Confirmed] — the IEEE MA-L registry (lines 4090, 4971, 26232, 28902)

Prefixes in scope

00:0F:BD, 00:16:69, 3C:A7:2B, A4:60:32 [Confirmed] — the IEEE MA-L registry

HQ / country

P.O Box 614, Yokneam, Israel / Hayetzira 6, Yokneam, Israel (registry addresses); the 00:16:69 row anomalously lists country "US" despite the identical Israeli street address — treated as a registry data artifact, not a real US location

[Confirmed, artifact flagged] — the IEEE MA-L registry (line 4971)

Excluded near-matches (different legal registrations, not part of this entry)

"MRV Comunications" (misspelled, no "Networks" token) at 44:37:08 and DC:4D:23; "MRV Communications, Inc." (US entity, Chatsworth, CA) at 00:20:1A [Confirmed] — the IEEE MA-L registry (lines 18167, 26400, 37864)

Company status

parent MRV Communications, Inc. (NASDAQ: MRVC, founded 1988) was acquired by ADVA Optical Networking for ~$69M, deal closed 2017-08-14; ADVA was later absorbed into ADTRAN Holdings via a 2022 merger — MRV no longer operates as an independent public company

[Confirmed] — prnewswire.com, cablinginstall.com

Device types

carrier Ethernet access/demarcation switches (OptiSwitch), CWDM/DWDM optical transport (LambdaDriver), Linux-based out-of-band console/terminal servers (InReach LX-series) [Confirmed] — lightreading.com, lightwaveonline.com, csrc.nist.gov

Notable products

OptiSwitch OS606, OS904/906/912, OS9124, OS9244; LambdaDriver; InReach LX-4000/LX-8000 [Confirmed] — lightreading.com, lightwaveonline.com, csrc.nist.gov (FIPS 140-2 security policy for InReach), github.com/librenms/librenms (community deployment report)

Registration date

Unknown — IEEE's public OUI data (the IEEE MA-L registry: Registry, Assignment, Organization Name, Organization Address) publishes no assignment/registration date for any of these four blocks; a third-party "date registered" would be a database artifact, not an IEEE fact, and is not recorded here

[Confirmed absence] — the IEEE MA-L registry

Security/CVE exposure

cvedetails.com hosts a dedicated product page for "Mrv Communications In Reach Lx 4000s" (vendor_id 3198), implying tracked CVEs exist for that console-server line, but the page returned HTTP 403 on fetch and no specific CVE IDs could be confirmed; no MRV-specific CVE was independently found via general search either

[Unknown] — cvedetails.com/product/5616

Related vendors

ADVA Optical Networking (acquirer, 2017); ADTRAN Holdings (ultimate parent via 2022 ADVA merger)

Analyst note

InReach console servers are intentionally remote/out-of-band-facing by design and carry the higher exposure profile of the three product lines; OptiSwitch and LambdaDriver are managed carrier transport gear not typically internet-facing.