Seagate Cloud Systems Inc — 4 prefixes (MA-L)

Seagate Cloud Systems Inc is the enterprise-storage arm of Seagate Technology, holding four IEEE MA-L (large block) OUI prefixes: 00-50-13, 00-50-CC, 00-90-F1, and 00-C0-FF. Each MA-L block covers a 24-bit OUI (~16.7 million addresses), so consolidating the four prefixes into a single vendor entry is far more useful than minting four near-identical per-prefix pages. The entity is the corporate successor to Dot Hill Systems — a Longmont, Colorado RAID-storage maker Seagate acquired in late 2015 — and it absorbed the storage-systems business from Seagate's earlier Xyratex acquisition (completed April 2014). That lineage explains the two registry addresses on file: the Longmont, CO addresses (used by 00-50-13 and 00-50-CC) reflect Dot Hill's Colorado operations, while the Carlsbad, CA address (used by 00-90-F1 and 00-C0-FF) reflects Dot Hill's former San Diego-area headquarters. The hardware behind these prefixes is enterprise data-center gear: RAID storage enclosures, SAN systems, NAS appliances, and high-performance-computing data enclosures aimed at financial-services, telecom, and HPC customers, including private-label/OEM enclosures and embedded server modules. Because these are datacenter appliances typically deployed on controlled internal network segments rather than the public internet, a Seagate Cloud Systems OUI on a globally-administered address reliably identifies genuine enterprise storage hardware, but no "Seagate Cloud Systems"-branded CVEs surfaced in this research pass — security advisories that exist are for distinct Seagate consumer/prosumer NAS lines, not this entity's enterprise enclosure portfolio. A common data-quality trap to avoid: the "22 April 1998" date shown on third-party lookup tools for OUI 00:C0:FF is a database artifact, not an IEEE fact — IEEE publishes no OUI registration dates at all.

IEEE assignment

4 prefixes → Seagate Cloud Systems Inc [Confirmed] — IEEE MA-L (lines 2122, 21858, 33691, 33692)

Registry / block size

MA-L (24-bit OUI); 4 prefixes, each ~16.7M addresses [Confirmed] — IEEE the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); the "1998" date on third-party tools for 00:C0:FF is a database artifact, not an IEEE fact. — https://maclookup.app/macaddress/00C0FF

Verified prefixes (all MA-L, Seagate Cloud Systems Inc)

00:50:13, 00:50:CC, 00:90:F1, 00:C0:FF [Confirmed] — IEEE the IEEE MA-L registry / https://hwaddress.com/company/seagate-cloud-systems-inc/

Registry addresses

6305 El Camino Real, Carlsbad CA 92009 US (00-C0-FF, 00-90-F1); 1351 S Sunset Street, Longmont CO 80501 US (00-50-CC); 7420 E. Dry Creek Parkway, Longmont CO 80503 US (00-50-13) [Confirmed] — IEEE the IEEE MA-L registry / https://maclookup.app/macaddress/00C0FF

HQ / country

Longmont, CO, US (primary OUI registrant locale; Carlsbad CA also on file) [Confirmed] — https://hwaddress.com/company/seagate-cloud-systems-inc/

Parent company

Seagate Technology Holdings plc; entity is the successor to Dot Hill Systems (acquired by Seagate late 2015) and incorporated Xyratex's storage-systems business (acquired April 2014) [Confirmed] — https://www.datacenterknowledge.com/archives/2013/12/30/seagate-acquires-xyratex / https://www.industrynet.com/listing/376038/seagate-cloud-systems-inc

Company status

active (operating subsidiary of Seagate Technology) [Likely] — https://www.industrynet.com/listing/376038/seagate-cloud-systems-inc

Device types

enterprise RAID storage enclosures, SAN systems, NAS appliances, HPC data enclosures, OEM/private-label storage enclosures and embedded server modules [Confirmed] — https://www.industrynet.com/listing/376038/seagate-cloud-systems-inc / https://investors.seagate.com/news/news-details/2014/Seagate-Rolls-Out-New-Cloud-Systems-And-Solutions-Strategy/default.aspx

Target sectors

financial services, telecommunications, high-performance computing (data-center storage) [Confirmed] — https://www.industrynet.com/listing/376038/seagate-cloud-systems-inc

Wireshark identifier

"SeagateCloud" for OUI 00:C0:FF [Confirmed] — https://maclookup.app/macaddress/00C0FF/mac-address-details

Website

https://www.seagate.com (parent; no active dedicated seagatecloudsystems.com microsite found) [Likely] — https://www.seagate.com/products/storage/data-storage-systems/

Allocated date

Unknown — IEEE publishes no registration dates for MA-L OUI assignments; no first-party date data exists [Unknown] — IEEE the IEEE MA-L registry

Security note

No "Seagate Cloud Systems"-branded CVEs surfaced; devices are enterprise datacenter enclosures typically on controlled internal segments. General Seagate advisories cover distinct consumer/prosumer NAS lines. [Likely] — research pass (no source CVE found)

Analyst note

A Seagate Cloud Systems OUI on a globally-administered address identifies genuine enterprise storage hardware; the four prefixes share two physical site addresses reflecting the Dot Hill / Xyratex acquisition lineage.