Juniper Networks — ~207 prefixes (MA-L)
Summary
- // what this is
- Juniper Networks is registered to MAC prefix
3C:94:D5and 206 more in the IEEE OUI database. When a device's MAC address begins with3C:94:D5, that block was registered by Juniper Networks — the OUI identifies the maker of the network hardware, which is not always the brand on the device. Juniper Networks was acquired; the registration remains on record with IEEE. - // analyst note
- A Juniper OUI marks carrier/enterprise routing, switching, firewall, or Mist wireless infrastructure — expected only on managed network gear, so an unexpected one merits investigation.
About this vendor.
Juniper Networks holds roughly 207 MA-L blocks registered as "Juniper Networks" at 1133 Innovation Way, Sunnyvale, CA. A naming caution: a separate, unrelated small registrant called "Juniper Systems" (a rugged-computing company in Logan, Utah, ~1 block) also exists and should not be conflated with the networking vendor. These OUIs appear on carrier and enterprise routers (MX/PTX), switches (EX/QFX), firewalls (SRX), and Mist AI wireless (Juniper acquired Mist Systems in 2019). The major corporate event: Juniper was acquired by Hewlett Packard Enterprise — the deal was announced 9 January 2024 at $40.00/share (an equity value of about $14 billion) and closed 2 July 2025 (cash consideration of about $13.4 billion at close; JNPR delisted from NYSE), following a 28 June 2025 DOJ antitrust settlement that required HPE to divest its Instant On campus/branch WLAN business and license Juniper's Mist AIOps source code. Juniper is now part of HPE Networking and a sibling to Aruba, but existing devices and IEEE records still carry the "Juniper Networks" registrant string, which should remain the live OUI mapping. For triage, a Juniper OUI marks carrier/enterprise routing, switching, firewall, or Mist wireless infrastructure — expected only on managed network gear, so an unexpected one merits investigation.
- IEEE assignment
- ~207 prefixes → Juniper Networks, registered Sunnyvale, CA, US [Confirmed] — IEEE MA-L
- Registry / block size
- MA-L; ~207 blocks [Confirmed assignment] — maclookup.app (IEEE-derived; count is a current third-party snapshot and drifts). 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); any "date registered" from third-party tools is a database artifact, not an IEEE fact.
- HQ / country
- 1133 Innovation Way, Sunnyvale, CA 94089, US [Confirmed] — IEEE MA-L
- Company status
- acquired by Hewlett Packard Enterprise — announced 2024-01-09 at $40.00/share (~$14B equity value); closed 2025-07-02 (~$13.4B cash consideration at close); JNPR delisted from NYSE [Confirmed] — SEC filings (JNPR 8-K, HPE 8-K/A), hpe.com, newsroom.juniper.net
- Device types
- carrier/enterprise routers, switches, firewalls, wireless (Mist) [Confirmed] — maclookup.app
- Notable products
- MX/PTX routers, EX/QFX switches, SRX firewalls, Mist AI wireless (Mist acquired 2019)
- Verified prefix sample
- 3C:94:D5, E4:F2:7C [Confirmed] — maclookup.app
- Special note
- Despite the HPE acquisition, existing devices and IEEE records still carry the "Juniper Networks" registrant string; new registrations may transition over time. DOJ settlement (2025-06-28) required divesting HPE Instant On WLAN and licensing Mist AIOps source code. Do not confuse with "Juniper Systems" (rugged handhelds, Logan, UT).[Confirmed] — maclookup.app/vendors/juniper-systems
- Related vendors
- Hewlett Packard Enterprise (parent since 2025-07-02); Mist Systems (acquired 2019); now sibling to Aruba within HPE Networking
- Analyst note
- A Juniper OUI marks carrier/enterprise routing, switching, firewall, or Mist wireless infrastructure — expected only on managed network gear, so an unexpected one merits investigation.