2 Save Energy Ltd ("OWL") — 44:37:19 (MA-L)

2 Save Energy Ltd holds a single IEEE MA-L assignment, 44:37:19, registered to an address in Sherborne St John, Hampshire, UK. Despite the one-OUI footprint, this is not a bare registry stub: the company traded publicly as "OWL," a well-known UK brand of wireless home and business energy monitors that shipped more than 1.1 million standalone electricity monitors before adding a cloud-connected "OWL Intuition" platform, a Smart Heating Control line launched in 2013, and solar-PV and water-monitoring products for corporate customers. UK Companies House records confirm the underlying legal entity (company no. 05626628), incorporated in November 2005 and dissolved in October 2024 — so any device still carrying this OUI predates the company's wind-down and should be treated as running on unsupported firmware/cloud services. A 2017 independent security writeup on OWL Intuition devices found unencrypted HTTP telemetry and, notably, device IDs that are literally the unit's MAC address, directly tying the OUI to real deployed hardware and giving the entry practical relevance beyond the registry line. A same-named but unrelated US company, Owl Labs (video-conferencing hardware, subject of a separate 2022 CVE series), must not be conflated with this UK energy-monitoring vendor.

vendor_name

2 Save Energy Ltd [Confirmed] — the IEEE MA-L registry; corroborated by the Wireshark manufacturer database

oui_assignment

44:37:19 [Confirmed] — the IEEE MA-L registry

registry_class

MA-L [Confirmed] — the IEEE MA-L registry

registered_address

The Annexe, Field House Barn, Sherborne St John, Hampshire, GB RG24 9LR [Confirmed] — the IEEE MA-L registry

independent_crosscheck

maclookup.app independently returns the same organization and address for 44:37:19 [Confirmed] — https://maclookup.app/macaddress/443719

date_registered

Unknown/null — IEEE's the IEEE MA-L registry publishes no assignment-date column; maclookup.app's displayed "17 March 2011" is a third-party database artifact, not an IEEE fact, and is not recorded here [Confirmed absence] — the IEEE MA-L registry (schema); https://maclookup.app/macaddress/443719

iana_reference

N/A — IEEE MA-L assignment, not an IANA-administered registry; left blank per policy [Confirmed]

company_identity

2 SAVE ENERGY LIMITED, UK Companies House no. 05626628, incorporated 17 Nov 2005, dissolved 22 Oct 2024, last registered office 8th Floor One, Temple Row, Birmingham B2 5LG [Confirmed] — https://find-and-update.company-information.service.gov.uk/company/05626628

brand_and_products

Traded as "OWL" — wireless electricity monitors (1.1M+ units sold), OWL Intuition cloud platform, Smart Heating Control (2013), solar-PV and water-monitoring products [Confirmed] — https://www.theowl.com/index.php/about-us/owl/

device_types

Consumer/SMB IoT energy and heating monitors (standalone + cloud-connected electricity monitors, heating controllers, PV/solar monitors, water-consumption monitors) [Confirmed] — https://www.theowl.com/index.php/about-us/owl/

security_context

No CVE on record for OWL/2 Save Energy specifically; an independent 2017 Hackaday writeup documents plaintext HTTP telemetry and a MAC-address-as-device-ID enumeration weakness in OWL Intuition's cloud service

[Confirmed non-CVE finding] — https://hackaday.com/2017/01/02/owl-insecure-internet-of-energy-monitors/

duplicate_candidates_ruled_out

Owl Labs (US, Meeting Owl video-conferencing hardware, subject of the separate CVE-2022-31459 series) is unrelated to 2 Save Energy Ltd despite the shared "OWL" name [Confirmed] — https://www.securityweek.com/owl-labs-patches-severe-vulnerability-video-conferencing-devices/

additional_oui_assignments

None found under "2 Save Energy" or the related trading name "Intuition Service Ltd" — single-OUI vendor [Confirmed] — the IEEE MA-L registry (registry text scan, no additional citation)

company_status

Dissolved 22 October 2024 [Confirmed] — https://find-and-update.company-information.service.gov.uk/company/05626628