Beijing Ereneben Information Technology Limited Shenzhen Branch — 2 prefixes (MA-L)

A MAC address starting with 1C:5F:FF or 40:88:E0 belongs to Beijing Ereneben Information Technology Limited, Shenzhen Branch — typically seen on EBEN-brand Android handwriting-tablet PCs and related consumer electronics rather than networking infrastructure.

Both prefixes are registered under the identical registrant name and street address in Shenzhen's Luohu District, indicating a single active branch office rather than two unrelated firms. IEEE's MA-L registry lists no assignment date for either block, and any "registered on" date shown by third-party lookup tools is a database artifact, not an IEEE fact.

Independent product corroboration comes from DeviceAtlas, which lists eight device models under the vendor tag "Ereneben" — EBEN A2, EBEN M2, EBEN T5, EBEN T6, EBEN T7-TD, K8s, T8, and T9 — consistent with the Chinese "E人E本/EBEN" handwriting-tablet product line.

The registrant name plausibly traces to 北京壹人壹本信息科技有限公司 (Beijing YirenYiben, English brand "E人E本"/EBEN), a company founded in 2009 that built ARM+Android handwriting tablets, received Lenovo investment in 2010, and was acquired by Tsinghua Tongfang for roughly ¥1.45 billion in 2013. This identity bridge rests on name transliteration and matching product-line naming across independent third-party sources rather than a directly-read primary source, so it is tagged Likely, not Confirmed.

A third, textually distinct registrant name ("Beijing Ereneben lnformation Technology Limited", OUI 88:C3:6E) shares the same building complex but a different suite and postal code, and is NOT folded into this entry — it is kept as a separate vendor pending confirmation of a shared corporate entity.

IEEE assignment

2 prefixes → Beijing Ereneben Information Technology Limited Shenzhen Branch / Co.,Ltd Shenzhen Branch, registered Shenzhen, Guangdong, CN [Confirmed] — the IEEE MA-L registry 1C5FFF, the IEEE MA-L registry 4088E0

Registry / block size

MA-L (24-bit OUI); 2 assignments under the Shenzhen Branch name [Confirmed] — the IEEE MA-L registry

HQ / country

Room 14A, Building A, Honglong Central Plaza, No.3001, Heping Road, Luohu District, Shenzhen City, Guangdong, CN 518001 [Confirmed] — the IEEE MA-L registry 1C5FFF

Company status

Unknown — no primary source (eben.cn refused connection; Crunchbase 403'd) confirms current operating status [Unknown]

Device types

Android handwriting-tablet PC (EBEN brand) [Confirmed] — https://deviceatlas.com/device-data/devices/ereneben

Notable products

EBEN A2, EBEN M2, EBEN T5, EBEN T6, EBEN T7-TD, K8s, T8, T9 [Confirmed] — https://deviceatlas.com/device-data/devices/ereneben

Verified sample prefixes

1C:5F:FF, 40:88:E0 [Confirmed] — the IEEE MA-L registry

Registration dates

Unknown — IEEE publishes no assignment date for MA-L blocks; maclookup.app's displayed "initially registered on 01 May 2012" for 1C:5F:FF is a third-party database timestamp, not an IEEE fact [Confirmed] — https://maclookup.app/search/result?mac=1C5FFF, the IEEE MA-L registry

Underlying company identity

Likely — 北京壹人壹本信息科技有限公司 (E人E本/EBEN), founded 2009, ARM+Android handwriting tablets, Lenovo-invested 2010, acquired by Tsinghua Tongfang for ~¥1.45bn in 2013, divestment reported 2024 [Likely] — https://baike.baidu.com/item/%E5%8C%97%E4%BA%AC%E5%A3%B9%E4%BA%BA%E5%A3%B9%E6%9C%AC%E4%BF%A1%E6%81%AF%E7%A7%91%E6%8A%80%E6%9C%89%E9%99%90%E5%85%AC%E5%8F%B8/6040158, https://www.sfccn.com/2024/5-23/0NMDE0NDlfMTkyMDg0NQ.html

Related vendors

OUI 88:C3:6E ("Beijing Ereneben lnformation Technology Limited") — related registrant name/building complex, textually distinct name and different suite/postal code, NOT merged into this entry [Confirmed] — the IEEE MA-L registry 88C36E

Analyst note

identification for this entry covers only the two "Shenzhen Branch" prefixes (1C:5F:FF, 40:88:E0); do not extend it to OUI 88:C3:6E without confirming a shared corporate entity.