GlobalTop Technology Inc. — 2 prefixes (MA-L)

A MAC address beginning 00:09:83 or 00:1C:D9 belongs to GlobalTop Technology Inc., a Taiwan-based GNSS/GPS embedded-module maker — typically seen on a GPS or multi-GNSS receiver module built into a tracker, drone, IoT device, or automotive/industrial product, not on a single consumer-branded gadget.

Both blocks register to essentially the same entity at the same Tainan address (16 Nan-Ke 9th Rd., Science-Based Industrial Park, ShanHua, Tainan county, TW 741), under two near-identical name spellings: "GlobalTop Technology, Inc." (00:09:83) and "GlobalTop Technology Inc." (00:1C:D9). Two independent MA-L assignments to one registrant is itself a signal of a real, ongoing operation rather than a one-off shell registration.

GlobalTop's own site (gtop-tech.com) shows an active GNSS/GPS product line — standalone GPS modules, multi-GNSS modules, GPS-with-antenna modules, and evaluation/firmware kits. Its FGPMMOPA6H module is the GPS chip used on Adafruit's well-known "Ultimate GPS Breakout" board, and its Titan X1 (MediaTek MT3333 chipset) was announced in 2017 as a compact multi-GNSS module for embedded designs.

In April 2017, Sierra Wireless acquired substantially all assets of GlobalTop's GNSS embedded-module business for roughly US$3.2M, per Sierra Wireless's own SEC Form 6-K and multiple trade-press outlets. GlobalTop's site still lists GNSS modules today, which is not fully reconciled with that 2017 sale — noted here as an open question, not resolved.

No CVE or security disclosure naming GlobalTop or its modules specifically was found in this research pass; that is reported as Unknown, not as a clean bill of health.

IEEE assignment

2 prefixes → GlobalTop Technology Inc. / GlobalTop Technology, Inc., registered ShanHua, Tainan county, TW 741 [Confirmed] — IEEE MA-L (lines 28471, 29339)

Registry / block size

MA-L (24-bit OUI) only; 2 IEEE prefixes; no MA-M or MA-S registrations found [Confirmed] — the IEEE MA-L registry, the Wireshark manufacturer database

HQ / country

16 Nan-Ke 9th Rd., Science-Based Industrial Park, ShanHua, Tainan county, TW 741, Taiwan [Confirmed] — IEEE MA-L

Company status

active [Confirmed] — gtop-tech.com (live product site)

Device types

GNSS/GPS embedded modules — standalone GPS, multi-GNSS, GPS-with-antenna, evaluation/firmware kits [Confirmed] — gtop-tech.com

Notable products

FGPMMOPA6H (used in Adafruit "Ultimate GPS Breakout"); Titan X1 (MediaTek MT3333-based multi-GNSS, announced 2017-03); MT3339-based GPS modules [Confirmed] — cdn-shop.adafruit.com datasheet, insidegnss.com

Verified prefixes (both MA-L, GlobalTop)

00:09:83, 00:1C:D9 [Confirmed] — IEEE MA-L

Registration dates

Unknown — IEEE publishes no assignment/registration date for MA-L OUI blocks (the IEEE MA-L registry columns are Registry, Assignment, Organization Name, Organization Address only); maclookup.app's "registered" dates (2002-06-05 for 00:09:83, 2007-06-16 for 00:1C:D9) are third-party database artifacts, not IEEE facts

[Confirmed as to the caveat] — maclookup.app/vendors/globaltop-technology-inc

Special note

In April 2017 Sierra Wireless acquired substantially all assets of GlobalTop's GNSS embedded-module business (~US$3.2M), confirmed via Sierra Wireless's SEC Form 6-K plus GlobeNewswire, GPS World, Via Satellite, and EverythingRF coverage; GlobalTop's own site still lists GNSS modules today, an unreconciled detail flagged as an open question rather than asserted either way [Confirmed for the acquisition; Unknown for post-2017 product-line reconciliation] — sec.gov (6-K), globenewswire.com, gpsworld.com, gtop-tech.com

Related vendors

Sierra Wireless (acquired GlobalTop's GNSS embedded-module business assets, 2017) [Confirmed] — sec.gov, globenewswire.com

Security context

No GlobalTop-specific CVE or disclosed vulnerability found in this research pass [Unknown — no findings, not a confirmed absence]

Analyst note

A GlobalTop OUI is a module-maker signature — it identifies an embedded GNSS/positioning module inside a tracker, IoT device, drone, or automotive/industrial product, not necessarily a GlobalTop-branded end product.