Zyxel

Zyxel Communications Corporation

Vendor

Zyxel is a Taiwanese networking manufacturer founded in Hsinchu in 1989, best known for the modems, routers and switches it sells to homes, small businesses and internet providers. Its security products sit at the small and mid-size end of the market, where the buyer wants one appliance rather than a security programme. The USG FLEX series is the main firewall line, with the USG FLEX H series as the current hardware generation, and the ATP series above it adding sandboxing and threat intelligence subscriptions. Both are managed through Zyxel's Nebula cloud platform, which is how its resellers administer many small sites at once. It competes on price and simplicity rather than on depth, and like other appliance makers here it is not assessed by the malware laboratories.

Country: Taiwan
Headquarters: Hsinchu, Taiwan
Year Established: 1989
Employees: 3,690
Customers: 1M business customers (2026)Vendor states: Zyxel — About
Users: 20M users (2026)Estimated by LLM
Revenue: ≈ $784.2M (2025)NT$25.3B as published · converted at an approximate rateSource: China Times (wantrich) reporting Zyxel Group Corp. (TWSE 3704) self-reported results
Website: https://www.zyxel.com
Status: Active

Support locations

Support in 5 countries on 2 continents

Headquarters · Hsinchu, Taiwan Support location Country with support

Europe4 countries: Belgium · MechelenFrance · LimonestGermany · WürselenUnited Kingdom · Wokingham
Asia1 country: Taiwan · Hsinchu

Where the vendor offers local support — a support centre, an office it lists, or a local support line (shown as the country alone) — from the vendor’s own site. Partners and resellers are not counted.

Products

Product	Category	Market	Platform & Version	Free / Paid
Zyxel ATP Series	Network Firewall	SMB	Hardware Appliance	Paid
Zyxel USG FLEX H Series	Network Firewall	SMB	Hardware Appliance	Paid
Zyxel USG FLEX Series	Network Firewall	SMB	Hardware Appliance	Paid

Certifications

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Recent test results

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Recent changes

2026-10-28New version: 1.40 Zyxel USG FLEX H Series
2026-10-28New version: 5.45 Zyxel USG FLEX Series
2026-10-28New version: 5.45 Zyxel ATP Series
2026-10-18Support location: Mechelen, BE
2026-10-18Support location: Limonest, FR
2026-10-18Support location: Würselen, DE
2026-10-18Support location: Wokingham, GB
2026-10-18Support location: Hsinchu, TW
2026-10-17Users: 20M users (2026, from LLM estimation)
2026-10-13New version: 1.39 Zyxel USG FLEX H Series
2026-10-13New version: 5.43 Zyxel USG FLEX Series
2026-10-13New version: 5.43 Zyxel ATP Series
2026-10-08Employees: 3,690
2026-10-08Revenue: TWD 25.295B (2025, from China Times (wantrich) reporting Zyxel Group Corp. (TWSE 3704) self-reported results)
2026-10-08High Availability: limited Zyxel USG FLEX Series

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