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Companies using Yeastar S100 PBX

As of 14 October 2026, Firmable tracks 17 companies across 13 countries running Yeastar S100 PBX. See who they are, and who to call.

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Companies using Yeastar S100 PBX

Showing 5 of 17 companies

Etex Telephone Cooperative

etex.net · Internet services and web portals · 251–500 employees

Last seen 1 Oct 2026 The most recent date Firmable detected Yeastar S100 PBX at this company.

Decision makers · 9 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Technical Support Supervisor MobileEmail
Director of Business Operations and Product Development MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

No signals recorded

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Xfinity Communities

xfinity.com · Entertainment · 1,001–5,000 employees

Last seen 12 Oct 2026 The most recent date Firmable detected Yeastar S100 PBX at this company.

Decision makers · 301 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Network Maintenance Supervisor MobileEmail
Technical Operations Supervisor MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Hiring: Technical Program Manager, Partner Delivery · 13 Aug 2026

Xfinity Home Security Limited opens new location in Fort Myers, Florida, United States, Northern America, Americas. · 28 Sep 2026

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Fibernet Indonesia

fiber.net.id · Telecommunications services · 251–500 employees

Last seen 12 Oct 2026 The most recent date Firmable detected Yeastar S100 PBX at this company.

Decision makers · 238 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

National Sales Manager MobileEmail
Sales Manager MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

New Account Manager joined · 31 Aug 2026

Hiring: Account Manager · 7 Oct 2026

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Altice Europe

altice.net · Online and digital media · 501–1,000 employees

Last seen 27 Sep 2026 The most recent date Firmable detected Yeastar S100 PBX at this company.

Decision makers · 5 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Traffic Supervisor MobileEmail
Vice President Sales, Contact Centers Mobile

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Altice sells assets to Asterion Industrial. · 11 Aug 2026

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CenturyLink

centurylink.com · Internet services and web portals · 10,001+ employees

Last seen 13 Sep 2026 The most recent date Firmable detected Yeastar S100 PBX at this company.

Decision makers · 2.9K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Vice President, Advance Technology Solutions MobileEmail
Director: Environmental, Outside Plant, & Wireless - Strategy & Development MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

No signals recorded

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Who uses Yeastar S100 PBX

A breakdown of the 17 companies running Yeastar S100 PBX.

Top industries

Information technology and services8
Media and telecommunications5
Construction and building2
Art, sports and recreation1
Industrial and manufacturing1

Company size

11–506 (43%)
251–5002 (14%)
501–1,0002 (14%)
1,001–5,0003 (21%)
10,001+1 (7%)

Share of companies with a recorded size, by employees.

No size recorded: 3

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Frequently asked questions

About the Yeastar S100 PBX data on this page.

How many companies use Yeastar S100 PBX?

Firmable holds confirmed Yeastar S100 PBX detections for 17 distinct companies, 17 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.

Which companies use Yeastar S100 PBX?

Etex Telephone Cooperative, Fibernet Indonesia and Xfinity Communities are among the most prominent in the current set.

What industries use Yeastar S100 PBX?

Information technology and services, media and telecommunications and construction and building lead the set, across 7 industries in total.

What size companies use Yeastar S100 PBX?

Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.

Where are Yeastar S100 PBX users based?

The United States, Indonesia, Australia and Canada account for most detections, across 13 countries.

How current is this data?

17 companies were confirmed in the last 90 days. Last detection 14 October 2026.

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