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Companies using IBM z/OS Communications Server

As of 14 October 2026, Firmable tracks 6 companies across 13 countries running IBM z/OS Communications Server. See who they are, and who to call.

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Companies using IBM z/OS Communications Server

Showing 4 of 6 companies

U.S. Bank

usbank.com · Banking · 10,001+ employees

Last seen 23 Jul 2026 The most recent date Firmable detected IBM z/OS Communications Server at this company.

Decision makers · 21K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Vice President - Lead Software Engineer MobileEmail
Vice President - Full Stack AI Engineering MobileEmail

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

Hired as assistant vice president in the Research Division in Minnesota · 28 Sep 2026

U.S. Bank invests into NLEN. · 21 Sep 2026

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Cognizant

cognizant.com · Computer software · 10,001+ employees

Last seen 5 Sep 2026 The most recent date Firmable detected IBM z/OS Communications Server at this company.

Decision makers · 16K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Oracle Cloud ERP Program Director MobileEmail
Director of Engineering MobileEmail

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

New MIS Lead joined · 31 Aug 2026

New Associate Partner / Director - AI Consulting Services appointed · 31 Jul 2026

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DXC Technology

dxc.com · Cybersecurity · 10,001+ employees

Last seen 3 Sep 2026 The most recent date Firmable detected IBM z/OS Communications Server at this company.

Decision makers · 5.9K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Head of Connected Intelligent Enterprise ANZ MobileEmail
Senior Director of Engineering MobileEmail

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

New Associate Manager Infrastructure Services joined · 30 Sep 2026

Hired as President of the Americas Market · 18 Sep 2026

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Kyndryl

kyndryl.com · Cybersecurity · 10,001+ employees

Last seen 21 Aug 2026 The most recent date Firmable detected IBM z/OS Communications Server at this company.

Decision makers · 4.2K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Associate Director, Cybersecurity Resilience and Connectivity MobileEmail
Associate Director, Creative Technology MobileEmail

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

New Consult Partner appointed · 31 Aug 2026

Kyndryl Inc. acquired Healthcare IT Leaders, LLC for $350M on Aug 10th '26. · 10 Aug 2026

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Who uses IBM z/OS Communications Server

A breakdown of the 6 companies running IBM z/OS Communications Server.

Top industries

Information technology and services4
Financial services1
Professional and business services1

Company size

1,001–5,0001 (20%)
10,001+4 (80%)

Share of companies with a recorded size, by employees.

No size recorded: 1

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Frequently asked questions

About the IBM z/OS Communications Server data on this page.

How many companies use IBM z/OS Communications Server?

Firmable holds confirmed IBM z/OS Communications Server detections for 6 distinct companies, 5 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.

Which companies use IBM z/OS Communications Server?

U.S. Bank, Cognizant and DXC Technology are among the most prominent in the current set.

What industries use IBM z/OS Communications Server?

Information technology and services, financial services and professional and business services lead the set, across 3 industries in total.

What size companies use IBM z/OS Communications Server?

Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.

Where are IBM z/OS Communications Server users based?

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

How current is this data?

5 companies were confirmed in the last 90 days. Last detection 5 September 2026.

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