Data 21

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Contact Information

Main

(310) 870-7221

Corporate Headquarters

Data 21, Inc.
3820 Del Amo Blvd., Suite 302
Torrance, CA 90503

2026 Holiday Schedule

Data 21

2026 Holiday Schedule

Data 21 offices will be closed on the following dates.

Date Day Holiday Observed
Feb 16 Monday Presidents Day
May 25 Monday Memorial Day
July 3 Friday Independence Day
Sep 7 Monday Labor Day
Nov 26 Thursday Thanksgiving Day
Nov 27 Friday Day After Thanksgiving
Dec 24 Thursday Christmas Eve
Dec 25 Friday Christmas Day
Dec 31 Thursday New Year's Eve
Jan 1 Friday New Year's Day

Over 45 Years of Mainframe Solutions

Data 21 Enterprising Software

Data 21, the Data 21 logo, and all other Data 21 software product and service names are trademarks of Data 21. All other trademarks belong to their respective companies. © Copyright 2026 Data 21. PKZIP®, PKWARE®, SecureZIP® are trademarks of PKWARE® and are not affiliated with Data 21.

Data 21

About Data 21

Founded in 1980, Data 21 Inc. is a veteran-owned enterprise software company headquartered in California. For over 45 years, we have delivered innovative, reliable, high-performance mainframe-centric solutions that power today’s connected enterprise.

Our software is embedded in the critical daily operations of hundreds of enterprises worldwide — a testament to our commitment to exceptional engineering and long-term client success. We don’t just support our customers; we evolve alongside them.

At Data 21, the mainframe isn’t a legacy constraint — it’s a strategic foundation.

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