# 664 — FIPS 140 validated cryptographic modules: active, historical or revoked

For 664, vendor is Zix Corporation; module name is ZixCorp Crypto Module; module type is Software; validation date is 04/26/2006 06/04/2009 07/08/2009; status is Historical, verified against its source on 2026-08-05.

- **Certificate number:** 664 _(verified: appears in the quote below)_
- **Vendor:** Zix Corporation _(verified: appears in the quote below)_
- **Module name:** ZixCorp Crypto Module _(verified: appears in the quote below)_
- **Module type:** Software _(verified: appears in the quote below)_
- **Validation date:** 04/26/2006 06/04/2009 07/08/2009 _(verified: appears in the quote below)_
- **Status:** Historical _(verified: appears in the quote below)_
- **Standard:** FIPS 140-2 _(verified: appears in the quote below)_

## What the source says

> 664 | Zix Corporation | ZixCorp Crypto Module | Software | 04/26/2006 06/04/2009 07/08/2009 | Historical |

## Source

- https://csrc.nist.gov/Projects/cryptographic-module-validation-program/validated-modules/Search?SearchMode=Advanced&Standard=140-2&CertificateStatus=Historical&ValidationYear=0

Last verified: 2026-08-05. Review by: 2026-09-04.
Part of [FIPS 140 validated cryptographic modules: active, historical or revoked](https://referencesource.org/fips-140-module-validation-status/).