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Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

NCP Data Feeds

Checklist Downloads

NCP-Complete: checklist-0.1-feed.xml, includes all checklists contained within the NCP repository.
NCP-Modified: checklist-0.1-feed-modified.xml, includes all recently modified checklists within the NCP repository.
Schema Version 0.1 NCP/Checklist XML Schema
Feed Updated Download Size (MB)
NCP-Complete 12/21/2025; 12:00:12 AM -0500 META
GZ 0.67 MB
ZIP 0.67 MB
NCP-Modified 12/21/2025; 12:00:13 AM -0500 META
GZ 0.02 MB
ZIP 0.02 MB

CCE Downloads

DOWNLOADS (MS Excel format) DATE UPDATED
CCE v5 - All Platform Groups-COMBINED FILE (Excel) (2329 KB) December 9, 2025
CCE v5 - Apple iOS 18 (110 KB) December 9, 2025
CCE v5 - Apple iOS 26 (110 KB) December 9, 2025
CCE v5 - Apple macOS Sequoia (429 KB) December 9, 2025
CCE v5 - Apple macOS Sonoma (405 KB) December 9, 2025
CCE v5 - Apple macOS Tahoe (433 KB) December 9, 2025
CCE v5 - Apple visionOS 26 (405 KB) December 9, 2025
CCE v5 - Apple iOS 16 (62 KB) September 15, 2025
CCE v5 - Apple iOS 17 (94 KB) September 15, 2025
CCE v5 - Apple macOS Monterey (360 KB) September 15, 2025
CCE v5 - Apple macOS Ventura (380 KB) September 15, 2025
CCE v5 - Apple visionOS 2.0 (42 KB) September 15, 2025
CCE v5 - Apple macOS Bigsur (347 KB) July 13, 2022
CCE v5 - Apple macOS Catalina (297 KB) July 13, 2022
CCE v5 - SUSE Linux Enterprise Server 15 (131 KB) July 13, 2022
CCE v5 - HP-UX 11.23 (202 KB) May 6, 2022
CCE v5 - Red Hat Enterprise Linux 6 (113 KB) October 21, 2020
CCE v5 - Red Hat Enterprise Linux 7 (162 KB) October 21, 2020
CCE v5 - Red Hat Enterprise Linux 8 (137 KB) October 21, 2020
CCE v5 - Red Hat OpenShift Container 3 (15 KB) October 21, 2020
CCE v5 - VMware (37 KB) October 21, 2020
CCE v5 - Apache HTTP 1.3 (47 KB) February 14, 2013
CCE v5 - Apache HTTP 2.0 (97 KB) February 14, 2013
CCE v5 - Apache HTTP 2.2 (123 KB) February 14, 2013
CCE v5 - Apache Tomcat 4 (71 KB) February 14, 2013
CCE v5 - Apache Tomcat 5 (48 KB) February 14, 2013
CCE v5 - Apache Tomcat 6 (47 KB) February 14, 2013
CCE v5 - IIS 5 (53 KB) February 14, 2013
CCE v5 - IIS 6 (80 KB) February 14, 2013
CCE v5 - MS SQL 2000 (48 KB) February 14, 2013
CCE v5 - MS SQL 2005 (82 KB) February 14, 2013
CCE v5 - Microsoft Office 2007 (519 KB) February 14, 2013
CCE v5 - Microsoft Office 2010 (986 KB) February 14, 2013
CCE v5 - Polycom HDX 3.X (260 KB) May 21, 2012
CCE v5 - Windows 7 (537 KB) May 21, 2012
CCE v5 - Internet Explorer 7 (260 KB) March 14, 2012
CCE v5 - Microsoft Exchange 2007 (241 KB) March 14, 2012
CCE v5 - Microsoft Exchange 2010 (245 KB) March 14, 2012
CCE v5 - Windows Server 2008 (269 KB) March 14, 2012
CCE v5 - Windows Server 2008 R2 (505 KB) March 14, 2012
CCE v5 - Windows Vista (354 KB) March 14, 2012
CCE v5 - Windows XP (525 KB) March 14, 2012
CCE v5 - Oracle WebLogic Server 11g (184 KB) October 7, 2011
CCE v5 - Red Hat Enterprise Linux 5 (261 KB) October 7, 2011
CCE v5 - Internet Explorer 8 (906 KB) September 26, 2010
CCE v5 - Sun Solaris 10 (211 KB) April 28, 2010
CCE v5 - Windows 2000 (352 KB) April 28, 2010
CCE v5 - Windows Server 2003 (342 KB) April 28, 2010
CCE v5 - AIX 5.3 (226 KB) May 6, 2009
CCE v5 - Red Hat Enterprise Linux 4 (213 KB) May 6, 2009
CCE v5 - Sun Solaris 8 (219 KB) May 6, 2009
CCE v5 - Sun Solaris 9 (231 KB) May 6, 2009

META Files

Each of the data feeds is described by an associated plain text file with the same name as the .xml file with a .meta extension. These files are updated approximately every two hours to reflect changes within their respective feed file. The .meta file contains information about the specific feed file including the last modified date and time, the size of the file uncompressed, and a SHA256 value of the uncompressed file:

lastModifiedDate:2015-09-10T08:40:09-04:00
size:1273382
zipSize:91619
gzSize:91477
sha256:ac782e2db403e2b09ad5dd676501e8755fda3f2bef347b7503491700c6c5eaff

The META file should be used to determine if a given feed has been updated since your last import. This helps prevent unnecessary downloads of the .zip or .gz files and should result in a reasonable use of less than 200 requests per day.