nasa.gov

Comparable visits

Observed differences across comparable visits

• Aug 17, 2026+19 third-party requests, +2 third-party tracking-service requests compared with Aug 10, 2026
• Jul 6, 2026+33 third-party requests, +6 third-party tracking-service requests compared with Jun 25, 2026

This v1 history holds the route, scanner method, browser, device, conditions, catalog, Brave-list source and list count constant. It does not hold the filter-list snapshot date constant: a changed snapshot can support raw and catalogued-service differences, but never a Shields or detector delta, so a difference here is not evidence that blocking behaviour changed. Differences can still reflect site experiments, ad rotation, caching or bot detection.

Evidence timeline

10 reports

The trend line covers this site's 3 most recent reports from one measurement cohort. 4 other reports were measured under different methodology generations, a different requested GPC condition and different tracker-catalog identities, so they are listed below rather than joined to one line.

1. Aug 17, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 18 fewer third-party requests in the visit configured for Brave-list blocking.29 third-party requests · 10 third-party tracking-service requests · schema 1
2. Aug 14, 2026 · GPC comparison · desktopnasa.gov's retained request log includes catalogued Google domains.at least 31 third-party requests · at least 12 third-party tracking-service requests · schema 2.r2 · request evidence incomplete: this visit has incomplete request evidence from another bounded capture loss, so its request counts are lower bounds and it is excluded from the medians, leaderboard, and since-last-scan deltas.
3. Aug 10, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 10 fewer third-party requests in the visit configured for Brave-list blocking.10 third-party requests · 8 third-party tracking-service requests · schema 1
4. Aug 7, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 20 fewer third-party requests in the visit configured for Brave-list blocking.31 third-party requests · 12 third-party tracking-service requests · schema 1
5. Jul 27, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 20 fewer third-party requests in the visit configured for Brave-list blocking.20 third-party requests · 13 third-party tracking-service requests · schema 1
6. Jul 21, 2026 · Brave-list blocking comparison · desktopnasa.gov's retained request log includes catalogued Google domains.at least 20 third-party requests · at least 13 third-party tracking-service requests · schema 1 · request evidence incomplete: this visit has incomplete request evidence from another bounded capture loss, so its request counts are lower bounds and it is excluded from the medians, leaderboard, and since-last-scan deltas.
7. Jul 21, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 24 fewer third-party requests in the visit configured for Brave-list blocking.24 third-party requests · 17 third-party tracking-service requests · schema 1
8. Jul 6, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 41 fewer third-party requests in the visit configured for Brave-list blocking.55 third-party requests · 21 third-party tracking-service requests · schema 1
9. Jul 2, 2026 · consent comparison attempt (no control activated) · desktopnasa.gov contacted catalogued Google domains during this visit.21 third-party requests · 14 third-party tracking-service requests · schema 1
10. Jun 25, 2026 · Brave-list blocking comparison · desktopnasa.gov recorded 22 fewer third-party requests in the visit configured for Brave-list blocking.22 third-party requests · 15 third-party tracking-service requests · schema 1