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Block Rate Assessment

A framework for measuring block rates across destinations and proxy sessions.

Scorecard

Block Resilience Score
86.3
Higher scores indicate lower block risk and better recovery.

Methodology

  • • Define block signatures (status codes, CAPTCHA pages, block keywords)
  • • Track responses over a fixed time window
  • • Segment results by region or session type

Metrics

Challenge rate: Percent of responses that require CAPTCHA or JS challenge.
Hard block rate: Percent of responses that return 403/429 or explicit block pages.
Retry success: Percent of blocked responses resolved by one retry.
Last updated 2026-03-11 • 14-day window

Why block rate matters

Block rate is the fastest signal of proxy quality and targeting issues. This assessment helps teams identify whether failures are caused by proxy reputation, concurrency, or destination policy.

How to use this framework

Use a single destination class, record responses, and label block patterns. The scorecard below helps translate those observations into a consistent rate.

Steps

1
Define block signals
Record status codes and page markers that indicate blocking.
2
Collect sample
Run a fixed number of requests per region.
3
Compare results
Use the score to identify problem regions or targets.

Tips

  • • Normalize by destination to avoid mixing different block policies.

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