403/429 spikes mid-crawl
Likely causes
- - Rate too high for the target
- - Retries hammer the same URL
Verified remedy
Cut CONCURRENT_REQUESTS, add backoff, honor Retry-After, and resume slowly.
Proxy troubleshooting
Fix scrapy banned despite proxy
Ranked causes, ordered diagnostics, and a verified remedy for scrapy banned despite proxy - ending with a final connection check.
Quick answer
Fix: Scrapy blocked while using a proxy. Confirm endpoint values, test with curl through the endpoint, apply the matched remedy, then re-verify the exit IP is your assigned endpoint.
Exact symptom text
Causes ranked by likelihood
Ordered diagnostics
Final connection check
When this is the right fit
- Exact symptom text
- Causes ranked by likelihood
- Ordered diagnostics
Who this page is for
Ranked causes, ordered diagnostics, and a verified remedy for scrapy banned despite proxy - ending with a final connection check.
Fix: Scrapy blocked while using a proxy. Confirm endpoint values, test with curl through the endpoint, apply the matched remedy, then re-verify the exit IP is your assigned endpoint.
Diagnosis tree
Banned from the first request
Likely causes
- - Endpoint reputation inherited from others (shared pool)
- - Wrong endpoint type for the target
Verified remedy
Move to a dedicated static residential endpoint so only your traffic shapes the address.
Final connection check
- 1Apply the remedy for the matched symptom
- 2Test the endpoint directly with curl -x or --socks5-hostname
- 3Repeat the original action in the tool
- 4Confirm the exit IP is the assigned endpoint
Working connection
The original action completes and the exit IP matches the endpoint.
Broken connection
If curl through the endpoint also fails, the problem is endpoint-level: check dashboard status or swap to a spare endpoint.
Sources
Facts last reviewed 2026-09-01.
Prevent it recurring
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Frequently asked questions
How do I fix scrapy banned despite proxy?
Work the diagnosis tree top to bottom: confirm endpoint values, test with curl through the endpoint, apply the remedy, then run the final connection check.
Why does this keep coming back?
Recurring proxy failures usually trace to an unstable mapping - rotating endpoints or shared addresses. A dedicated static endpoint per profile makes behavior predictable.
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