IP Ban
A block placed on a specific IP address, preventing it from accessing a website or service.
An IP ban is when a website blocks all requests from a specific IP address. From the banned IP, the site returns an error (403, 429, or a custom block page) instead of the requested content.
Sites ban IPs for several reasons: too many requests in a short window (rate limiting), request patterns that look automated (consistent timing, identical headers), accessing restricted endpoints, or matching a known datacenter or malicious IP range.
Detecting a ban: if your requests suddenly return 403 errors, CAPTCHAs, or empty responses after working correctly, the IP may be banned. Test the same request from a different IP to confirm.
Temporary bans expire after a cooldown period - minutes to hours. Permanent bans block the IP indefinitely until it is manually reviewed or the IP is recycled by the ISP.
Rotating proxies prevent IP bans by spreading requests across many IPs. No single IP accumulates enough requests to hit the ban threshold. When using residential proxy pools with millions of IPs, the chance of hitting a previously-banned IP is very low.
Proxies do not prevent all bans - sites also ban by user agent, cookie patterns, and browser fingerprint. IP rotation is one layer; combine it with realistic request patterns and varied user agents for best results.
What a ban actually attaches to
An IP ban refuses traffic from an address. What varies, and what decides your response, is the scope: a single address, a subnet, an entire autonomous system, or a rule that fires on the combination of address and something else about your request.
Duration varies just as much. Some bans expire in minutes, some persist for weeks, and some are not bans at all but rate limits that look identical from outside. A 403 on every request from one address across days is a ban. A 429 that clears after ten minutes is a limit.
Sites also ban softly. Instead of refusing you they serve reduced content: default prices, an empty catalogue, stale inventory. This is worse than a block because your scraper reports success and your data is quietly wrong.
Reading the response before reacting
The status code tells you which problem you have, and each one has a different fix:
Diagnosis
403 on the first request -> address class rejected, change proxy type
403 after many requests -> address burnt, rotate or rest it
429 -> rate limit, spread across more addresses
200 with suspiciously thin data -> soft ban, compare against a clean fetch- Compare a suspicious response against one fetched through a different address type. Soft bans only show up in comparison.
- If a fresh static address arrives already blocked, that is inherited history and we will replace it.
- Resting an address often works better than rotating fast. Many limits decay with time rather than with traffic volume.
- Never retry a hard 403 in a loop. It costs traffic on metered products and confirms the pattern that got you blocked.
Misconceptions about bans
A new address does not clear an account flag
If the account is flagged, the address was only part of the evidence. Moving it to a clean IP does not undo the record.
Rotating faster is not a fix for rate limits
The counter is per address. Spreading across more addresses is the fix; cycling one address faster is not.
Not every block is about you
Shared and previously used addresses carry other people's history, which is what dedicated addresses are for.
A ban is not always visible
Soft bans return 200. Treat unexpectedly clean or thin data as a symptom.
See this in practice
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