← Glossary / Cloudflare Error 1006 (Access Denied)

What is Cloudflare Error 1006 (Access Denied)?

Cloudflare Error 1006 (Access Denied) is a hard edge-level block indicating that your client's IP address has been explicitly banned from accessing the target domain. Unlike a 1020 error which triggers on specific request signatures or a challenge page that tests your browser, a 1006 means the connection is severed before HTTP routing even begins. For a scraping pipeline, it's a fatal signal that your proxy pool's reputation is burned or you've hit a manual firewall rule.

CloudflareIP BanWAFProxy ReputationEdge Block
// 02 — definitions

The edge
says no.

Why Cloudflare drops your connection before evaluating your request, and what it means for your proxy infrastructure.

Ask a DataFlirt engineer →

TL;DR

Cloudflare Error 1006 occurs when a website owner explicitly blocks your IP address, ASN, or geographic region using Cloudflare's firewall rules. It is a network-layer rejection. Bypassing it requires shifting to a clean IP pool — typically residential or mobile proxies — because no amount of header spoofing or browser fingerprinting will save a banned IP.

01Definition & structure
A Cloudflare Error 1006 occurs when a client's IP address is explicitly blocked by a Cloudflare customer's firewall settings. It is a network-layer rejection. When this happens, the Cloudflare edge node terminates the connection and serves a static 403 Forbidden page. The request is never forwarded to the origin server, meaning no backend application logic or rate limiting is involved at that stage.
021006 vs 1020 vs 1015
Understanding Cloudflare's error codes is critical for debugging pipeline failures:
  • Error 1006 — The IP address is banned. Fix: Rotate the IP.
  • Error 1020 — A firewall rule was violated by the request payload (e.g., bad User-Agent, missing headers). Fix: Adjust request signatures.
  • Error 1015 — The IP is rate-limited. Fix: Slow down or rotate the IP.
03Common triggers for a 1006 block
The most frequent cause of a 1006 error in scraping is ASN blocking. Many site administrators configure Cloudflare to drop all traffic from known hosting providers (AWS, Google Cloud, DigitalOcean, Hetzner) to filter out cheap bots. Geographic blocking is the second most common trigger, where a site only permits traffic from specific countries. Finally, if an IP has a high global threat score due to previous abuse, Cloudflare's automated systems may issue a 1006 block dynamically.
04How DataFlirt handles it
We treat 1006 errors as infrastructure routing signals, not scraper failures. Our proxy orchestrator monitors response codes in real time. If a worker receives a 1006, the orchestrator immediately quarantines that IP for that specific target domain, logs the block vector (e.g., ASN or Geo), and transparently retries the request using a higher-tier residential or mobile proxy. This ensures the pipeline continues delivering data without manual intervention.
05The "Bad IP" misconception
Engineers often assume a 1006 error means their specific scraper did something wrong to get banned. In reality, if you are using shared datacenter proxies, you inherit the reputation of everyone else using that subnet. Your scraper might be perfectly compliant, but if another user launched a volumetric DDoS attack from the same IP block yesterday, you will receive a 1006 error today. IP reputation is a shared, historical metric.
// 03 — the block model

How IPs get
blacklisted.

Cloudflare evaluates IP reputation based on global threat intelligence and customer-specific firewall rules. DataFlirt monitors proxy pool health to preempt these blocks before they impact pipeline yield.

IP Threat Score = S = global_spam_rate × asn_risk_weight
Scores above 10 often trigger automated edge blocks on strict targets. Cloudflare IP Reputation Model
Pool Burn Rate = B = 1006_responses / total_requests
If B > 0.02%, the subnet is tainted and requires immediate rotation. DataFlirt proxy health SLO
Routing Efficiency = E = 1 − (blocked_ips / active_pool)
Maintained at > 0.99 across DataFlirt's residential fleet. Internal telemetry
// 04 — the edge response

A hard block
at the CDN.

Trace of a scraper hitting a target with a datacenter IP that has been explicitly blocked by a Cloudflare firewall rule. The request never reaches the origin server.

HTTP/2Status 403CF-RAY
edge.dataflirt.io — live
CAPTURED
// inbound request via datacenter proxy
GET /api/v1/catalog HTTP/2
Host: target-ecommerce.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)...

// edge evaluation
cf.client.ip: 198.51.100.42
cf.client.asn: AS16509 (Datacenter)
cf.firewall.rule: "Block Known Hosting Providers"
cf.action: DROP

// response
HTTP/2 403 Forbidden
Server: cloudflare
CF-RAY: 88a1b2c3d4e5f6g7-IAD
Content-Type: text/html
[HTML] Error 1006: Access Denied
[HTML] The owner of this website has banned your IP address.
// 05 — block vectors

Why your IP
got banned.

The most common reasons a scraper encounters a 1006 error, ranked by frequency across our monitored pipeline telemetry.

SAMPLE SIZE ·  ·  ·  ·    1.2M 1006 errors
WINDOW ·  ·  ·  ·  ·  ·   90d trailing
UPDATED ·  ·  ·  ·  ·  ·  2026-05-19
01

Explicit ASN Block

82% of blocks · Datacenter IP ranges blocked by default
02

Geographic Block

65% of blocks · Country-level firewall rules
03

High Threat Score

45% of blocks · IP flagged for spam/DDoS globally
04

Manual IP Ban

15% of blocks · Admin explicitly blacklisted the scraper's IP
05

Shared Proxy Taint

10% of blocks · Another user burned the IP reputation
// 06 — our infrastructure

Don't fight the edge,

route around it.

A 1006 error is a network-layer rejection. You cannot solve it by tweaking headers, solving a CAPTCHA, or running a heavier headless browser. The only solution is a clean exit node. DataFlirt's proxy orchestrator detects 1006 responses in real time, immediately quarantines the offending IP or subnet, and transparently retries the request through a verified residential or mobile node with a pristine threat score.

Proxy Orchestrator Trace

Real-time handling of a 1006 block during a high-volume scrape.

request.id req_88a1b2c3
initial.proxy dc_us_east_04
initial.status 403 · Error 1006
action quarantine_ip · retry
fallback.proxy res_us_tx_comcast
fallback.status 200 OK
pipeline.state recovered · 120ms penalty

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// 07 — FAQ

Common
questions.

Common questions about Cloudflare 1006 errors, IP reputation, and how to maintain access to heavily protected targets.

Ask us directly →
What is the difference between Error 1006 and Error 1020? +
Error 1006 is an explicit IP or ASN ban — the edge drops you based on *where* you are connecting from. Error 1020 is a firewall rule violation based on *how* you are connecting — usually triggered by a bad User-Agent, missing headers, or a malformed request signature. You fix 1006 by changing IPs; you fix 1020 by fixing your request payload.
Can I bypass a 1006 error using Playwright or Puppeteer Stealth? +
No. A 1006 error happens at the network edge before any HTML is served and before any JavaScript is executed. Browser automation and stealth plugins only help against client-side challenges (like Turnstile or JS challenges). If your IP is banned, your headless browser will just render the 1006 error page.
Why did my residential proxy get a 1006 error? +
Even residential IPs can hit a 1006 if the target has implemented strict geographic blocking (e.g., blocking all non-US traffic) and your proxy is in the wrong country. Alternatively, the specific residential IP might have a temporarily high threat score if it was recently part of a botnet or heavily abused by another proxy user.
How does DataFlirt prevent IP bans at scale? +
Through predictive routing and subnet diversity. We map target ASN tolerance continuously. If a target blocks AWS and DigitalOcean, we don't waste requests finding out — we route directly through our ISP or residential pools. When a 1006 does occur, the IP is quarantined globally across our fleet to prevent cascading failures.
Is it legal to bypass an IP ban by rotating proxies? +
IP rotation is standard network behavior, but bypassing explicit access controls can touch CFAA (in the US) or ToS issues depending on jurisdiction and intent. We ensure compliance by respecting rate limits, honoring robots.txt, and accessing only publicly available data. Consult legal counsel for your specific use case.
How long does a Cloudflare 1006 ban last? +
It depends entirely on the site owner's configuration. It could be a temporary penalty (e.g., a 15-minute timeout triggered by a rate limit) or a permanent blacklist entry for your specific IP or entire ASN. In a scraping context, it's safer to assume the IP is burned for that target and rotate immediately.
$ dataflirt scope --new-project --target=cloudflare-error-1006-(access-denied) READY

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hello@dataflirt.com  ·  Bengaluru  ·  IST  ·  typical reply < 4h
// 08 — keep reading

Related glossary terms

Anti-Scraping

Cloudflare Error 1020 (Access Denied by Firewall Rule)

The request-layer equivalent of a 1006 block, triggered by bad headers rather than bad IPs.

Read →
Anti-Bot Bypass

Cloudflare Bot Management

The broader ML-driven system that assigns the threat scores leading to automated edge blocks.

Read →
Anti-Bot Bypass

ASN Blocking

Why entire datacenter ranges get hit with 1006 errors simultaneously, and how to avoid it.

Read →
IP Proxies

IP Reputation

The invisible score that determines whether your proxy gets a 200 OK or a 1006 Access Denied.

Read →