Detection
Everything tagged Detection.
25 articles
Topic Detection
Guide
Anonymous Proxy Detected: What It Means and How to Fix It
Anonymous proxy detected means a site found your address on a list of proxies, VPNs or relays. Why it happens, what we measured, and the fixes in order.
October 22, 2026 · 9 min read
Guide
Cloudflare 403 Forbidden: What Blocked You and What to Do
A 403 from a site behind Cloudflare is one of five answers: a challenge, a block page, a numbered error, the site's own refusal or a bare edge error. How to tell which one you got, who can fix it, and what our test of 140 Cloudflare sites showed.
October 22, 2026 · 13 min read
Guide
Blocked From Editing Wikipedia? Why It Happens and How to Edit Again
Why Wikipedia blocks people who never edited, how to read the block notice, and the ways back its rules allow. We checked 300 proxies: 99 were blocked.
August 26, 2026 · 11 min read
Guide
Cloudflare Error 1020: What Access Denied Means in 2026 and Who Can Fix It
Cloudflare error 1020 means a security feature the site owner set, such as API Shield, blocked your request. What causes it now and who can lift it.
August 26, 2026 · 6 min read
Guide
Cloudflare Verify You Are Human Loop: Why It Repeats and How to Fix It
The box says you passed, the page reloads, and Cloudflare asks again. Why the pass does not stick, and the fix for each cause, in order.
August 26, 2026 · 16 min read
Guide
How to Check If an IP Is Blacklisted, Step by Step
Check whether an IP is blacklisted the way the blocklists work: a reversed-IP DNS lookup, Spamhaus' listing and error codes, the test entries, and dead lists.
August 26, 2026 · 7 min read
Guide
A Website Says VPN or Proxy Detected: Why It Happens and What You Can Do
Why a site says VPN or proxy detected: address lists, hosting ranges, shared carrier addresses and browser signals, from the vendors' own docs, and the fixes.
August 26, 2026 · 14 min read
Explainer
What Is a Clean IP? What It Is Clean Of and How to Check
A clean IP has no blocklist entry, no abuse record and no proxy flag. What each check reads, how to run it, and why 6 of 5,948 free proxies passed all four.
August 26, 2026 · 8 min read
Explainer
What Is a Good IP Fraud Score? What Each Scale Means
A good IP fraud score is a low one, but each service draws its own lines. What Scamalytics, IPQS and MaxMind say, and what 4,992 free proxies scored.
August 26, 2026 · 8 min read
Guide
Why Is My IP Blocked? How to Tell What Flagged It, and How to Fix It
Why a site blocks your IP: a shared address (CGNAT, VPN), a datacenter range, a reputation list or your own traffic. How to tell which, and the way back in.
August 26, 2026 · 7 min read
Guide
Access Denied, Reference #18 (Akamai): What It Means and How to Fix It
The Access Denied page with a Reference #18 number comes from Akamai, not the site. What the number says, why you were refused, and what to do, in order.
August 24, 2026 · 8 min read
Guide
Cloudflare Errors 1006, 1015 and 1020: What Each Code Means and Who Can Lift It
Cloudflare's 1xxx codes name what refused you: an IP, network or country ban, your browser, a rate limit or a security feature, and who can lift each one.
August 24, 2026 · 8 min read
Guide
CloudFront "The Request Could Not Be Satisfied": Every Version, What It Means, the Fix
The CloudFront error page comes in eight versions, from Request blocked and Bad request to the country block and the 504 timeout. What each second line means, from AWS and 628 reports.
August 24, 2026 · 10 min read
Guide
FlareSolverr Not Working? Every Error Message, What Causes It, and the Fix
Challenge not detected, Timeout after 60.0 seconds, cookies not valid, empty cookies: which program wrote your FlareSolverr error, what it means, and the fix.
August 24, 2026 · 18 min read
Guide
Google "Unusual Traffic From Your Computer Network": What It Means and How to Stop It
Google shows this page when your network looks automated. Both versions of the page word for word, the causes Google lists, and the fixes in order.
August 24, 2026 · 8 min read
Guide
YouTube "Sign in to Confirm You're Not a Bot": Fixes in the Browser and in yt-dlp
Why YouTube asks you to confirm you are not a bot, what yt-dlp adds to the message, and the checks that fix it, in the order 51 bug reports rank them.
August 24, 2026 · 10 min read
Guide
"Sorry, You Have Been Blocked" (Cloudflare): Why You See It and What Fixes It
Cloudflare's block page means a rule on the site refused your request: your address, your network, or what you sent. Every line explained, from Cloudflare's documentation and 476 reports.
August 24, 2026 · 13 min read
Explainer
Transparent vs anonymous vs elite proxies: proxy anonymity levels, tested
Proxy anonymity levels, tested: the headers that make a proxy transparent, anonymous or elite, a test that shows the leak, and what elite cannot hide.
July 21, 2026 · 12 min read
Explainer
What Is a Datacenter Proxy? How Sites Tell and When to Use One
What is a datacenter proxy? A proxy whose exit IP belongs to a cloud or hosting company. How sites tell from the registry and the clouds' own lists, what one costs, and when to use it.
July 18, 2026 · 7 min read
Explainer
What Is Proxy Rotation? How It Works and What It Fixes
Proxy rotation changes your exit IP per request or per session. What four firewalls count, sticky windows, and how fast free proxies stop answering.
July 18, 2026 · 10 min read
Explainer
What Is a Rotating Proxy? How It Works, What It Costs, When to Use It
What is a rotating proxy? One gateway that sends each request out through a different IP. How rotation works, what it beats, and what it costs by IP type.
July 17, 2026 · 8 min read
Explainer
What Is an ASN? The Number That Tells Websites Who Owns Your IP
An ASN is the number that names one network on the internet. What it means, who assigns it, how to look one up for any IP, and why websites check it.
July 17, 2026 · 11 min read
Explainer
What Is JA3/JA4 Fingerprinting? How a TLS Handshake Identifies Your Client
JA3 and JA4 turn the first TLS message your software sends into a fingerprint. How both are built, what nine clients sent, and why a proxy leaves them alone.
July 17, 2026 · 10 min read
Explainer
Datacenter vs Residential Proxies: Price, Detection and Which to Buy
Datacenter vs residential proxies, priced at the same seven sellers on October 22, 2026: how sites spot server IPs, and which one to buy for your target.
July 3, 2026 · 9 min read
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Proxies that don't die mid-job
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HProxy.
Honest guides and comparisons on proxies, scraping and staying unblocked, from the team that runs the network.