Topic Guides
Unable to Connect to the Proxy Server: Fixes for Every Device
Chrome's older wording for ERR_PROXY_CONNECTION_FAILED, still common on Android and Chromebooks. Where the proxy setting lives on each device and how to clear it.
Windows Could Not Automatically Detect This Network's Proxy Settings: How to Fix It
What the troubleshooter actually checked, why it blames the proxy, and the fixes in order: a leftover proxy setting, WinHTTP, the VPN, Winsock, and the driver.
Proxy Error Codes: What Each Message Means and Who Sent It
Every proxy error comes from one of three places: your machine, the proxy or the site. We sent the same failures to nine clients and recorded what each one prints.
Geo-Testing Your App With Proxies: A QA Playbook
Localised pricing, regional catalogues and country-gated features all ship untested because QA runs from one office. How to verify what each country actually sees, in CI, without a VPN farm.
How to Resell Proxies in 2026: The Business, the Math and the Traps
Most proxy brands you can name are resellers themselves. How the business actually works, what it costs to start, where new resellers die, and how to pick a program that does not bill you before your customers do.
How to Test Proxy Speed and Latency (Free Methods)
How to test proxy speed and latency for free: curl timing variables, a small Python timer, what latency, TTFB and throughput each mean, and testing from the right region.
How to Use Proxies With aiohttp (async Python)
How to use proxies with aiohttp: the proxy argument, BasicAuth, trust_env, SOCKS5 through aiohttp-socks, rotating a pool across concurrent tasks, timeouts and retries.
How to Use Proxies With Axios (Node.js)
How to use proxies with axios: why the proxy option fails on HTTPS, the httpsAgent fix with https-proxy-agent, SOCKS, auth, rotating a pool, timeouts and verifying the exit.
How to Use Proxies With Colly (Go)
How to use proxies with Colly in Go: SetProxy for one proxy, the RoundRobinProxySwitcher for rotation, SOCKS, authentication, timeouts and retries, and verifying the exit IP.
How to Use Proxies With LangChain
How to use proxies with LangChain: route WebBaseLoader, document loaders and scraping tools through a proxy, and why you proxy the data side, not the model call.
How to Use Proxies With Node fetch (undici ProxyAgent)
Native fetch in Node has no proxy option. How to route it through a proxy with undici's ProxyAgent and setGlobalDispatcher, per-request dispatchers, auth, SOCKS, and verifying the exit.
How to Use Proxies With OkHttp (Java, Kotlin, Android)
How to route OkHttp through a proxy: the proxy() builder method, proxyAuthenticator for auth, SOCKS, a ProxySelector for rotation, per-client design, timeouts, and verifying the exit.
How to Use Proxies With Postman
How to set a proxy in Postman: the custom proxy configuration, system proxy, authenticated proxies, the desktop agent, SOCKS, Newman on the CLI, and verifying the exit IP.
How to Use Proxies With Puppeteer
How to use proxies with Puppeteer: the proxy-server launch arg, authenticated proxies with page.authenticate and proxy-chain, per-context proxies, and rotating a pool.
How to Use Proxies With wget
How to use a proxy with wget: the http_proxy and https_proxy environment variables, the -e flag, proxy auth, no_proxy, why wget has no SOCKS, and verifying the exit IP.
LLM API Rate Limits and Proxies: Why Changing Your IP Does Nothing
Developers hitting 429s on an LLM API often reach for a rotating proxy pool. The quota follows the key in the header, not the address it came from. What actually fixes it, and where proxies do belong in an AI stack.
No-KYC Residential Proxies: Who Lets You Buy Without an ID Check
Some proxy providers want a passport scan or a sales call before your first gigabyte. Which ones ask, why they ask, what no-KYC actually means, and what it does not.
Pay-As-You-Go Proxies: Why a Balance That Never Expires Beats a Plan
Monthly proxy plans bill for traffic you may never send, and the leftover gigabytes vanish at renewal. The arithmetic on what expiry really costs, and when a plan still wins.
Proxies for Antidetect Browsers: The IP Has to Agree With the Fingerprint
An antidetect browser gives each profile its own fingerprint. If the IP behind it contradicts that fingerprint, the pair is easier to catch than either half alone. What to buy, and why rotation breaks it.
Choosing Proxies by ASN and ISP, Not Just by Country
Two IPs in the same country can behave nothing alike, because the target looks up the network operator first. When ASN targeting is the actual requirement, and how to check what you have.
requests vs httpx vs aiohttp: Proxies Compared
How the three Python HTTP clients handle proxies: the config each one uses, SOCKS support, sync versus async, connection reuse, and which to pick for a scraper.
Do Your Proxies Support WebSockets? How to Test It in Two Minutes
WebSockets fail through proxies in three specific ways, and provider docs almost never mention it. The two-minute test, how to read the failure, and why rotation is the usual culprit.
How to Read a Proxy Pricing Page
The cheapest number on a proxy pricing page is usually attached to a different product. Verified examples from Infatica, Rayobyte, IPBurger, Evomi and DataImpulse, and the checklist that catches it.
How the _abck cookie works, measured in a real browser
What the Akamai _abck cookie is, what its value contains, how the sensor rewrites it, and what a proxy changes. Measured in Chrome on 2 September 2026.
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Proxies that don't die mid-job
Residential, ISP, datacenter and mobile, verified by the same engine that runs tens of millions of checks. They read as a real device and hold up under load. Pay as you go, and your balance never expires. $0.44/GB is the 2,000 GB+ rate; a single gigabyte is $0.50/GB, with no minimum order.
129M+ proxy checks run · 100+ countries · HTTP / HTTPS / SOCKS · re-checked every few minutes · no signup