Proxy knowledge base

Plain-language articles that help you understand proxies and choose the right one.

Private IPv4 in Vietnam and 6 more countries, residential static ISP IPs in Vietnam and the US. Each IP belongs to one customer for the whole rental period.

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What Is a Proxy? A Practical Guide for Beginners

What is a proxy? A plain-English guide to how proxy servers work, the main proxy types, what they are used for, and what they cannot do for you.

IPv4 vs IPv6 Proxy: What Is the Difference?

IPv4 vs IPv6 proxy: how they differ in compatibility, price and reputation, which websites support IPv6, and how to pick the right one for your task.

ISP vs Datacenter vs Residential Proxies Compared

ISP vs datacenter vs residential proxy compared: where each IP comes from, how websites see it, stability, cost and which one fits accounts, ads or scraping.

Private IPv4 or ISP Proxy: Which to Use for Which Task

Private IPv4 or static ISP proxy for Facebook, TikTok, Shopee, Zalo, Google Ads, Amazon and scraping? A task-by-task chooser and how to test first.

HTTP vs SOCKS5 Proxy: Which One Do You Need?

HTTP vs SOCKS5 proxy explained: how each protocol works, speed, security, UDP support and which one your browser, antidetect browser or tool actually needs.

What Is a Rotating Proxy, and When Do You Need One?

What is a rotating proxy? How IP rotation works, rotating vs static proxies compared, and why a static dedicated IP is usually safer for account work.

How to Check a Proxy Before You Use It

How to check a proxy step by step: confirm it connects, verify the IP and country, test speed with curl or an online checker, and fix 407 and timeout errors.

Proxy vs VPN: how they differ and when to use each

Proxy vs VPN: what is the difference? Compared on scope, encryption, DNS and how many IPs you can run at once, with a table, when to use each and an IP check.

Static or rotating proxy: choose by the job

Static vs rotating proxies compared task by task: account farming, ads, e-commerce shops, scraping, SEO checks. Pros and cons, sticky sessions and DIY rotation.

Static IP vs dynamic IP: what is the difference?

A static IP is a fixed address; a dynamic IP is reassigned by your provider over time. Compare the two, see which one you have and how to get a static IP.

How to Choose a Reliable Proxy Provider

How to choose a reliable proxy provider: verify truly dedicated IPs, buy a small test batch, read the refund policy, test support and check pricing before scaling.

Cheap Proxies: When They Work and When They Cost You More

Are cheap proxies worth buying? Why some proxies are cheap (shared IPs, dirty IPs, overselling), when cheap is good enough, and how to save money safely.

How Proxy Pricing Works

How proxy pricing works: per IP per month, per GB of traffic and per port explained, plus what drives price, volume discounts and how to estimate your monthly cost.

Private vs Shared Proxy: What Is the Difference?

Private vs shared proxy explained: speed, IP reputation, account linking risk and cost compared, plus when you really need a dedicated proxy instead of a shared one.

Dedicated Proxy vs VPS: Which Is the Better Deal?

Dedicated proxy vs a self-hosted proxy on a VPS: cost when you need many IPs, IP cleanliness, setup effort, security and when building your own actually makes sense.

How Many Proxies Do I Need?

How many proxies do you need? Simple formulas for counting IPs by number of accounts, scraping threads and team size, with worked examples and a sensible buffer.

Proxy Provider Red Flags and How to Spot Them

Proxy provider red flags: duplicate IPs, wrong countries, no refund policy, lifetime or ban-proof promises and missing support, with simple ways to check each sign.

What Is a Clean Proxy and How Do You Check One?

What a clean proxy means and how to check one: blocklists, ASN and owning organisation, location, signs of past abuse, plus a curl command and a step-by-step checklist.

Lifetime Proxies: Do They Really Exist?

Are lifetime proxies real? Why pay-once, use-forever proxies rarely last: recurring IP costs, hidden conditions, and how monthly rental with renewal keeps your IP.

How to Renew a Proxy and Keep the Same IP

How to renew a proxy and keep the same IP: renew early, renew only some proxies, what happens at expiry, auto-renewal caveats and simple ways to never miss a date.

What Is a Static Proxy and Who Actually Needs One?

A static proxy keeps the same IP address for the whole rental period. Learn how it differs from dynamic IPs and rotating proxies, its pros and cons, and who needs one.

What Is a Residential Proxy, and Do You Really Need One?

A residential proxy routes traffic through real home connections and usually rotates IPs. Learn how it works, the risks, how it differs from static ISP proxies.

What Is a Datacenter Proxy and What Is It Good For?

A datacenter proxy uses a hosting company IP on a server: fast, stable and cheap per IP. Learn the pros and cons, dedicated vs shared, and what it is good for.

What Is an ISP Proxy and Who Should Use One?

An ISP proxy uses an IP registered to a consumer internet provider, hosted on a server and kept fixed. Learn where the IPs come from, pros, limits and who needs one.

What Is a Private Proxy and How Do You Verify It?

A private proxy is an IP assigned to one customer only. Learn what private really means, how it differs from shared proxies, and how to check your IP is truly yours.

What Is a 4G Mobile Proxy and Is It Right for You?

A 4G mobile proxy routes traffic through a SIM-based modem on a cellular network. Learn how it works, its trade-offs, when it fits, and a steadier alternative.

The ip:port:user:pass Proxy Format: Read, Convert, Enter Correctly

What the ip:port:user:pass proxy format means, how it maps to user:pass@ip:port and http:// URLs, how to convert lists in bulk and fix common input errors.

Username/Password vs IP Whitelist Proxy Authentication

Compare the two ways to authenticate a proxy: username and password or IP whitelisting. How each works, pros and cons, when to use which, and keeping credentials safe.

Forward Proxy vs Reverse Proxy: Differences and Use Cases

A reverse proxy sits in front of web servers and answers for them (nginx, HAProxy). Learn how it differs from a forward proxy, with a config example and use cases.

Proxy Anonymity Levels Explained, and How to Test Yours

What an anonymous proxy is, how transparent, anonymous and elite proxies differ, what X-Forwarded-For and Via reveal, and how to test your own proxy step by step.

What Is an ASN and Why It Matters for Proxies

An ASN identifies the network an IP address belongs to, such as a telecom or a hosting company. Learn why websites check ASNs and how to look up the ASN of any IP.

What Is an IPv4 Address and Why It Still Matters

An IPv4 address is a 32-bit number written as four values from 0 to 255. Learn how IPv4 is structured, how subnets work, why it ran out and what it means for proxies.

Public IP vs Private IP Explained

A public IP is what websites see; a private IP only works inside your local network. Learn how NAT and CGNAT connect them and how to find both on any device.

How Websites Detect Proxies

Websites detect proxies through ASN, blacklists, latency, headers, WebRTC, DNS and time zone. Learn each signal and how to configure a proxy setup that stays consistent.

Blacklisted IP: Causes, Checks and Fixes

A blacklisted IP appears on lists of addresses linked to spam, attacks or fraud. Learn the main list types, how to check an IP or proxy, and what to do in each case.

Why IP Geolocation Shows the Wrong Location

IP location is often wrong because geolocation is an estimate from databases, not GPS. Learn how geo databases work, why they drift and what to do when location is off.

What Is a DNS Leak and How to Fix It with a Proxy

A DNS leak happens when domain lookups go through your own provider instead of the proxy side. Learn how to test for DNS leaks, read results correctly and fix them.

What Is a WebRTC Leak and How to Stop It

A WebRTC leak exposes your real IP even when you use a proxy. Learn how to test for it and how to stop it in Chrome, Edge, Firefox and antidetect browsers, step by step.

IP Subnets (/24) and Running Multiple Accounts

A /24 subnet is a block of 256 neighbouring IPs. Learn why accounts on the same subnet can be linked, how to check your proxy list and allocate IPs sensibly.

Vietnam IP Addresses and Vietnam Proxies

Vietnamese IPs are allocated through VNNIC to telecoms and data centres. Learn how ISP and datacenter IPs differ in Vietnam and when you actually need a Vietnam proxy.

Facebook Checkpoint and Proxies: How Much Is the IP to Blame?

Why does Facebook checkpoint accounts behind a proxy? What role the IP plays, the other signals Facebook checks, and a checklist to lower checkpoint risk.

Warming Up Facebook Accounts with a Proxy: IP, Profile, Behavior

A safe process for warming up Facebook accounts with a proxy: fixed IPs, antidetect profiles that match the IP, a week-by-week activity plan and common mistakes.

Proxies for Facebook Business Manager: Running BM as a Team

How to use proxies with Facebook Business Manager: a fixed IP for each admin, role-based access instead of shared logins, and a setup process for team members.

Facebook Ad Account Disabled: Common Causes and How to Prevent Them

Why Facebook ad accounts get disabled, how much the IP really matters, how to appeal properly, and a prevention checklist for managing ads through a proxy.

How Many Facebook Accounts per IP: Why the Answer Is One

How many Facebook accounts can share one IP? Why one account per IP is the safe default, the risks of sharing, sensible exceptions and how to count the IPs you need.

Facebook Login from a New Location: Keep IP and Device Consistent

Facebook flags logins from a new location when the IP, device or country changes. How to respond, and how to keep IP and device consistent when using a proxy.

Managing Multiple Instagram Accounts: Separate IP, Device and App

How to manage multiple Instagram accounts safely: when the built-in account switcher is enough, when to separate IPs and devices, and proxy setup on desktop and phone.

Proxies for Facebook Marketplace: Right Country IP, Right Location Setting

When does a proxy help on Facebook Marketplace? How Marketplace decides your area, what the IP does, setting up several seller accounts and what a proxy cannot do.

Securing a Facebook Account Behind a Proxy: 2FA, Recovery and IPs

Keep a Facebook account safe when using a proxy: set up 2FA properly, store recovery codes, keep recovery email and phone current, and avoid lockouts when the IP changes.

Viewing Competitor Facebook Ads by Country: Ad Library and IPs

How to see competitors' Facebook ads by country in the Meta Ad Library, when you need a local IP to view their landing pages, and a simple research workflow.

Managing Multiple TikTok Shops: IPs, Profiles and Staff

How to run several TikTok Shops cleanly: one static IP per shop, one browser profile per shop, clear staff permissions, and staying inside TikTok Shop policy.

Warming Up a TikTok Account: Static IP, Content and Cadence

Warm up a new TikTok account the durable way: one static IP per account, a proxy set up correctly on the phone, original content and a steady posting rhythm.

Running a US TikTok Account from Vietnam

Running a US TikTok account from Vietnam takes a static US IP, device settings that consistently match the US, and staying within TikTok's rules. Steps and limits.

Multiple Shopee Shops on One IP: Rules, Risks and Separation

What happens when several Shopee shops share one IP, what Shopee's rules say about multiple shops, and how to separate IP, device and details to limit linking.

Proxies for Shopee Affiliate: When You Need One and When You Don't

Do Shopee Affiliate marketers need a proxy? The cases where a proxy genuinely helps, the cases where it does not, and the banned practices no proxy can hide.

Managing Multiple Lazada Seller Accounts by Store and Country

How to manage several Lazada seller accounts across stores and countries: pick IPs by market, separate browser profiles, set staff permissions and follow policy.

Proxies for Amazon Sellers: Stable IPs, US ISP and Their Limits

Should Amazon sellers based in Vietnam use a proxy? The role of a stable IP, when a US ISP proxy helps, and what a proxy cannot fix in account verification.

Opening an Etsy Shop from Vietnam: IP, Payments and Policy

What it takes to open an Etsy shop from Vietnam: genuine, consistent details, a supported payout method, a stable login IP and the Etsy policies to read first.

Proxies for Dropshipping: Where They Help and Which Type to Use

How proxies help dropshippers: research products and ads by country, check your store as foreign shoppers see it, keep admin logins stable and track prices.

Competitor Price Monitoring with Proxies: Frequency, IPs and Ethics

How to monitor competitor prices on e-commerce marketplaces with proxies: pick a sensible frequency, size your IP pool, configure your code and stay ethical.

Managing Multiple Zalo Accounts: Vietnam IP, Device and Phone Number

How to run several Zalo accounts more safely: one phone number, one login environment and one fixed Vietnam IP per account, plus a warm-up plan and common mistakes.

Zalo Won't Log In Through a Proxy: Find the Cause Step by Step

Zalo PC or Zalo Web won't log in with a proxy? Check in order: proxy alive, credentials, Proxifier rules, firewall, system clock and phone verification.

Managing Zalo OA for Multiple Brands: Permissions, Profiles and IPs

How to manage several Zalo Official Accounts for different brands or clients: who owns the OA, staff permissions, separate login profiles and fixed Vietnam IPs.

Managing Multiple Telegram Accounts: HTTP Proxies on Telegram Desktop and the Risks

Run several Telegram accounts separately: one phone number, one Telegram Desktop instance and one fixed HTTP proxy per account, plus the risks a proxy won't fix.

Telegram Proxies Explained: MTProto, SOCKS5 and HTTP

Telegram supports MTProto, SOCKS5 and HTTP proxies. How each works, where it is available, pros and cons, and how to use an HTTP proxy from VinaProxy on Desktop.

Proxies for Gmail: Creating and Managing Several Legitimate Accounts

What a proxy can and cannot do when creating Gmail accounts: phone verification, the role of the IP, Google's limits and how to manage several legitimate accounts.

Google Account Verification: Why You Are Asked and What Your IP Has to Do With It

Why Google asks you to verify your account at sign-in, what part your IP plays, when a proxy makes it better or worse, and how to reduce verification prompts.

Managing Multiple YouTube Channels: Brand Accounts, Team Roles and IPs

How to manage several YouTube channels cleanly: Brand Accounts, team permissions in YouTube Studio, and when each channel or team member needs a fixed IP.

Managing Multiple Google Ads Accounts: MCC, Policy and a Stable IP

How to run several Google Ads accounts within policy: a manager (MCC) account, role-based access, advertiser verification and a stable sign-in IP for your team.

Viewing Google Results by Country: Proxies, gl, hl and Language

How to see Google results as users in the US, Japan, Korea, Singapore and elsewhere: a proxy in the right country plus the gl and hl parameters, minus personalisation.

What Is an Antidetect Browser and How Does It Work?

What an antidetect browser is, how profiles and fingerprints work, how it differs from incognito or a VPN, and why each profile needs its own static proxy.

What Is a Browser Fingerprint and How Does It Relate to Proxies?

What a browser fingerprint is, how canvas, WebGL, fonts and time zone identify a device, how websites use it, and why changing your IP alone is not enough.

Matching Time Zone, Language and Location to Your Proxy

Make browser time zone, language and geolocation match your proxy IP: values for 7 countries, how to set them in antidetect browsers and Chrome, common mismatches.

Multi-Account Setup Checklist: What to Check Before You Run

A complete multi-account management checklist: platform rules, account details, antidetect profiles, dedicated proxies, cookies, behaviour and record keeping.

How to Choose an Antidetect Browser

Choosing between GenLogin, GoLogin, AdsPower, Hidemyacc and other antidetect browsers: the criteria that matter, a one-week trial plan and how to pair them with proxies.

Should You Rotate or Keep the IP for Your Accounts?

Should you change or keep the IP for social, shop and ad accounts? When a static IP is better, when rotation makes sense, and how to switch IPs safely if you must.

Sharing Proxies With a Team: Assign, Manage and Revoke

Share proxies with a team safely: assign IPs per account, hide proxy credentials behind antidetect profiles, keep a register, renew on time and revoke access cleanly.

What Is MMO and How Do Proxies Help Beginners?

What MMO (make money online) means, which online business models are legitimate, when beginners actually need a proxy, which type to start with and scams to avoid.

Proxies for Airdrops: Sybil Risk, Project Rules and Responsible Use

Can you use a proxy for airdrops and testnets? What sybil means, how projects filter wallets, the rules to read first, legitimate proxy uses and wallet security tips.

Cookies and Login Sessions When You Run Multiple Accounts

How to manage cookies, login sessions and profiles across multiple accounts without mixing data: Chrome profiles, Firefox containers, antidetect browsers and safe habits.

How to Rotate a List of Static Proxies in Python

Rotate your own list of static proxies in Python requests: parse ip:port:user:pass, round-robin, sticky sessions, retries and cooldowns, with sample code.

Web Scraping Rate Limits: How Fast Is Too Fast

Web scraping rate limits explained: what sites count, reading robots.txt, pacing and backoff in code, and how to work out how many IPs your job needs.

HTTP 429 Too Many Requests: Why It Happens and How to Fix It

What HTTP 429 Too Many Requests means, why it appears with proxies and tools, how to read Retry-After, write backoff and redistribute IPs to stop it.

Proxies and CAPTCHA: Why They Appear and What to Do

Why proxies trigger CAPTCHAs: IP reputation, shared IPs, request pace, browser fingerprint. Legitimate ways to see fewer, without bypassing CAPTCHAs unlawfully.

Scrapy vs Playwright: Pick the Right Tool for Each Kind of Page

Scrapy or Playwright for scraping? Static HTML vs JavaScript-rendered pages, speed and resource use, and how to configure proxies in each tool.

Headless Browser Detection: What Sites See and How to Configure Sensibly

Why sites detect headless browsers: navigator.webdriver, User-Agent, viewport, WebGL, timezone vs IP mismatch, behaviour. Sensible Playwright and Puppeteer setup.

Scraping Google SERPs for Rank Tracking: Doing It Sensibly

Tracking Google rankings without trouble: the terms to know, sensible check frequency, choosing a country via proxy, hl and gl parameters, and official API options.

Proxy Pool Management: From a List of IPs to a Stable System

How to manage a proxy pool for scraping and tools: an IP inventory, periodic health checks, allocation by task, a retry policy, logging and tracking renewals.

How to Test Proxy Speed: Measuring Latency and Throughput

Test proxy speed the right way: measure latency, time to first byte and throughput with curl and Python, read the results, and see how location affects them.

http_proxy, https_proxy and no_proxy: Setup on Linux, Windows and Docker

How to set http_proxy, https_proxy and no_proxy on Linux, Windows and Docker: correct syntax, upper vs lower case, making it permanent, and common mistakes.

Why your proxy is slow and how to fix it

A slow proxy usually comes from distance, your own network, too many threads or the target site throttling you. Learn how to measure and fix each cause.

Proxy works in the browser but not in the app: causes and fixes

Your proxy works in the browser but a desktop app or game ignores it? Learn why apps skip system proxy settings and how to force them through with Proxifier.

Proxy showing the wrong country: real fault or geo data error?

Your proxy shows the wrong country? Tell a geolocation database error from a setup leak, cross-check several sources and know when to contact support.

Proxy connected but no internet: check setup, authentication and DNS

Proxy on but no internet? Work through a checklist for configuration, the ip:port:user:pass format, authentication, DNS and firewalls to find what is broken.

SSL certificate errors with a proxy: check time, software and configuration

Getting SSL certificate errors or a connection is not private warning with a proxy? Check system time, HTTPS scanning software and proxy settings in code.

Windows 10 and 11 proxy settings keep resetting: causes and fixes

Windows 10 or 11 proxy settings turning off or changing after a restart? Find the VPN, app, policy or malware overwriting them and keep your setup stable.

When a website blocks your proxy: understand why and respond properly

A website blocks your proxy, denies access or keeps showing CAPTCHAs? Learn why sites block proxies, when to switch IP type and how to lower request rates.

Checking if proxies are alive in bulk: from web tools to scripts

Check whether proxies are alive in bulk with a web checker, a curl loop or a parallel Python script, then read the results and handle dead proxies properly.

Testing proxies before buying in bulk: a small-batch process with clear criteria

A process for testing proxies before buying in bulk: buy a small batch, measure speed, location, IP reputation and real platform behaviour, then scale up.

Change your computer's IP to another country: proxy or VPN, step by step

Change your computer's IP to another country with a proxy or a VPN: when to use each, setup on Windows, macOS and browsers, and how to confirm the new country.

Using a Proxy with MT5: When It Helps, the Risks, and Broker Rules

Should you run MT5 through a proxy? When it helps, when it causes trouble with your broker or prop firm, how to set it up, and a checklist before trading.

Checking Local SEO in Vietnam from Abroad Without Personalised Results

Check Vietnamese local SEO rankings accurately from overseas: remove personalisation, use a fixed Vietnam IP, read the map pack and log rankings consistently.

Ad Verification with Proxies: Is Your Ad Showing the Right Page in the Right Country?

How to verify ads with proxies: confirm ads and landing pages appear correctly in each country, redirects keep tracking parameters, and prices match the market.

Comparing Flight and Hotel Prices by Country, Fairly

Flight and hotel prices can differ by the country you browse from. How to compare travel prices by country fairly with proxies, and the rules to respect.

Researching Foreign Markets: See Products, Ads and Prices Like a Local

Research foreign markets from Vietnam: see products, ads, prices and search results the way local buyers do, using fixed proxies and a simple research log.

Proxies for Affiliate Marketing: Link Checks, Geo Landing Pages and Compliance

Use proxies for affiliate marketing to test links, redirects and offers in each country before buying traffic. A checking routine, curl command and hard limits.

Viewing the App Store and Google Play by Country: Rankings, Prices and Availability

How to view the App Store and Google Play by country to compare rankings, app prices and availability. When a proxy helps, when a URL change is enough, and limits.

Accessing Vietnamese Websites from Abroad with a Fixed Vietnam IP

Living overseas and Vietnamese sites block you or keep asking for verification? Use a fixed Vietnam proxy, route only .vn sites through it, and stay safe.

Social Listening by Market: Tracking Public Conversations the Right Way

Social listening means tracking public conversations about your brand, products and rivals. How to do it market by market, when proxies help, and the data limits.

Proxy Glossary A-Z: The Terms You Will Actually Meet

A plain-English proxy glossary: proxy types, protocols, authentication, IP and ASN basics, WebRTC leaks, 407 and 502 errors, and terms you meet when buying proxies.

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