Every request you send is signed with your address, and it tells sites more than you'd expect. Here's the full kitchen: what a site sees within milliseconds, how proxies and VPNs actually work, how the four address types differ — and why masking usually leaks where nobody thought to look.
Every request you send on the internet is signed with your address — otherwise the response would have nowhere to return. From that address alone, a site learns your country, city, provider and even connection type within milliseconds: home broadband, mobile network or a data-center server. For a trader this is no abstraction: your IP is seen by your broker, by payment antifraud and by every platform you work with. Let's walk the whole chain — how an IP address works, what proxies and VPNs actually do, how the four proxy types differ, and why masking usually leaks in places nobody thought to check.
You can't simply hide your IP — it sits in the header of every packet; that's the foundation of the protocol. But it reveals a surprising amount. Addresses are issued in blocks to autonomous systems (ASN): your home ISP has its ranges, a hosting company like Hetzner has its own. Commercial geo-databases — MaxMind, IP2Location, IPinfo — map every range to a country, city and network type, and almost any site checks them on your very first request.
Then there's NAT. There aren't enough addresses to go around, so ISPs hide dozens of subscribers behind one public IP, and mobile carriers hide entire neighborhoods (that's CGNAT). A side effect: mobile addresses almost never get banned — blocking one IP means cutting off thousands of people at once. Keep that fact in mind; we'll come back to it when we talk about proxy types.
And one more thing: reputation. Every address drags its history along — whether it sent spam, landed on Spamhaus blacklists, how many accounts were registered from it. Fraud-scoring services like Scamalytics rate an address from 0 to 100, and you inherit that score from the previous “tenant” even if you rented the server five minutes ago.
A proxy is an intermediary server: your request goes to it first, and the proxy then talks to the site on its own behalf. The site sees the proxy's address, its geo and its reputation — yours stay off camera. Two main protocols: an HTTP proxy operates at the level of web requests and can parse them; SOCKS5 sits a level lower and simply relays any traffic — from a browser to a trading terminal — without looking inside.
Just as important is what a proxy does not do: by itself it encrypts nothing. If HTTPS runs inside, the content is protected by HTTPS itself; if not, the proxy server sees your traffic in full. And your ISP still sees that you connected to the proxy's address — only the destination site is hidden.
All proxies do the same job, but their addresses come from different worlds — and sites tell them apart with ease. The rule is simple: the more residential the address, the more trust it gets and the more it costs.
Within each type there's a quality spread of its own: an address can be dedicated (yours alone) or shared with strangers, clean or carrying someone else's bans. A cheap residential pool that has already pushed a thousand bots works worse than an honest datacenter address — the type alone guarantees nothing.
Hence the practical question — not “which proxy is best”, but which one for which job:
The most common mistake is thinking that swapping the IP is the masking. Modern antifraud looks at the whole picture, and the picture has to add up. Meanwhile the leaks run through channels many people have never heard of.
WebRTC is the video-calling protocol built into every browser. To establish direct connections it can ask the operating system for its real addresses — bypassing the proxy. One JavaScript call is enough for a site to get your true IP while the proxy is on. A DNS leak works similarly: if the “what's the address of site.com” queries go to your home ISP's resolver, both the provider and your interest in the site stay exposed — and a service can identify your real network by the resolver your queries come from.
Then come the mismatches. The IP points to Amsterdam while the browser's time zone is UTC+3 and the system language is Russian. The claimed location is New York, but the ping to a New York server is 90 ms — impossible up close: you can't cheat the speed of light. That same physical fact, incidentally, is what latency arbitrage is built on. Each mismatch is minor on its own, but antifraud adds them all to one score.
First — stability. Broker antifraud loves consistency: logging in from home, then from a trip, then from a phone is a classic trigger for extra checks, up to freezing withdrawals “pending review”. A terminal running on a VPS with a permanent static address solves this by itself: the broker always sees the same connection profile.
Second — common sense about routes. An encrypted tunnel belongs on public Wi-Fi and on the road. But for trading itself every intermediary adds milliseconds to every order: the traffic takes an extra hop. For latency arbitrage that's a direct loss, so the field rule is simple: the terminal lives on a VPS next to the broker's server and goes online directly, while privacy tools serve the browser, banking and everything else.
In practice this settles into a simple scheme: the cabinet and the money go through one permanent residential address, the trading goes through the VPS. Split them once — and from then on everything always adds up for the broker:
Sign-up and verification run from a genuine user address — by definition cleaner than any cheap pool from public lists. You take this proxy once and pin it to the cabinet: it serves the personal account only, never the trading.
MT4/MT5 on the VPS connects to the trading server directly — minimal latency, and brokers are used to terminals connecting from server addresses. Better not to open the web cabinet from the VPS: its IP differs from the one you verified with.
The withdrawal request comes from the same “home” address where the cabinet has lived since day one. To antifraud, the account's whole history looks like one person in one place — exactly how it likes it.
Open browserleaks.com or whoer.net with and without the proxy. Compare: address, provider, geo, connection type. A hosting flag on a “residential” plan is a valid complaint to your seller.
Same page, the WebRTC Leak section. If your real IP glows next to the proxy address, you have a leak. It's fixed with browser settings or an extension — but recheck after every update.
dnsleaktest.com, the extended test. The resolver list must not contain your home ISP — only the proxy or VPN resolvers, or public ones.
The browser's time zone and language must fit the address's legend. An Amsterdam IP on Moscow time is the classic giveaway.
Run the IP through Scamalytics and the Spamhaus lists. A fraud score above 25–30 means the address had a life before you — ask for a replacement.
A proxy is an intermediary for a specific app, with no encryption of its own but flexible address management. A VPN is an encrypted tunnel for the whole system through one server. Proxies are about managing addresses, VPNs are about encrypting the channel.
In most jurisdictions the technology itself is perfectly legal — it's an ordinary networking tool, like a VPN. Questions arise not about the tool but about the actions: fake engagement, sanctions evasion or multi-accounting against a platform's rules remain violations regardless of how you connect.
An address with no bad history: not blacklisted, no spam sent from it, no piles of accounts registered through it, a fraud score near zero. Cleanliness beats type: a “dirty” residential address works worse than a clean datacenter one.
The ranges of commercial VPNs and hosting companies are well known and labeled in geo-databases — a site only needs to look them up. Plus the indirect signals: thousands of users on one address, a mismatched time zone, a familiar browser fingerprint.
Not for anything serious. A free proxy sees all of your unencrypted traffic, and its owner monetizes you: selling data, injecting ads, sometimes hijacking sessions. Addresses from public lists are also on every blacklist at once.
As a rule, no — and that's good news. A VPS already has its own static data-center address, brokers are fine with trading terminals connecting from servers, and a direct route with no intermediaries means minimal latency. A stable VPS address solves the main task — consistency — by itself.
Addresses, routes and latency are the same subject as choosing your VPS and broker: the stack arbitrage stands on. How to assemble it end to end — from the first server to the first trade — is laid out in the guide; the first chapters are open.